CNPS Rare Plant Inventory

1762 matches found. Click on scientific name for details

Search Criteria: , CRPR is one of [1B:2B]

Scientific Name	Common Name	Family	Lifeform	Blooming Period	Fed List	State List	Global Rank	State Rank	CA Rare Plant Rank	Other Status	Threats	General Habitats	Microhabitats	Lowest Elevation (m)	Highest Elevation (m)	Lowest Elevation (ft)	Highest Elevation (ft)	CA Endemic	Date Added	Photo
Ambrosia pumila	San Diego ambrosia	Asteraceae	perennial rhizomatous herb	Apr-Oct	FE	None	G1	S1	1B.1	SB_CRES	Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Development, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, ORV activity, Other, Over-collecting/poaching, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Coastal scrub, Valley and foothill grassland, Vernal pools	Alkaline (sometimes), Clay (sometimes), Disturbed areas (often), Loam (sometimes), Sandy (sometimes)	20	415	65	1360		1974-01-01	© 2010 Benjamin Smith
Spermolepis gigantea	desert scaleseed	Apiaceae	annual herb	Mar-Apr	None	None	G1	SH	2B.1			Sonoran desert scrub		400	400	1310	1310		1988-01-01	No Photo Available
Amsinckia grandiflora	large-flowered fiddleneck	Boraginaceae	annual herb	(Mar)Apr-May	FE	CE	G1	S1	1B.1	SB_UCBG	Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Non-native plant impacts, Other	Cismontane woodland, Valley and foothill grassland		270	550	885	1805	Yes	1974-01-01	© 2015 Zoya Akulova
Amsinckia lunaris	bent-flowered fiddleneck	Boraginaceae	annual herb	Mar-Jun	None	None	G3	S3	1B.2	BLM_S; SB_UCBG; SB_UCSC	Development, Erosion/runoff, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint.	Cismontane woodland, Coastal bluff scrub, Valley and foothill grassland		3	500	10	1640	Yes	1974-01-01	© 2011 Neal Kramer
Androsace filiformis	slender-stemmed androsace	Primulaceae	annual herb	Jun-Oct	None	None	G4	S1	2B.3		Grazing, Recreational use (non-ORV)	Meadows and seeps, Upper montane coniferous forest		1800	1830	5905	6005		1988-01-01	©2019 Belinda Lo
Androstephium breviflorum	small-flowered androstephium	Themidaceae	perennial bulbiferous herb	Mar-Apr	None	None	G5	S2?	2B.2		Development, Military operations, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Desert dunes, Mojavean desert scrub (bajadas)		220	800	720	2625		1974-01-01	© 2005 James M. Andre
Saltugilia latimeri	Latimer's woodland-gilia	Polemoniaceae	annual herb	Mar-Jun	None	None	G3	S3	1B.2	BLM_S; SB_CalBG/RSABG; SB_USDA; USFS_S	Development, Foot traffic/trampling, Grazing, Mining, Non-native animal impacts, ORV activity, Recreational use (non-ORV), Vandalism/dumping/litter	Chaparral, Mojavean desert scrub, Pinyon and juniper woodland	Granitic (often), Rocky (sometimes), Sandy (sometimes), Washes (sometimes)	400	1900	1310	6235	Yes	2004-01-01	No Photo Available
Sisyrinchium hitchcockii	Hitchcock's blue-eyed grass	Iridaceae	perennial rhizomatous herb	Jun	None	None	G1G2	S1	1B.1			Cismontane woodland (openings), Valley and foothill grassland		305	305	1000	1000		2004-01-01	©2009 Dana York
Prunus eremophila	Mojave Desert plum	Rosaceae	perennial deciduous shrub	Mar-Apr	None	None	G2	S2	1B.2	SB_CalBG/RSABG		Mojavean desert scrub	Granitic (sometimes), Washes (usually)	975	1175	3200	3855	Yes	2004-01-01	No Photo Available
Monardella stoneana	Jennifer's monardella	Lamiaceae	perennial herb	Jun-Sep	None	None	G1G2	S1	1B.2	BLM_S; SB_CRES	Altered flood/tidal/hydrologic regime, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Non-native plant impacts, Other, Road/trail construction/maint., Vandalism/dumping/litter	Chaparral, Closed-cone coniferous forest, Coastal scrub, Riparian scrub	Rocky (usually), Streambanks (often)	10	790	35	2590		2004-01-01	© 2010 Anna Bennett
Eriogonum spectabile	Barron's buckwheat	Polygonaceae	perennial evergreen shrub	Jul-Sep	None	None	G1	S1	1B.1	USFS_S	Insufficient population/stand size, Logging	Upper montane coniferous forest	Rocky (sometimes), Sandy (sometimes)	2010	2050	6595	6725	Yes	2004-01-01	No Photo Available
Eriogonum ovalifolium var. monarchense	Monarch buckwheat	Polygonaceae	perennial herb	Jun-Aug	None	None	G5T1	S1	1B.1	USFS_S	Insufficient population/stand size, Non-native plant impacts	Mojavean desert scrub, Pinyon and juniper woodland	Carbonate, Rocky (sometimes), Sandy (sometimes)	1800	1815	5905	5955	Yes	2004-01-01	No Photo Available
Taraxacum ceratophorum	horned dandelion	Asteraceae	annual herb	Jun-Jul(Aug)	None	None	G5	S1	2B.1			Alpine boulder and rock field, Meadows and seeps, Valley and foothill grassland (mesic)	Carbonate (sometimes)	2895	3610	9500	11845		2004-01-01	No Photo Available
Centromadia parryi ssp. parryi	pappose tarplant	Asteraceae	annual herb	May-Nov	None	None	G3T2	S2	1B.2	BLM_S	Agriculture, Development, Disking, Foot traffic/trampling, Grazing, Landfill, Non-native plant impacts, Other, Road/trail construction/maint.	Chaparral, Coastal prairie, Marshes and swamps (coastal salt), Meadows and seeps, Valley and foothill grassland (vernally mesic)	Alkaline (often)	0	420	0	1380	Yes	2004-01-01	© 2016 John Doyen
Eleocharis torticulmis	California twisted spikerush	Cyperaceae	perennial rhizomatous herb	Jun-Jul	None	None	G1	S1	1B.3	USFS_S	Foot traffic/trampling	Bogs and fens, Lower montane coniferous forest, Meadows and seeps		1005	1175	3295	3855	Yes	2004-01-01	No Photo Available
Fritillaria gentneri	Gentner's fritillary	Liliaceae	perennial bulbiferous herb	Apr-May	FE	None	G2	S1	1B.1			Chaparral, Cismontane woodland, Lower montane coniferous forest	Serpentine (sometimes)	1005	2970	3295	9745		2004-01-01	© 2013 Scot Loring
Arctostaphylos catalinae	Santa Catalina Island manzanita	Ericaceae	perennial evergreen shrub	(Feb)Mar-Apr(May)	None	None	G2?	S2?	1B.2	IUCN_VU; SB_CalBG/RSABG	Grazing, Non-native animal impacts	Chaparral (volcanic)		75	600	245	1970	Yes	1974-01-01	© 2020 Zoya Akulova
Arctostaphylos confertiflora	Santa Rosa Island manzanita	Ericaceae	perennial evergreen shrub	Feb-Apr	FE	None	G2	S2	1B.2	SB_CalBG/RSABG; SB_SBBG; SB_USDA	Erosion/runoff	Broadleafed upland forest, Chaparral, Closed-cone coniferous forest	Rocky, Sandstone	40	500	130	1640	Yes	1974-01-01	© 2006 Steve Matson
Arctostaphylos cruzensis	Arroyo de la Cruz manzanita	Ericaceae	perennial evergreen shrub	Dec-Mar	None	None	G1G2	S1S2	1B.2	BLM_S; SB_SBBG; USFS_S	Foot traffic/trampling, Grazing, Other, Wood cutting or brush clearing	Broadleafed upland forest, Chaparral, Closed-cone coniferous forest, Coastal bluff scrub, Coastal scrub, Valley and foothill grassland	Sandy	60	310	195	1015	Yes	1974-01-01	© 2006 Steve Matson
Arctostaphylos densiflora	Vine Hill manzanita	Ericaceae	perennial evergreen shrub	Feb-Apr	None	CE	G1	S1	1B.1	SB_CalBG/RSABG; SB_UCBG	Agriculture, Disease, Road/trail construction/maint.	Chaparral (acid marine sand)		50	120	165	395	Yes	1974-01-01	© 2006 Steve Matson
Arctostaphylos edmundsii	Little Sur manzanita	Ericaceae	perennial evergreen shrub	(May)Nov-Apr	None	None	G2	S2	1B.2	SB_UCSC; USFS_S	Erosion/runoff, Foot traffic/trampling, Non-native plant impacts, Road/trail construction/maint.	Chaparral, Coastal bluff scrub	Sandy	10	105	35	345	Yes	1974-01-01	© 2006 Steve Matson
Arctostaphylos glutinosa	Schreiber's manzanita	Ericaceae	perennial evergreen shrub	Mar-Apr(Nov)	None	None	G1	S1	1B.2	SB_CalBG/RSABG; SB_UCSC; SB_USDA	Development, Logging, Road/trail construction/maint.	Chaparral, Closed-cone coniferous forest		170	685	560	2245	Yes	1974-01-01	© 2011 Neal Kramer
Arctostaphylos morroensis	Morro manzanita	Ericaceae	perennial evergreen shrub	Dec-Mar	FT	None	G1	S1	1B.1	SB_UCSC	Development, Non-native plant impacts, ORV activity, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral (maritime), Cismontane woodland, Coastal dunes (pre-Flandrian), Coastal scrub		5	205	15	675	Yes	1974-01-01	© 2012 Jean Pawek
Arctostaphylos myrtifolia	Ione manzanita	Ericaceae	perennial evergreen shrub	Nov-Mar	FT	None	G1	S1	1B.2	SB_UCBG	Agriculture, Development, Disease, Grazing, Mining, ORV activity, Road/trail construction/maint., Vandalism/dumping/litter	Chaparral, Cismontane woodland	Acidic, Clay (sometimes), Sandy (sometimes)	60	580	195	1905	Yes	1974-01-01	© 2006 Steve Matson
Arctostaphylos nissenana	Nissenan manzanita	Ericaceae	perennial evergreen shrub	Feb-Mar	None	None	G1	S1	1B.2	BLM_S; USFS_S	Agriculture, Biocides, Development, Disease, Improper burning regime, Logging, ORV activity, Other, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Closed-cone coniferous forest	Rocky	450	1100	1475	3610	Yes	1974-01-01	No Photo Available
Arctostaphylos otayensis	Otay manzanita	Ericaceae	perennial evergreen shrub	Jan-Apr	None	None	G1	S1	1B.2	BLM_S; SB_CalBG/RSABG; SB_CRES	Altered flood/tidal/hydrologic regime, Development, Foot traffic/trampling, Improper burning regime, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral, Cismontane woodland		275	1700	900	5580	Yes	1974-01-01	No Photo Available
Arctostaphylos pajaroensis	Pajaro manzanita	Ericaceae	perennial evergreen shrub	Dec-Mar	None	None	G1	S1	1B.1	BLM_S; SB_UCSC	Agriculture, Development, Disease, Improper burning regime, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral (sandy)		30	760	100	2495	Yes	1974-01-01	No Photo Available
Arctostaphylos pallida	pallid manzanita	Ericaceae	perennial evergreen shrub	Dec-Mar	FT	CE	G1	S1	1B.1	SB_CalBG/RSABG	Biocides, Development, Disease, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Broadleafed upland forest, Chaparral, Cismontane woodland, Closed-cone coniferous forest, Coastal scrub	Gravelly (sometimes), Sandy (sometimes)	185	465	605	1525	Yes	1974-01-01	No Photo Available
Arctostaphylos pechoensis	Pecho manzanita	Ericaceae	perennial evergreen shrub	Nov-Mar	None	None	G2	S2	1B.2	BLM_S; SB_CalBG/RSABG		Chaparral, Closed-cone coniferous forest, Coastal scrub		125	850	410	2790	Yes	1974-01-01	No Photo Available
Arctostaphylos pilosula	Santa Margarita manzanita	Ericaceae	perennial evergreen shrub	Dec-May	None	None	G2?	S2?	1B.2	BLM_S; SB_SBBG; USFS_S	Agriculture, Dam/Inundation, Development, Erosion/runoff, Grazing, Hybridization, Improper burning regime, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Wood cutting or brush clearing	Broadleafed upland forest, Chaparral, Cismontane woodland, Closed-cone coniferous forest	Sandstone (sometimes)	75	1100	245	3610	Yes	1974-01-01	No Photo Available
Arctostaphylos pumila	sandmat manzanita	Ericaceae	perennial evergreen shrub	Feb-May	None	None	G1	S1	1B.2	BLM_S; SB_SBBG	Biocides, Development, Disease, Non-native plant impacts, ORV activity, Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral (maritime), Cismontane woodland, Closed-cone coniferous forest, Coastal dunes, Coastal scrub	Openings, Sandy	3	205	10	675	Yes	1974-01-01	No Photo Available
Arctostaphylos manzanita ssp. laevigata	Contra Costa manzanita	Ericaceae	perennial evergreen shrub	Jan-Mar(Apr)	None	None	G5T2	S2	1B.2	SB_UCSC	Biocides, Improper burning regime, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Chaparral (rocky)		430	1100	1410	3610	Yes	1984-01-01	© 2019 Susan McDougall
Arctostaphylos purissima	La Purisima manzanita	Ericaceae	perennial evergreen shrub	Nov-May	None	None	G2	S2	1B.1	SB_CalBG/RSABG; SB_USDA	Development, Foot traffic/trampling, Grazing, Improper burning regime, Landfill, Military operations, Non-native plant impacts, Other, Road/trail construction/maint.	Chaparral (sandy), Coastal scrub		60	390	195	1280	Yes	1988-01-01	No Photo Available
Arctostaphylos refugioensis	Refugio manzanita	Ericaceae	perennial evergreen shrub	(May)Dec-Mar	None	None	G3	S3	1B.2	SB_SBBG; USFS_S	Development, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral (sandstone)		274	820	900	2690	Yes	1974-01-01	No Photo Available
Arctostaphylos rudis	sand mesa manzanita	Ericaceae	perennial evergreen shrub	Nov-Feb	None	None	G2	S2	1B.1	BLM_S; SB_SBBG	Agriculture, Development, Disking, Grazing, Improper burning regime, Non-native plant impacts, Other, Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral (maritime), Coastal scrub	Sandy	25	322	80	1055	Yes	1980-01-01	No Photo Available
Arctostaphylos silvicola	Bonny Doon manzanita	Ericaceae	perennial evergreen shrub	Jan-Mar	None	None	G1	S1	1B.2	SB_CalBG/RSABG	Development, Erosion/runoff, Improper burning regime, Logging, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral, Closed-cone coniferous forest, Lower montane coniferous forest		120	600	395	1970	Yes	1974-01-01	No Photo Available
Arctostaphylos stanfordiana ssp. raichei	Raiche's manzanita	Ericaceae	perennial evergreen shrub	Feb-Apr	None	None	G3T2	S2	1B.1	BLM_S; SB_CalBG/RSABG; SB_USDA	Mining, ORV activity, Road/trail construction/maint.	Chaparral, Lower montane coniferous forest (openings)	Rocky, Serpentine (often)	450	1035	1475	3395	Yes	1988-01-01	No Photo Available
Calochortus longebarbatus var. longebarbatus	long-haired star-tulip	Liliaceae	perennial bulbiferous herb	Jun-Aug(Sep)	None	None	G4T3	S3	1B.2	BLM_S; SB_BerrySB; USFS_S	Erosion/runoff, Foot traffic/trampling, Grazing, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion	Great Basin scrub, Lower montane coniferous forest (openings, drainages), Meadows and seeps, Vernal pools	Clay, Mesic	1005	1900	3295	6235		1974-01-01	©2020 John Doyen
Calochortus obispoensis	San Luis mariposa-lily	Liliaceae	perennial bulbiferous herb	May-Jul	None	None	G2	S2	1B.2	BLM_S; SB_CalBG/RSABG; SB_SBBG; USFS_S	Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Cismontane woodland, Coastal scrub, Valley and foothill grassland	Serpentine (often)	50	730	165	2395	Yes	1974-01-01	No Photo Available
Calochortus palmeri var. munzii	San Jacinto mariposa-lily	Liliaceae	perennial bulbiferous herb	Apr-Jul	None	None	G3T3	S3	1B.2	BLM_S; SB_CalBG/RSABG; USFS_S	Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Lower montane coniferous forest, Meadows and seeps		855	2200	2805	7220	Yes	1974-01-01	No Photo Available
Calochortus persistens	Siskiyou mariposa-lily	Liliaceae	perennial bulbiferous herb	Jun-Jul	None	CR	G2	S2	1B.2	BLM_S; SB_BerrySB; USFS_S	Foot traffic/trampling, Improper burning regime, Logging, Mining, Non-native animal impacts, Non-native plant impacts, ORV activity, Other, Over-collecting/poaching, Road/trail construction/maint.	Lower montane coniferous forest, North Coast coniferous forest	Acidic, Rocky	1000	1860	3280	6105		1974-01-01	©2014 Scot Loring
Calochortus pulchellus	Mt. Diablo fairy-lantern	Liliaceae	perennial bulbiferous herb	Apr-Jun	None	None	G2	S2	1B.2	SB_CalBG/RSABG	Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Insufficient population/stand size, Non-native plant impacts, Other, Over-collecting/poaching, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Cismontane woodland, Riparian woodland, Valley and foothill grassland		30	840	100	2755	Yes	1974-01-01	No Photo Available
Calochortus raichei	Cedars fairy-lantern	Liliaceae	perennial bulbiferous herb	May-Aug	None	None	G2	S2	1B.2	BLM_S; SB_UCSC	Road/trail construction/maint.	Chaparral, Closed-cone coniferous forest	Serpentine	200	490	655	1610	Yes	1988-01-01	No Photo Available
Calochortus simulans	La Panza mariposa-lily	Liliaceae	perennial bulbiferous herb	Apr-Jun	None	None	G2	S2	1B.3	BLM_S; SB_CRES; SB_SBBG; USFS_S	Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Insufficient population/stand size, Mining, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Chaparral, Cismontane woodland, Lower montane coniferous forest, Valley and foothill grassland	Granitic (often), Sandy, Serpentine (sometimes)	325	1150	1065	3775	Yes	1980-01-01	© 2011 Aaron E. Sims
Calochortus striatus	alkali mariposa-lily	Liliaceae	perennial bulbiferous herb	Apr-Jun	None	None	G3	S2S3	1B.2	BLM_S; SB_CalBG/RSABG; USFS_S	Agriculture, Dam/Inundation, Development, Foot traffic/trampling, Grazing, Groundwater pumping, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Surface water diversion, Vandalism/dumping/litter	Chaparral, Chenopod scrub, Meadows and seeps, Mojavean desert scrub	Alkaline, Mesic	70	1595	230	5235		1974-01-01	No Photo Available
Calochortus tiburonensis	Tiburon mariposa-lily	Liliaceae	perennial bulbiferous herb	Mar-Jun	FT	CT	G1	S1	1B.1	SB_UCBG	Foot traffic/trampling, Non-native plant impacts	Valley and foothill grassland (serpentinite)		50	150	165	490	Yes	1974-01-01	No Photo Available
Calochortus westonii	Shirley Meadows star-tulip	Liliaceae	perennial bulbiferous herb	May-Jun	None	None	G3	S3	1B.2	BLM_S; SB_CalBG/RSABG; SB_UCSC; USFS_S	Development, Foot traffic/trampling, Grazing, Improper burning regime, Logging, ORV activity, Other, Over-collecting/poaching, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Broadleafed upland forest, Lower montane coniferous forest, Meadows and seeps	Granitic	1500	2105	4920	6905	Yes	1974-01-01	No Photo Available
Calycadenia hooveri	Hoover's calycadenia	Asteraceae	annual herb	Jul-Sep	None	None	G2	S2	1B.3	BLM_S	Agriculture, Development, Grazing, Road/trail construction/maint.	Cismontane woodland, Valley and foothill grassland	Rocky	65	300	215	985	Yes	1980-01-01	No Photo Available
Calyptridium parryi var. hesseae	Santa Cruz Mountains pussypaws	Montiaceae	annual herb	May-Aug	None	None	G3G4T2	S2	1B.1	BLM_S; SB_UCBG	Development, Non-native plant impacts, ORV activity, Other	Chaparral, Cismontane woodland	Gravelly (sometimes), Openings, Sandy (sometimes)	305	1530	1000	5020	Yes	1984-01-01	No Photo Available
Calyptridium pulchellum	Mariposa pussypaws	Montiaceae	annual herb	Apr-Aug	FT	None	G1	S1	1B.1		Biocides, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Cismontane woodland	Granitic, Gravelly (sometimes), Sandy (sometimes)	400	1100	1310	3610	Yes	1980-01-01	No Photo Available
Abies amabilis	Pacific silver fir	Pinaceae	perennial evergreen tree		None	None	G5	S2	2B.3	IUCN_LC	Improper burning regime, Other	Upper montane coniferous forest		1700	2195	5580	7200		1974-01-01	© 2021 Scot Loring
Abies bracteata	bristlecone fir	Pinaceae	perennial evergreen tree		None	None	G2G3	S2S3	1B.3	IUCN_NT; SB_CalBG/RSABG; USFS_S	Improper burning regime, Military operations, Other, Road/trail construction/maint., Surface water diversion, Wood cutting or brush clearing	Broadleafed upland forest, Chaparral, Lower montane coniferous forest, Riparian woodland	Rocky	183	1555	600	5100	Yes	1974-01-01	© 2019 Zoya Akulova
Abies lasiocarpa var. lasiocarpa	subalpine fir	Pinaceae	perennial evergreen tree		None	None	G5T5	S3	2B.3		Grazing	Meadows and seeps, Subalpine coniferous forest, Upper montane coniferous forest		945	2225	3100	7300		1974-01-01	©2021 Scot Loring
Abronia alpina	Ramshaw Meadows abronia	Nyctaginaceae	perennial herb	Jul-Aug	None	None	G2	S2	1B.1	USFS_S	Recreational use (non-ORV)	Meadows and seeps (granitic, gravelly margins)	Granitic, Gravelly, Sandy	2400	2700	7875	8860	Yes	1974-01-01	© 2004 James M. Andre
Abronia umbellata var. breviflora	pink sand-verbena	Nyctaginaceae	annual herb	Jun-Oct	None	None	G4G5T2	S2	1B.1	BLM_S; SB_CalBG/RSABG	Altered flood/tidal/hydrologic regime, Dam/Inundation, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Coastal dunes		0	10	0	35		1988-01-01	©2021 Scot Loring
Acanthomintha ilicifolia	San Diego thorn-mint	Lamiaceae	annual herb	Apr-Jun	FT	CE	G1	S1	1B.1	SB_CalBG/RSABG; SB_CRES	Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Mining, Non-native animal impacts, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Coastal scrub, Valley and foothill grassland, Vernal pools	Clay, Openings	10	960	35	3150		1974-01-01	© 2013 Keir Morse
Acanthomintha duttonii	San Mateo thorn-mint	Lamiaceae	annual herb	Apr-Jun	FE	CE	G1	S1	1B.1	SB_UCBG	Altered flood/tidal/hydrologic regime, Development, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Chaparral, Valley and foothill grassland	Serpentine	50	300	165	985	Yes	1974-01-01	© 2011 Aaron Schusteff
Adolphia californica	California adolphia	Rhamnaceae	perennial deciduous shrub	Dec-May	None	None	G3	S2	2B.1	SB_CalBG/RSABG; SB_CRES	Agriculture, Development, Grazing, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Coastal scrub, Valley and foothill grassland	Clay	10	740	35	2430		1974-01-01	© 2007 Andrew Borcher
Agave shawii var. shawii	Shaw's agave	Agavaceae	perennial leaf	Sep-May	None	None	G2G3T2T3	S1	2B.1	IUCN_EN; SB_CalBG/RSABG; SB_SBBG	Development, Erosion/runoff, Foot traffic/trampling, Military operations, Non-native plant impacts, Other, Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Coastal bluff scrub, Coastal scrub		3	120	10	395		1974-01-01	©2017 Keir Morse
Agrostis blasdalei	Blasdale's bent grass	Poaceae	perennial rhizomatous herb	May-Jul	None	None	G2G3	S2	1B.2	BLM_S; SB_UCSC	Agriculture, Altered flood/tidal/hydrologic regime, Development, Disease, Erosion/runoff, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint.	Coastal bluff scrub, Coastal dunes, Coastal prairie		0	150	0	490	Yes	1974-01-01	© 2001 Doreen L. Smith
Agrostis hooveri	Hoover's bent grass	Poaceae	perennial herb	Apr-Jul	None	None	G2	S2	1B.2	BLM_S; SB_SBBG; USFS_S	Development, Grazing, Mining, Non-native plant impacts, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Cismontane woodland, Closed-cone coniferous forest, Valley and foothill grassland	Sandy (usually)	6	610	20	2000	Yes	1974-01-01	2017 Adonis (Don) Tate
Agrostis humilis	mountain bent grass	Poaceae	perennial herb	Jul-Sep	None	None	G4Q	S2	2B.3		Foot traffic/trampling, Grazing, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter	Alpine boulder and rock field, Meadows and seeps, Subalpine coniferous forest	Carbonate (sometimes)	2670	3200	8760	10500		1980-01-01	© 2004 Steve Matson
Allium munzii	Munz's onion	Alliaceae	perennial bulbiferous herb	Mar-May	FE	CT	G1	S1	1B.1	SB_CalBG/RSABG	Agriculture, Development, Disking, Foot traffic/trampling, Grazing, Improper burning regime, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Cismontane woodland, Coastal scrub, Pinyon and juniper woodland, Valley and foothill grassland	Clay, Mesic	297	1070	975	3510	Yes	1980-01-01	© 2003 Guy Bruyea
Allium sharsmithiae	Sharsmith's onion	Alliaceae	perennial bulbiferous herb	Mar-May	None	None	G2	S2	1B.3	BLM_S	Feral pigs, Mining, Over-collecting/poaching, Road/trail construction/maint.	Chaparral, Cismontane woodland	Rocky, Serpentine	400	1200	1310	3935	Yes	1980-01-01	© 2017 John Doyen
Allium hickmanii	Hickman's onion	Alliaceae	perennial bulbiferous herb	Mar-May	None	None	G2	S2	1B.2	BLM_S; SB_SBBG; USFS_S	Development, Erosion/runoff, Foot traffic/trampling, Grazing, Military operations, Mining, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Chaparral (maritime), Closed-cone coniferous forest, Coastal prairie, Coastal scrub, Valley and foothill grassland		5	200	15	655	Yes	1974-01-01	© 2017 Dylan Neubauer
Allium howellii var. clokeyi	Mt. Pinos onion	Alliaceae	perennial bulbiferous herb	Apr-Jun	None	None	G3G4T2	S2	1B.3	SB_SBBG; USFS_S	Development, Grazing, ORV activity, Wood cutting or brush clearing	Great Basin scrub, Meadows and seeps (edges), Pinyon and juniper woodland		1300	1850	4265	6070	Yes	1974-01-01	© 2016 Keir Morse
Allium tuolumnense	Rawhide Hill onion	Alliaceae	perennial bulbiferous herb	Mar-May	None	None	G2	S2	1B.2	BLM_S	Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Mining, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Cismontane woodland (serpentinite)		300	600	985	1970	Yes	1980-01-01	© 2010 Steven Perry
Allium shevockii	Spanish Needle onion	Alliaceae	perennial bulbiferous herb	May-Jun	None	None	G2	S2	1B.3	BLM_S; SB_CalBG/RSABG	Development, Grazing, Other, Recreational use (non-ORV), Road/trail construction/maint.	Pinyon and juniper woodland, Upper montane coniferous forest	Rocky	850	2500	2790	8205	Yes	1988-01-01	© 2009 Aaron Schusteff
Allium tribracteatum	three-bracted onion	Alliaceae	perennial bulbiferous herb	Apr-Aug	None	None	G2	S2	1B.2	SB_SBBG; USFS_S	Development, Foot traffic/trampling, Grazing, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Lower montane coniferous forest, Upper montane coniferous forest	Volcanic	1100	3000	3610	9845	Yes	1988-01-01	© 2018 Sierra Pacific Industries
Allium yosemitense	Yosemite onion	Alliaceae	perennial bulbiferous herb	Apr-Jul	None	CR	G3	S3	1B.3		Erosion/runoff, Mining, Other, Recreational use (non-ORV), Road/trail construction/maint.	Broadleafed upland forest, Chaparral, Cismontane woodland, Lower montane coniferous forest	Granitic (sometimes), Metamorphic (sometimes), Rocky	535	2200	1755	7220	Yes	1974-01-01	© 2012 Lynn Robertson
Alopecurus aequalis var. sonomensis	Sonoma alopecurus	Poaceae	perennial herb	May-Jul	FE	None	G5T1	S1	1B.1	SB_CalBG/RSABG	Altered flood/tidal/hydrologic regime, Development, Foot traffic/trampling, Grazing, Non-native plant impacts, Other	Marshes and swamps (freshwater), Riparian scrub		5	365	15	1200	Yes	1974-01-01	© 2013 Vernon Smith
Ambrosia chenopodiifolia	San Diego bur-sage	Asteraceae	perennial shrub	Apr-Jun	None	None	G2G3	S1	2B.1	SB_CalBG/RSABG; SB_CRES	Agriculture, Development, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Coastal scrub		55	155	180	510		1974-01-01	© 2020 Keir Morse
Arctostaphylos hookeri ssp. hearstiorum	Hearsts' manzanita	Ericaceae	perennial evergreen shrub	Feb-Apr	None	CE	G3T2	S2?	1B.2		Foot traffic/trampling, Grazing, Hybridization	Chaparral (maritime), Coastal prairie, Coastal scrub, Valley and foothill grassland	Sandy	55	200	180	655	Yes	1974-01-01	© 2006 Steve Matson
Arctostaphylos hookeri ssp. hookeri	Hooker's manzanita	Ericaceae	perennial evergreen shrub	Jan-Jun	None	None	G3T2	S2	1B.2	BLM_S; SB_UCSC	Agriculture, Biocides, Development, Erosion/runoff, Foot traffic/trampling, Improper burning regime, Non-native plant impacts, Other, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Cismontane woodland, Closed-cone coniferous forest, Coastal scrub	Sandy	46	536	150	1760	Yes	1984-01-01	© 2011 Chris Winchell
Arctostaphylos montana ssp. ravenii	Presidio manzanita	Ericaceae	perennial evergreen shrub	Feb-Mar	FE	CE	G3T1	S1	1B.1		Development, Disease, Foot traffic/trampling, Insufficient population/stand size, Non-native plant impacts	Chaparral, Coastal prairie, Coastal scrub	Serpentine	45	215	150	705	Yes	1980-01-01	© 2019 Susan McDougall
Arctostaphylos imbricata	San Bruno Mountain manzanita	Ericaceae	perennial evergreen shrub	Feb-May	None	CE	G1	S1	1B.1		ORV activity, Other	Chaparral, Coastal scrub	Rocky	275	370	900	1215	Yes	1974-01-01	© 2013 Robert Sikora
Arctostaphylos klamathensis	Klamath manzanita	Ericaceae	perennial evergreen shrub	May-Aug	None	None	G2	S2	1B.2	BLM_S; SB_CalBG/RSABG	Biocides, Improper burning regime, Logging, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Chaparral (montane), Lower montane coniferous forest, Subalpine coniferous forest, Upper montane coniferous forest	Gabbroic (sometimes), Rocky, Serpentine (sometimes)	1370	2250	4495	7380	Yes	1984-01-01	©2014 Dean Wm. Taylor
Arctostaphylos luciana	Santa Lucia manzanita	Ericaceae	perennial evergreen shrub	Dec-Mar	None	None	G2	S2	1B.2	BLM_S; SB_CalBG/RSABG; SB_UCSC; USFS_S		Chaparral, Cismontane woodland	Shale	350	850	1150	2790	Yes	1974-01-01	© 2011 David Graber
Arctostaphylos montana ssp. montana	Mt. Tamalpais manzanita	Ericaceae	perennial evergreen shrub	Feb-Apr	None	None	G3T3	S3	1B.3	SB_UCBG	Improper burning regime, Non-native plant impacts, Road/trail construction/maint.	Chaparral, Valley and foothill grassland	Rocky, Serpentine	160	760	525	2495	Yes	1974-01-01	© 2018 John Doyen
Arctostaphylos montaraensis	Montara manzanita	Ericaceae	perennial evergreen shrub	Jan-Mar	None	None	G1	S1	1B.2	SB_CalBG/RSABG; SB_USDA	Erosion/runoff, Foot traffic/trampling, Improper burning regime, Non-native plant impacts, Other, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral (maritime), Coastal scrub		80	500	260	1640	Yes	1974-01-01	© 2016 Neal Kramer
Arctostaphylos montereyensis	Toro manzanita	Ericaceae	perennial evergreen shrub	Feb-Mar	None	None	G2?	S2?	1B.2	BLM_S; SB_SBBG	Development, Non-native plant impacts	Chaparral (maritime), Cismontane woodland, Coastal scrub	Sandy	30	730	100	2395	Yes	1974-01-01	© 2018 Susan McDougall
Arctostaphylos stanfordiana ssp. decumbens	Rincon Ridge manzanita	Ericaceae	perennial evergreen shrub	Feb-Apr(May)	None	None	G3T1	S1	1B.1	SB_UCSC	Agriculture, Development, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral (rhyolitic), Cismontane woodland		75	370	245	1215	Yes	1984-01-01	No Photo Available
Arctostaphylos crustacea ssp. eastwoodiana	Eastwood's brittle-leaf manzanita	Ericaceae	perennial evergreen shrub	Mar	None	None	G4T2	S2	1B.1		Development, Improper burning regime	Chaparral (maritime, sandy)		90	365	295	1200	Yes	1988-01-01	© 2006 Adonis (Don) Tate
Arctostaphylos virgata	Marin manzanita	Ericaceae	perennial evergreen shrub	Jan-Mar	None	None	G2	S2	1B.2	SB_CalBG/RSABG; SB_USDA	Erosion/runoff, Non-native plant impacts, Other, Road/trail construction/maint., Wood cutting or brush clearing	Broadleafed upland forest, Chaparral, Closed-cone coniferous forest, North Coast coniferous forest	Granitic (sometimes), Sandstone (sometimes)	60	700	195	2295	Yes	1974-01-01	No Photo Available
Calochortus clavatus var. avius	Pleasant Valley mariposa-lily	Liliaceae	perennial bulbiferous herb	May-Jul	None	None	G4T2	S2	1B.2	BLM_S; SB_SBBG; USFS_S	Agriculture, Biocides, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Logging, Mining, Non-native plant impacts, ORV activity, Other, Over-collecting/poaching, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Lower montane coniferous forest (Josephine silt loam, volcanic)		305	1800	1000	5905	Yes	1980-01-01	© 2023 Sierra Pacific Industries
Calochortus dunnii	Dunn's mariposa-lily	Liliaceae	perennial bulbiferous herb	(Feb)Apr-Jun	None	CR	G3	S3	1B.2	BLM_S; SB_CalBG/RSABG; SB_CRES; USFS_S	Development, Foot traffic/trampling, Grazing, Improper burning regime, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral, Closed-cone coniferous forest, Valley and foothill grassland	Gabbroic (sometimes), Rocky	185	1830	605	6005		1974-01-01	No Photo Available
Calochortus excavatus	Inyo County star-tulip	Liliaceae	perennial bulbiferous herb	Apr-Jul	None	None	G2	S2	1B.1	BLM_S; SB_SBBG; USFS_S	Grazing, Groundwater pumping, Improper burning regime, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Chenopod scrub, Meadows and seeps	Alkaline, Mesic	1150	2000	3775	6560	Yes	1974-01-01	No Photo Available
Calochortus greenei	Greene's mariposa-lily	Liliaceae	perennial bulbiferous herb	Jun-Aug	None	None	G3	S2S3	1B.2	BLM_S; SB_BerrySB; USFS_S	Development, Feral pigs, Foot traffic/trampling, Grazing, Logging, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint.	Cismontane woodland, Meadows and seeps, Pinyon and juniper woodland, Upper montane coniferous forest	Volcanic	1035	1890	3395	6200		1974-01-01	© 2013 Scot Loring
Calystegia stebbinsii	Stebbins' morning-glory	Convolvulaceae	perennial rhizomatous herb	Apr-Jul	FE	CE	G1	S1	1B.1	SB_CalBG/RSABG	Biocides, Development, Erosion/runoff, Foot traffic/trampling, Improper burning regime, Landfill, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Chaparral (openings), Cismontane woodland	Gabbroic (sometimes), Seeps (sometimes)	185	1090	605	3575	Yes	1980-01-01	No Photo Available
Camissonia benitensis	San Benito evening-primrose	Onagraceae	annual herb	Apr-Jun	FD	None	G2	S2	1B.1	BLM_S; SB_SBBG; SB_UCBG	Altered flood/tidal/hydrologic regime, Development, Grazing, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral, Cismontane woodland, Valley and foothill grassland	Carbonate (sometimes), Gravelly (sometimes), Serpentine	600	1280	1970	4200	Yes	1974-01-01	© 2005 David A Tharp
Collomia larsenii	talus collomia	Polemoniaceae	perennial rhizomatous herb	Jul-Sep(Oct)	None	None	G4	S2	2B.2	USFS_S	Foot traffic/trampling, Road/trail construction/maint.	Alpine boulder and rock field, Closed-cone coniferous forest, Subalpine coniferous forest, Upper montane coniferous forest	Talus, Volcanic	2210	3500	7250	11485		1980-01-01	© 2009 Leigh Johnson
Collomia rawsoniana	Rawson's flaming trumpet	Polemoniaceae	perennial rhizomatous herb	Jul-Aug	None	None	G2	S2	1B.2	SB_SBBG; USFS_S	Altered flood/tidal/hydrologic regime, Biocides, Dam/Inundation, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Logging, Other, Recreational use (non-ORV), Road/trail construction/maint.	Lower montane coniferous forest, Meadows and seeps, Riparian forest	Mesic	780	2200	2560	7220	Yes	1974-01-01	No Photo Available
Colubrina californica	Las Animas colubrina	Rhamnaceae	perennial deciduous shrub	Apr-Jun	None	None	G4	S2S3	2B.3	SB_CalBG/RSABG	Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Non-native plant impacts, ORV activity	Mojavean desert scrub, Sonoran desert scrub		10	1000	35	3280		1980-01-01	No Photo Available
Comarostaphylis diversifolia ssp. diversifolia	summer holly	Ericaceae	perennial evergreen shrub	Apr-Jun	None	None	G3T2	S2	1B.2	BLM_S; SB_CalBG/RSABG; SB_CRES	Agriculture, Altered flood/tidal/hydrologic regime, Development, Foot traffic/trampling, Improper burning regime, Mining, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Cismontane woodland		30	790	100	2590		1980-01-01	No Photo Available
Cordylanthus capitatus	Yakima bird's-beak	Orobanchaceae	annual herb (hemiparasitic)	Jul-Sep	None	None	G4	S2	2B.2		Grazing, Logging, ORV activity, Recreational use (non-ORV)	Great Basin scrub, Lower montane coniferous forest, Pinyon and juniper woodland		1800	2377	5905	7800		1974-01-01	No Photo Available
Pseudorontium cyathiferum	Deep Canyon snapdragon	Plantaginaceae	annual herb	Feb-Apr	None	None	G4G5	S1	2B.3			Sonoran desert scrub (rocky)		0	800	0	2625		1980-01-01	No Photo Available
Dudleya abramsii ssp. affinis	San Bernardino Mountains dudleya	Crassulaceae	perennial herb	Apr-Jul	None	None	G4T2	S2	1B.2	BLM_S; SB_CalBG/RSABG; USFS_S	Development, Foot traffic/trampling, Grazing, Improper burning regime, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Pebble (Pavement) plain, Pinyon and juniper woodland, Upper montane coniferous forest	Carbonate (sometimes), Granitic (sometimes)	1250	2600	4100	8530	Yes	1988-01-01	No Photo Available
Dudleya abramsii ssp. murina	mouse-gray dudleya	Crassulaceae	perennial leaf	May-Jun	None	None	G4T2	S2	1B.1	BLM_S; SB_CalBG/RSABG	Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Mining, Non-native plant impacts, Other, Over-collecting/poaching, Road/trail construction/maint.	Chaparral, Cismontane woodland, Valley and foothill grassland	Serpentine	90	525	295	1725	Yes	1980-01-01	Chris Winchell
Dudleya attenuata ssp. attenuata	Orcutt's dudleya	Crassulaceae	perennial herb	May-Jul	None	None	G4T1T2	S1	2B.1	SB_CalBG/RSABG	Development, Foot traffic/trampling, Military operations, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral, Coastal bluff scrub, Coastal scrub	Gravelly (sometimes), Rocky (sometimes)	3	50	10	165		1974-01-01	No Photo Available
Dudleya abramsii ssp. bettinae	Betty's dudleya	Crassulaceae	perennial herb	May-Jul	None	None	G4T2	S2	1B.2	SB_CalBG/RSABG	Development, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral, Coastal scrub, Valley and foothill grassland	Rocky, Serpentine	20	180	65	590	Yes	1980-01-01	No Photo Available
Centromadia parryi ssp. australis	southern tarplant	Asteraceae	annual herb	May-Nov	None	None	G3T2	S2	1B.1	SB_CalBG/RSABG; SB_CRES; SB_SBBG	Agriculture, Development, Disking, Foot traffic/trampling, Grazing, Hybridization, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Waterway bank protection/maintenance, Wood cutting or brush clearing	Marshes and swamps (margins), Valley and foothill grassland (vernally mesic), Vernal pools		0	480	0	1575		1994-01-01	No Photo Available
Hemizonia congesta ssp. congesta	congested-headed hayfield tarplant	Asteraceae	annual herb	Apr-Nov	None	None	G5T2	S2	1B.2	SB_UCBG	Agriculture, Development, Disking, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Road/trail construction/maint.	Valley and foothill grassland	Roadsides (sometimes)	20	560	65	1835	Yes	1988-01-01	© 2015 Vernon Smith
Deinandra conjugens	Otay tarplant	Asteraceae	annual herb	(Apr)May-Jun	FT	CE	G1G2	S1	1B.1	SB_CalBG/RSABG; SB_CRES	Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Non-native animal impacts, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Coastal scrub, Valley and foothill grassland	Clay	25	300	80	985		1974-01-01	No Photo Available
Deinandra floribunda	Tecate tarplant	Asteraceae	annual herb	Aug-Oct	None	None	G2	S2	1B.2	BLM_S; SB_CalBG/RSABG; SB_CRES; SB_USDA; USFS_S	Development, Grazing, Road/trail construction/maint.	Chaparral, Coastal scrub		70	1220	230	4005		1974-01-01	No Photo Available
Deinandra halliana	Hall's tarplant	Asteraceae	annual herb	(Mar)Apr-May	None	None	G3	S3	1B.1	BLM_S; SB_CalBG/RSABG; SB_SBBG	Agriculture, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Chenopod scrub, Cismontane woodland, Valley and foothill grassland	Alkaline (sometimes), Clay	260	950	855	3115	Yes	1974-01-01	No Photo Available
Carex idahoa	Idaho sedge	Cyperaceae	perennial rhizomatous herb	Jul	None	None	G3	S1	2B.3			Meadows and seeps, Subalpine coniferous forest		2850	3200	9350	10500		1988-01-01	No Photo Available
Carex petasata	Liddon's sedge	Cyperaceae	perennial herb	May-Jul	None	None	G5	S3	2B.3		Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Wood cutting or brush clearing	Broadleafed upland forest, Lower montane coniferous forest, Meadows and seeps, Pinyon and juniper woodland		600	3320	1970	10895		1984-01-01	©2019 Sierra Pacific Industries
Carex praticola	northern meadow sedge	Cyperaceae	perennial herb	May-Jul	None	None	G5	S2	2B.2		Grazing, Logging	Meadows and seeps (mesic)		0	3200	0	10500		1984-01-01	©2013 Scot Loring
Carex sheldonii	Sheldon's sedge	Cyperaceae	perennial rhizomatous herb	May-Aug	None	None	G4	S2	2B.2		Altered flood/tidal/hydrologic regime, Dam/Inundation, Degraded water quality, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Lower montane coniferous forest (mesic), Marshes and swamps (freshwater), Riparian scrub		1200	2012	3935	6600		1980-01-01	©2015 Steve Matson
Carpenteria californica	tree-anemone	Hydrangeaceae	perennial evergreen shrub	(Apr)May-Jul	None	CT	G1G2	S1S2	1B.2	BLM_S; SB_CalBG/RSABG; SB_UCBG; USFS_S	Dam/Inundation, Development, Grazing, Improper burning regime, Logging, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter	Chaparral, Cismontane woodland	Granitic (usually)	340	1340	1115	4395	Yes	1974-01-01	No Photo Available
Clarkia delicata	delicate clarkia	Onagraceae	annual herb	Apr-Jun	None	None	G3	S3	1B.2	BLM_S; SB_CRES	Development, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral, Cismontane woodland	Gabbroic (often)	235	1000	770	3280		1974-01-01	No Photo Available
Clarkia franciscana	Presidio clarkia	Onagraceae	annual herb	May-Jul	FE	CE	G1	S1	1B.1	SB_UCBG	Development, Foot traffic/trampling, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Coastal scrub, Valley and foothill grassland (serpentinite)		25	335	80	1100	Yes	1974-01-01	No Photo Available
Clarkia imbricata	Vine Hill clarkia	Onagraceae	annual herb	Jun-Aug	FE	CE	G1	S1	1B.1	SB_CalBG/RSABG; SB_UCBG	Agriculture, Development, Hybridization, Non-native plant impacts, Other, Over-collecting/poaching, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Valley and foothill grassland	Acidic, Loam, Sandy	50	75	165	245	Yes	1974-01-01	No Photo Available
Clarkia jolonensis	Jolon clarkia	Onagraceae	annual herb	Apr-Jun	None	None	G2	S2	1B.2	SB_SBBG; USFS_S	Dam/Inundation, Development, Erosion/runoff, Foot traffic/trampling, Non-native plant impacts, Other, Road/trail construction/maint.	Chaparral, Cismontane woodland, Coastal scrub, Riparian woodland		20	660	65	2165	Yes	1980-01-01	No Photo Available
Clarkia lingulata	Merced clarkia	Onagraceae	annual herb	May-Jun	None	CE	G1	S1	1B.1	SB_CalBG/RSABG; SB_UCBG; USFS_S	Biocides, Erosion/runoff, Grazing, Non-native plant impacts, Road/trail construction/maint.	Chaparral, Cismontane woodland		400	455	1310	1495	Yes	1974-01-01	No Photo Available
Clarkia mildrediae ssp. mildrediae	Mildred's clarkia	Onagraceae	annual herb	May-Aug	None	None	G3T3?	S3?	1B.3	BLM_S; SB_UCSC; USFS_S	Biocides, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Insufficient population/stand size, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Cismontane woodland, Lower montane coniferous forest	Granitic (usually), Sandy	245	1710	805	5610	Yes	1974-01-01	No Photo Available
Clarkia mosquinii	Mosquin's clarkia	Onagraceae	annual herb	May-Jul(Sep)	None	None	G2	S2	1B.1	BLM_S; SB_CalBG/RSABG; USFS_S	Biocides, Dam/Inundation, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Cismontane woodland, Lower montane coniferous forest	Roadsides, Rocky	185	1490	605	4890	Yes	1980-01-01	© 2002 Dean Wm Taylor
Clarkia rostrata	beaked clarkia	Onagraceae	annual herb	Apr-May	None	None	G2G3	S2S3	1B.3	BLM_S; SB_CalBG/RSABG; SB_UCBG	Altered flood/tidal/hydrologic regime, Biocides, Dam/Inundation, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint.	Cismontane woodland, Valley and foothill grassland		60	500	195	1640	Yes	1974-01-01	No Photo Available
Clarkia speciosa ssp. immaculata	Pismo clarkia	Onagraceae	annual herb	May-Jul	FE	CR	G4T1	S1	1B.1	SB_CalBG/RSABG; SB_SBBG	Biocides, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral (margins, openings), Cismontane woodland, Valley and foothill grassland	Sandy	25	185	80	605	Yes	1980-01-01	No Photo Available
Clarkia springvillensis	Springville clarkia	Onagraceae	annual herb	(Mar)Apr-Jul	FT	CE	G2	S2	1B.2	SB_UCSC	Biocides, Development, Foot traffic/trampling, Grazing, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Wood cutting or brush clearing	Chaparral, Cismontane woodland, Valley and foothill grassland	Granitic	245	1220	805	4005	Yes	1980-01-01	No Photo Available
Clarkia tembloriensis ssp. calientensis	Vasek's clarkia	Onagraceae	annual herb	Apr	None	None	G3T1	S1	1B.1	BLM_S; SB_CalBG/RSABG	Grazing, Non-native plant impacts, Road/trail construction/maint.	Valley and foothill grassland		275	500	900	1640	Yes	1980-01-01	No Photo Available
Dudleya blochmaniae ssp. insularis	Santa Rosa Island dudleya	Crassulaceae	perennial herb	Mar-Apr	None	None	G2T1	S1	1B.1			Coastal bluff scrub		3	10	10	35	Yes	1974-01-01	No Photo Available
Chloropyron maritimum ssp. maritimum	salt marsh bird's-beak	Orobanchaceae	annual herb (hemiparasitic)	May-Oct(Nov)	FE	CE	G4?T1	S1	1B.2	BLM_S; SB_CalBG/RSABG; SB_CRES; SB_SBBG	Altered flood/tidal/hydrologic regime, Dam/Inundation, Development, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, Insufficient population/stand size, Military operations, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Coastal dunes, Marshes and swamps (coastal salt)		0	30	0	100		1974-01-01	No Photo Available
Chloropyron maritimum ssp. palustre	Point Reyes salty bird's-beak	Orobanchaceae	annual herb (hemiparasitic)	Jun-Oct	None	None	G4?T2	S2	1B.2	BLM_S; SB_CalBG/RSABG	Altered flood/tidal/hydrologic regime, Degraded water quality, Development, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, Insufficient population/stand size, Non-native plant impacts, ORV activity, Other, Pollution, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Vandalism/dumping/litter	Marshes and swamps (coastal salt)		0	10	0	35		1974-01-01	©2017 John Doyen
Chloropyron molle ssp. hispidum	hispid salty bird's-beak	Orobanchaceae	annual herb (hemiparasitic)	Jun-Sep	None	None	G2T1	S1	1B.1	BLM_S	Agriculture, Altered flood/tidal/hydrologic regime, Dam/Inundation, Development, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Meadows and seeps, Playas, Valley and foothill grassland	Alkaline	1	155	5	510	Yes	1974-01-01	No Photo Available
Chloropyron molle ssp. molle	soft salty bird's-beak	Orobanchaceae	annual herb (hemiparasitic)	Jun-Nov	FE	CR	G2T1	S1	1B.2	SB_CalBG/RSABG	Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Channelization, Development, Disking, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Military operations, Non-native plant impacts, ORV activity, Other, Pollution, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Vandalism/dumping/litter	Marshes and swamps (coastal salt)		0	3	0	10	Yes	1974-01-01	© 2014 John Doyen
Cordylanthus nidularius	Mt. Diablo bird's-beak	Orobanchaceae	annual herb (hemiparasitic)	Jun-Aug	None	CR	G1	S1	1B.1	SB_UCBG	Feral pigs, Foot traffic/trampling, Road/trail construction/maint.	Chaparral (serpentinite)		600	800	1970	2625	Yes	1974-01-01	No Photo Available
Dicranostegia orcuttiana	Orcutt's bird's-beak	Orobanchaceae	annual herb (hemiparasitic)	(Mar)Apr-Jul(Sep)	None	None	G3	S1	2B.1	SB_CRES	Development, Mining, Non-native plant impacts, Road/trail construction/maint.	Coastal scrub		10	350	35	1150		1974-01-01	No Photo Available
Aphanisma blitoides	aphanisma	Chenopodiaceae	annual herb	Feb-Jun	None	None	G3G4	S2	1B.2	SB_CRES; SB_SBBG	Development, Erosion/runoff, Foot traffic/trampling, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Coastal bluff scrub, Coastal dunes, Coastal scrub	Gravelly (sometimes), Sandy (sometimes)	1	305	5	1000		1980-01-01	© 2010 Larry Sward
Arabis aculeolata	Waldo rockcress	Brassicaceae	perennial herb	Apr-Jun	None	None	G4	S2	2B.2	SB_BerrySB	Erosion/runoff, Logging	Broadleafed upland forest, Lower montane coniferous forest, Upper montane coniferous forest	Serpentine	410	1800	1345	5905		1980-01-01	© 2020 John Doyen
Boechera bodiensis	Bodie Hills rockcress	Brassicaceae	perennial herb	Jun-Jul(Aug)	None	None	G3	S3	1B.3	BLM_S; USFS_S	Foot traffic/trampling, Grazing, Mining, ORV activity, Recreational use (non-ORV), Road/trail construction/maint.	Alpine boulder and rock field, Great Basin scrub, Pinyon and juniper woodland, Subalpine coniferous forest		2085	3530	6840	11580		1984-01-01	No Photo Available
Boechera peirsonii	San Bernardino rockcress	Brassicaceae	perennial herb	Mar-Aug	None	None	G1	S1	1B.2	SB_CalBG/RSABG; USFS_S	Erosion/runoff, Foot traffic/trampling, Over-collecting/poaching, Recreational use (non-ORV)	Subalpine coniferous forest (rocky)		2700	3200	8860	10500	Yes	1980-01-01	No Photo Available
Boechera cobrensis	Masonic rockcress	Brassicaceae	perennial herb	Jun-Jul	None	None	G5	S3	2B.3		Development, Foot traffic/trampling, Grazing, Road/trail construction/maint.	Great Basin scrub, Pinyon and juniper woodland	Sandy	1375	3105	4510	10190		1974-01-01	No Photo Available
Boechera constancei	Constance's rockcress	Brassicaceae	perennial herb	May-Jul	None	None	G2	S2	1B.1	USFS_S	Biocides, Disease, Erosion/runoff, Improper burning regime, Logging, Mining, ORV activity, Other, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Lower montane coniferous forest, Upper montane coniferous forest	Rocky, Serpentine	975	2025	3200	6645	Yes	1974-01-01	No Photo Available
Boechera hoffmannii	Hoffmann's rockcress	Brassicaceae	perennial herb	Feb-Apr	FE	None	G1G2	S1S2	1B.1	SB_CalBG/RSABG; SB_SBBG	Erosion/runoff, Grazing, Non-native plant impacts	Chaparral, Coastal bluff scrub, Coastal scrub	Rocky, Sandy, Volcanic	60	395	195	1295	Yes	1974-01-01	No Photo Available
Boechera johnstonii	Johnston's rockcress	Brassicaceae	perennial herb	Feb-Jun	None	None	G1	S1	1B.2	SB_CalBG/RSABG; USFS_S	Development, Foot traffic/trampling, Grazing, Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Lower montane coniferous forest	Clay	1350	2150	4430	7055	Yes	1974-01-01	No Photo Available
Boechera koehleri	Koehler's stipitate rockcress	Brassicaceae	perennial herb	(Mar)Apr-Jul	None	None	G3G4	S3	1B.3	USFS_S	Erosion/runoff, Foot traffic/trampling, ORV activity, Other, Road/trail construction/maint.	Chaparral, Lower montane coniferous forest	Rocky, Serpentine	155	1660	510	5445		1988-01-01	©2019 Dana York
Arabis mcdonaldiana	McDonald's rockcress	Brassicaceae	perennial herb	May-Jul	FE	CE	G3	S3	1B.1	SB_BerrySB; SB_CalBG/RSABG	Grazing, Mining, Other, Road/trail construction/maint.	Lower montane coniferous forest, Upper montane coniferous forest	Serpentine	135	1800	445	5905		1974-01-01	© 2003 Norman Jensen
Boechera parishii	Parish's rockcress	Brassicaceae	perennial herb	Apr-May	None	None	G2	S2	1B.2	SB_CalBG/RSABG; USFS_S	Development, Foot traffic/trampling, Grazing, Mining, Non-native animal impacts, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Pebble (Pavement) plain, Pinyon and juniper woodland, Upper montane coniferous forest	Carbonate (sometimes), Rocky	1770	2990	5805	9810	Yes	1974-01-01	No Photo Available
Boechera pinzliae	Pinzl's rockcress	Brassicaceae	perennial herb	Jul	None	None	G1G2	S1	1B.3	USFS_S		Alpine boulder and rock field, Subalpine coniferous forest (scree, sandy)		3000	3350	9845	10990		1988-01-01	No Photo Available
Boechera lincolnensis	Lincoln rockcress	Brassicaceae	perennial herb	Mar-May	None	None	G4G5	S3	2B.3	BLM_S		Chenopod scrub, Mojavean desert scrub	Carbonate	1100	2705	3610	8875		1984-01-01	No Photo Available
Arabis rigidissima var. rigidissima	Trinity Mountains rockcress	Brassicaceae	perennial herb	Jun-Aug	None	None	G3T3	S3	1B.3			Upper montane coniferous forest (gravelly, rocky)		1190	2200	3905	7220	Yes	1974-01-01	©2015 Dana York
Boechera shockleyi	Shockley's rockcress	Brassicaceae	perennial herb	May-Jun	None	None	G3	S2	2B.2	SB_CalBG/RSABG; USFS_S	Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Mining, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Pinyon and juniper woodland (carbonate, gravelly, quartzite, rocky)		875	2310	2870	7580		1974-01-01	No Photo Available
Boechera tiehmii	Tiehm's rockcress	Brassicaceae	perennial herb	Jul-Aug	None	None	G3	S3	1B.3	SB_CalBG/RSABG; USFS_S	Road/trail construction/maint.	Alpine boulder and rock field (granitic)		2970	3590	9745	11780		1988-01-01	No Photo Available
Arctomecon merriamii	white bear poppy	Papaveraceae	perennial herb	(Mar)Apr-May	None	None	G3	S3	2B.2	SB_CalBG/RSABG	Erosion/runoff, Foot traffic/trampling, Grazing, Military operations, Mining, Non-native animal impacts, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint.	Chenopod scrub, Mojavean desert scrub	Rocky	490	1800	1610	5905		1980-01-01	© 2010 James M. Andre
Arctostaphylos auriculata	Mt. Diablo manzanita	Ericaceae	perennial evergreen shrub	Jan-Mar	None	None	G2	S2	1B.3	SB_UCSC	Biocides, Development, Grazing, Improper burning regime, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral (sandstone), Cismontane woodland		135	650	445	2135	Yes	1974-01-01	© 2006 Steve Matson
Arctostaphylos bakeri ssp. bakeri	Baker's manzanita	Ericaceae	perennial evergreen shrub	Feb-Apr	None	CR	G2T1	S1	1B.1	SB_UCSC	Development, Grazing, Non-native plant impacts, Road/trail construction/maint., Vandalism/dumping/litter	Broadleafed upland forest, Chaparral	Serpentine (often)	75	300	245	985	Yes	1974-01-01	© 2004 David Graber
Atriplex coronata var. notatior	San Jacinto Valley crownscale	Chenopodiaceae	annual herb	Apr-Aug	FE	None	G4T1	S1	1B.1	SB_CalBG/RSABG	Agriculture, Altered flood/tidal/hydrologic regime, Dam/Inundation, Development, Disking, Grazing, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter	Playas, Valley and foothill grassland (mesic), Vernal pools	Alkaline	139	500	455	1640	Yes	1988-01-01	© 2008 Larry Sward
Atriplex parishii	Parish's brittlescale	Chenopodiaceae	annual herb	Jun-Oct	None	None	G1G2	S1	1B.1	BLM_S; SB_CRES; USFS_S	Agriculture, Development, Disking, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity	Chenopod scrub, Playas, Vernal pools	Alkaline	25	1900	80	6235		1988-01-01	No Photo Available
Extriplex joaquinana	San Joaquin spearscale	Chenopodiaceae	annual herb	Apr-Oct	None	None	G2	S2	1B.2	BLM_S; SB_CalBG/RSABG	Agriculture, Biocides, Development, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, Landfill, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Waterway bank protection/maintenance	Chenopod scrub, Meadows and seeps, Playas, Valley and foothill grassland	Alkaline	1	835	5	2740	Yes	1988-01-01	No Photo Available
Atriplex coronata var. vallicola	Lost Hills crownscale	Chenopodiaceae	annual herb	Apr-Sep	None	None	G4T3	S3	1B.2	BLM_S	Agriculture, Development, Erosion/runoff, Grazing, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Waterway bank protection/maintenance	Chenopod scrub, Valley and foothill grassland, Vernal pools	Alkaline	50	635	165	2085	Yes	1974-01-01	No Photo Available
Ayenia compacta	California ayenia	Malvaceae	perennial herb	Mar-Apr	None	None	G4	S3	2B.3	SB_CalBG/RSABG	Foot traffic/trampling, Mining, ORV activity, Recreational use (non-ORV)	Mojavean desert scrub, Sonoran desert scrub	Rocky	150	1095	490	3595		1974-01-01	No Photo Available
Ceanothus maritimus	maritime ceanothus	Rhamnaceae	perennial evergreen shrub	Jan-Apr	None	CR	G2	S2	1B.2	SB_CalBG/RSABG	Development, Foot traffic/trampling, Grazing	Chaparral (maritime), Coastal bluff scrub, Valley and foothill grassland	Clay	10	150	35	490	Yes	1974-01-01	No Photo Available
Ceanothus masonii	Mason's ceanothus	Rhamnaceae	perennial evergreen shrub	Mar-Apr	None	CR	G1	S1	1B.2	SB_CalBG/RSABG; SB_USDA	Grazing, Improper burning regime, Other, Road/trail construction/maint.	Chaparral (openings, rocky, serpentinite)		230	500	755	1640	Yes	1974-01-01	No Photo Available
Ceanothus purpureus	holly-leaved ceanothus	Rhamnaceae	perennial evergreen shrub	Feb-Jun	None	None	G2	S2	1B.2	SB_SBBG	Agriculture, Development, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Cismontane woodland	Rocky, Volcanic	120	640	395	2100	Yes	1974-01-01	© 2012 Jake Ruygt
Ceanothus roderickii	Pine Hill ceanothus	Rhamnaceae	perennial evergreen shrub	Apr-Jun	FE	CR	G1	S1	1B.1	SB_CalBG/RSABG; SB_SBBG	Development, Erosion/runoff, Improper burning regime, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Cismontane woodland	Gabbroic (sometimes), Serpentine (sometimes)	245	1090	805	3575	Yes	1974-01-01	No Photo Available
Ceanothus sonomensis	Sonoma ceanothus	Rhamnaceae	perennial evergreen shrub	Feb-Apr	None	None	G2	S2	1B.2	SB_SBBG	Development, Improper burning regime, Other, Road/trail construction/maint.	Chaparral (sandy, serpentinite, volcanic)		215	800	705	2625	Yes	1974-01-01	No Photo Available
Ceanothus verrucosus	wart-stemmed ceanothus	Rhamnaceae	perennial evergreen shrub	Dec-May	None	None	G2G3	S2?	2B.2	SB_CalBG/RSABG; SB_CRES; SB_UCBG	Agriculture, Dam/Inundation, Development, Foot traffic/trampling, Improper burning regime, Mining, Non-native plant impacts, Other, Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Coastal scrub		1	380	5	1245		1974-01-01	© Rick York and CNPS
Delphinium parryi ssp. blochmaniae	dune larkspur	Ranunculaceae	perennial herb	Apr-Jun	None	None	G4T2	S2	1B.2	BLM_S	Development, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint.	Chaparral (maritime), Coastal dunes		0	200	0	655	Yes	1988-01-01	No Photo Available
Delphinium purpusii	rose-flowered larkspur	Ranunculaceae	perennial herb	(Mar)Apr-May	None	None	G3	S3	1B.3	BLM_S; USFS_S	Development, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Over-collecting/poaching, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Chaparral, Cismontane woodland, Pinyon and juniper woodland	Carbonate (often), Rocky	300	1340	985	4395	Yes	1980-01-01	No Photo Available
Delphinium recurvatum	recurved larkspur	Ranunculaceae	perennial herb	Mar-Jun	None	None	G2?	S2	1B.2	BLM_S; SB_SBBG	Agriculture, Dam/Inundation, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Landfill, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter	Chenopod scrub, Cismontane woodland, Valley and foothill grassland	Alkaline	3	790	10	2590	Yes	1988-01-01	No Photo Available
Delphinium stachydeum	spiked larkspur	Ranunculaceae	perennial herb	Jun-Aug	None	None	G5?	S3	2B.3		Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Logging, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Great Basin scrub, Upper montane coniferous forest (edges)	Rocky	1300	2600	4265	8530		1974-01-01	No Photo Available
Delphinium umbraculorum	umbrella larkspur	Ranunculaceae	perennial herb	Apr-Jun	None	None	G3	S3	1B.3	BLM_S; SB_CalBG/RSABG; USFS_S	Grazing, Improper burning regime, Non-native plant impacts, Road/trail construction/maint.	Chaparral, Cismontane woodland		400	1600	1310	5250	Yes	1974-01-01	© 2016 Amelia Ryan
Delphinium variegatum ssp. thornei	Thorne's royal larkspur	Ranunculaceae	perennial herb	(Mar)Apr-May	None	None	G4T1	S1	1B.1	SB_CalBG/RSABG	Erosion/runoff	Cismontane woodland, Valley and foothill grassland (coastal)		250	575	820	1885	Yes	1974-01-01	No Photo Available
Eriogonum ovalifolium var. vineum	Cushenbury buckwheat	Polygonaceae	perennial herb	May-Aug	FE	None	G5T1	S1	1B.1	SB_CalBG/RSABG	Development, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Joshua tree "woodland", Mojavean desert scrub, Pinyon and juniper woodland	Carbonate	1400	2440	4595	8005	Yes	1974-01-01	No Photo Available
Eriogonum pendulum	Waldo wild buckwheat	Polygonaceae	perennial herb	Aug-Sep	None	None	G4	S2S3	2B.2		Erosion/runoff, Improper burning regime, Mining, Road/trail construction/maint.	Lower montane coniferous forest, Upper montane coniferous forest	Serpentine	230	1000	755	3280		1974-01-01	© 2021 Scot Loring
Eriogonum prociduum	prostrate buckwheat	Polygonaceae	perennial herb	May-Aug	None	None	G3	S3	1B.2	BLM_S; SB_BerrySB; USFS_S	Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Great Basin scrub, Pinyon and juniper woodland, Upper montane coniferous forest	Volcanic	1300	2705	4265	8875		1974-01-01	No Photo Available
Johanneshowellia puberula	downy buckwheat	Polygonaceae	annual herb	May-Sep	None	None	G4?	S1	2B.3			Pinyon and juniper woodland (carbonate, sandy or gravelly)		1300	2900	4265	9515		1980-01-01	No Photo Available
Hazardia cana	San Clemente Island hazardia	Asteraceae	perennial evergreen shrub	Jun-Sep	None	None	G3	S3	1B.2			Coastal bluff scrub, Coastal scrub, Riparian forest		60	500	195	1640		1974-01-01	© 2009 Zoya Akulova
Hazardia orcuttii	Orcutt's hazardia	Asteraceae	perennial evergreen shrub	Aug-Oct	None	CT	G1	S1	1B.1	SB_CalBG/RSABG	Development, Erosion/runoff, Foot traffic/trampling, Improper burning regime, Insufficient population/stand size, Non-native plant impacts, ORV activity, Recreational use (non-ORV)	Chaparral (maritime), Coastal scrub	Clay (often)	80	85	260	280		1984-01-01	© 2011 Keir Morse
Helianthella castanea	Diablo helianthella	Asteraceae	perennial herb	Mar-Jun	None	None	G2	S2	1B.2	BLM_S; SB_CalBG/RSABG	Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Insufficient population/stand size, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Broadleafed upland forest, Chaparral, Cismontane woodland, Coastal scrub, Riparian woodland, Valley and foothill grassland	Rocky (usually)	60	1300	195	4265	Yes	1974-01-01	© 2013 Christopher Bronny
Crocanthemum greenei	island rush-rose	Cistaceae	perennial evergreen shrub	(Jan)Mar-Jul(Aug)	FT	None	G3	S3	1B.2	SB_SBBG	Erosion/runoff, Foot traffic/trampling, Grazing, Non-native animal impacts, Non-native plant impacts, Other, Over-collecting/poaching, Road/trail construction/maint.	Chaparral, Cismontane woodland, Closed-cone coniferous forest, Coastal scrub	Openings, Rocky	15	490	50	1610	Yes	1974-01-01	No Photo Available
Limnanthes floccosa ssp. californica	Butte County meadowfoam	Limnanthaceae	annual herb	Mar-May	FE	CE	G4T1	S1	1B.1	SB_CalBG/RSABG	Agriculture, Development, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Surface water diversion	Valley and foothill grassland (mesic), Vernal pools		46	930	150	3050	Yes	1980-01-01	© 2007 George W. Hartwell
Limnanthes alba ssp. parishii	Parish's meadowfoam	Limnanthaceae	annual herb	Apr-Jun	None	CE	G4T2	S2	1B.2	BLM_S; SB_CalBG/RSABG; SB_USDA; USFS_S	Altered flood/tidal/hydrologic regime, Biocides, Channelization, Dam/Inundation, Development, Erosion/runoff, Foot traffic/trampling, Grazing, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Lower montane coniferous forest, Meadows and seeps, Vernal pools	Vernally Mesic	600	2000	1970	6560	Yes	1974-01-01	© 2005 Christopher L. Christie
Limnanthes vinculans	Sebastopol meadowfoam	Limnanthaceae	annual herb	Apr-May	FE	CE	G1	S1	1B.1	SB_CalBG/RSABG; SB_UCBG	Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Development, Disking, Erosion/runoff, Grazing, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Surface water diversion, Vandalism/dumping/litter, Wood cutting or brush clearing	Meadows and seeps, Valley and foothill grassland, Vernal pools	Vernally Mesic	15	305	50	1000	Yes	1974-01-01	© 2015 Vernon Smith
Linanthus bellus	desert beauty	Polemoniaceae	annual herb	Apr-May	None	None	G2G3	S2	2B.1	SB_CRES	Development, Grazing, Landfill, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint.	Chaparral (sandy)		1000	1400	3280	4595		1974-01-01	No Photo Available
Linanthus concinnus	San Gabriel linanthus	Polemoniaceae	annual herb	Apr-Jul	None	None	G2	S2	1B.2	SB_CalBG/RSABG; USFS_S	Development, Foot traffic/trampling, Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral, Lower montane coniferous forest, Upper montane coniferous forest	Openings, Rocky	1520	2800	4985	9185	Yes	1974-01-01	© 2019 RT Hawke
Diplacus pictus	calico monkeyflower	Phrymaceae	annual herb	Mar-May	None	None	G2	S2	1B.2	BLM_S; SB_CalBG/RSABG	Dam/Inundation, Erosion/runoff, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, Other, Road/trail construction/maint.	Broadleafed upland forest, Cismontane woodland	Disturbed areas, Granitic	100	1430	330	4690	Yes	1974-01-01	© 2020 Matt C. Berger
Diplacus pulchellus	yellow-lip pansy monkeyflower	Phrymaceae	annual herb	Apr-Jul	None	None	G2	S2	1B.2	BLM_S; SB_SBBG; USFS_S	Altered flood/tidal/hydrologic regime, Dam/Inundation, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Lower montane coniferous forest, Meadows and seeps	Clay, Disturbed areas (often), Vernally Mesic	600	2000	1970	6560	Yes	1974-01-01	© 2018 Sierra Pacific Industries
Erythranthe purpurea	little purple monkeyflower	Phrymaceae	annual herb	May-Jun	None	None	G2	S2	1B.2	SB_CalBG/RSABG; USFS_S	Altered flood/tidal/hydrologic regime, Development, Foot traffic/trampling, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Meadows and seeps, Pebble (Pavement) plain, Upper montane coniferous forest		1900	2300	6235	7545		1974-01-01	No Photo Available
Erythranthe shevockii	Kelso Creek monkeyflower	Phrymaceae	annual herb	Mar-May	None	None	G1	S1	1B.1	BLM_S; SB_CalBG/RSABG; USFS_S	Agriculture, Development, Erosion/runoff, Grazing, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Joshua tree "woodland", Pinyon and juniper woodland	Granitic (sometimes), Gravelly (sometimes), Metamorphic (sometimes), Sandy (sometimes)	800	1340	2625	4395	Yes	1984-01-01	© 2021 Ryan O'Dell
Arctostaphylos franciscana	Franciscan manzanita	Ericaceae	perennial evergreen shrub	Feb-Apr	FE	None	GHC	S1	1B.1	SB_UCBG	Development, Other, Road/trail construction/maint.	Coastal scrub (serpentinite)		60	300	195	985	Yes	1974-01-01	© 2015 Neal Kramer
Arenaria paludicola	marsh sandwort	Caryophyllaceae	perennial stoloniferous herb	May-Aug	FE	CE	G1	S1	1B.1	SB_SBBG	Altered flood/tidal/hydrologic regime, Degraded water quality, Development, Feral pigs, Non-native plant impacts, ORV activity, Other, Pollution, Surface water diversion, Vandalism/dumping/litter	Marshes and swamps (brackish, freshwater)	Openings, Sandy	3	170	10	560		1984-01-01	No Photo Available
Eremogone ursina	Big Bear Valley sandwort	Caryophyllaceae	perennial herb	May-Aug	FT	None	G1	S1	1B.2	SB_CalBG/RSABG	Development, Erosion/runoff, Foot traffic/trampling, Grazing, Logging, Mining, Non-native animal impacts, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Meadows and seeps, Pebble (Pavement) plain, Pinyon and juniper woodland	Mesic, Rocky	1800	2900	5905	9515	Yes	1974-01-01	No Photo Available
Eremothera minor	Nelson's evening-primrose	Onagraceae	annual herb	Apr-Jul	None	None	G4	S1S2	2B.3		Non-native plant impacts, Other	Chenopod scrub, Great Basin scrub (sandy)		1200	1380	3935	4530		1980-01-01	No Photo Available
Camissonia sierrae ssp. alticola	Mono Hot Springs evening-primrose	Onagraceae	annual herb	May-Aug	None	None	G3T2	S2	1B.2	USFS_S	Development, Erosion/runoff, Foot traffic/trampling, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Lower montane coniferous forest, Upper montane coniferous forest	Granitic, Gravelly	1035	2410	3395	7905	Yes	1980-01-01	No Photo Available
Eastwoodiella californica	swamp harebell	Campanulaceae	perennial rhizomatous herb	Jun-Oct	None	None	G3	S3	1B.2	BLM_S; SB_CalBG/RSABG	Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Degraded water quality, Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Vandalism/dumping/litter, Wood cutting or brush clearing	Bogs and fens, Closed-cone coniferous forest, Coastal prairie, Marshes and swamps (freshwater), Meadows and seeps, North Coast coniferous forest	Mesic	1	405	5	1330	Yes	1974-01-01	No Photo Available
Ravenella exigua	chaparral harebell	Campanulaceae	annual herb	May-Jun	None	None	G2	S2	1B.2	BLM_S; SB_CalBG/RSABG	Development, Erosion/runoff, Grazing, Mining, Non-native plant impacts, Road/trail construction/maint.	Chaparral (rocky, usually serpentinite)		275	1250	900	4100	Yes	1974-01-01	No Photo Available
Ravenella sharsmithiae	Sharsmith's harebell	Campanulaceae	annual herb	Apr-Jun	None	None	G1G2	S1S2	1B.2	BLM_S		Chaparral (rocky, serpentinite)		490	855	1610	2805	Yes	1984-01-01	No Photo Available
Campanula shetleri	Castle Crags harebell	Campanulaceae	perennial rhizomatous herb	Jun-Sep	None	None	G2	S2	1B.3	BLM_S; SB_BerrySB; USFS_S	Foot traffic/trampling, Recreational use (non-ORV)	Lower montane coniferous forest (rocky)		1220	1830	4005	6005	Yes	1974-01-01	©2020 Neal Kramer
Smithiastrum wilkinsianum	Wilkin's harebell	Campanulaceae	perennial rhizomatous herb	Jul-Sep	None	None	G2	S2	1B.2	SB_CalBG/RSABG; USFS_S	Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Logging, Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion	Meadows and seeps, Subalpine coniferous forest, Upper montane coniferous forest		1270	2600	4165	8530	Yes	1974-01-01	©2010 Eric White
Cardamine pachystigma var. dissectifolia	dissected-leaved toothwort	Brassicaceae	perennial rhizomatous herb	Feb-May	None	None	G3G5T2Q	S2	1B.2	BLM_S	Biocides, Improper burning regime, ORV activity, Road/trail construction/maint.	Chaparral, Lower montane coniferous forest	Rocky, Serpentine (usually)	255	2100	835	6890	Yes	1988-01-01	No Photo Available
Carex californica	California sedge	Cyperaceae	perennial rhizomatous herb	May-Aug	None	None	G5	S2	2B.2		Development, Erosion/runoff, Grazing, Logging, ORV activity, Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Bogs and fens, Closed-cone coniferous forest, Coastal prairie, Marshes and swamps (margins), Meadows and seeps		90	335	295	1100		1974-01-01	No Photo Available
Draba carnosula	Mt. Eddy draba	Brassicaceae	perennial herb	Jul-Aug	None	None	G2	S2	1B.3	SB_BerrySB; USFS_S		Subalpine coniferous forest, Upper montane coniferous forest	Rocky, Serpentine	1935	3000	6350	9845	Yes	1980-01-01	©2011 Steve Matson
Draba cruciata	Mineral King draba	Brassicaceae	perennial herb	Jun-Aug	None	None	G3	S3	1B.3	USFS_S	Foot traffic/trampling, Road/trail construction/maint.	Subalpine coniferous forest (gravelly)		2500	3315	8205	10875	Yes	1974-01-01	No Photo Available
Draba sharsmithii	Mt. Whitney draba	Brassicaceae	perennial herb	Jul-Aug	None	None	G2	S2	1B.3	SB_CalBG/RSABG; USFS_S	Foot traffic/trampling, Road/trail construction/maint.	Alpine boulder and rock field, Subalpine coniferous forest		3300	3960	10825	12995	Yes	1974-01-01	No Photo Available
Draba incrassata	Sweetwater Mountains draba	Brassicaceae	perennial stoloniferous herb	Jul-Aug	None	None	G2	S2S3	1B.3	USFS_S	ORV activity, Road/trail construction/maint.	Alpine boulder and rock field (rhyolitic talus)		2500	3965	8205	13010	Yes	1980-01-01	No Photo Available
Cusickiella quadricostata	Bodie Hills cusickiella	Brassicaceae	perennial herb	May-Jul	None	None	G2	S2	1B.2	BLM_S; SB_SBBG	Erosion/runoff, Foot traffic/trampling, Grazing, Mining, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Great Basin scrub, Pinyon and juniper woodland	Clay (sometimes), Rocky (sometimes)	2000	2800	6560	9185		1974-01-01	No Photo Available
Draba sierrae	Sierra draba	Brassicaceae	perennial herb	Jun-Aug	None	None	G3	S3	1B.3			Alpine boulder and rock field (carbonate, granitic)		3500	4265	11485	13995	Yes	1974-01-01	No Photo Available
Drosera anglica	English sundew	Droseraceae	perennial herb (carnivorous)	Jun-Sep	None	None	G5	S2	2B.3		Altered flood/tidal/hydrologic regime, Foot traffic/trampling, Grazing, Logging, Other, Over-collecting/poaching, Recreational use (non-ORV)	Bogs and fens, Meadows and seeps (mesic)		1300	2255	4265	7400		1974-01-01	Barry Rice 2007
Dryopteris filix-mas	male fern	Dryopteridaceae	perennial rhizomatous herb	Jul-Sep	None	None	G5	S2	2B.3			Upper montane coniferous forest (granitic, rocky)		2400	3100	7875	10170		1974-01-01	No Photo Available
Asarum marmoratum	marbled wild-ginger	Aristolochiaceae	perennial rhizomatous herb	Apr-Aug	None	None	G4?	S2	2B.3	SB_UCSC	Logging, Road/trail construction/maint.	Lower montane coniferous forest		200	1800	655	5905		1988-01-01	© 2021 Scot Loring
Asplenium septentrionale	northern spleenwort	Aspleniaceae	perennial rhizomatous herb	Jul-Aug	None	None	G5	S3	2B.3		Logging	Chaparral, Lower montane coniferous forest, Subalpine coniferous forest, Upper montane coniferous forest	Granitic, Rocky	1615	3350	5300	10990		1974-01-01	©2018 Sierra Pacific Industries
Asplenium trichomanes ssp. trichomanes	maidenhair spleenwort	Aspleniaceae	perennial rhizomatous herb	May-Jul	None	None	G5T5	S1	2B.1		Recreational use (non-ORV), Road/trail construction/maint.	Lower montane coniferous forest (rocky)		185	200	605	655		1984-01-01	©2012 Dana York
Asplenium viride	green spleenwort	Aspleniaceae	perennial rhizomatous herb	Jun-Aug	None	None	G5	S1	2B.3	SB_UCSC		Subalpine coniferous forest (carbonate, gravelly, rocky)		2050	2050	6725	6725		1974-01-01	No Photo Available
Symphyotrichum lentum	Suisun Marsh aster	Asteraceae	perennial rhizomatous herb	(Apr)May-Nov	None	None	G2	S2	1B.2	SB_CalBG/RSABG; SB_USDA	Biocides, Development, Erosion/runoff, Foot traffic/trampling, Military operations, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Waterway bank protection/maintenance	Marshes and swamps (brackish, freshwater)		0	3	0	10	Yes	1974-01-01	No Photo Available
Symphyotrichum greatae	Greata's aster	Asteraceae	perennial rhizomatous herb	Jun-Oct	None	None	G2	S2	1B.3	BLM_S; SB_CalBG/RSABG	Dam/Inundation, Development, Erosion/runoff, Foot traffic/trampling, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint.	Broadleafed upland forest, Chaparral, Cismontane woodland, Lower montane coniferous forest, Riparian woodland	Mesic	300	2010	985	6595	Yes	1974-01-01	© 2006 Michael Charters
Astragalus agnicidus	Humboldt County milk-vetch	Fabaceae	perennial herb	(Mar)Apr-Sep	None	CE	G2	S2	1B.1	BLM_S; SB_BerrySB; SB_CalBG/RSABG	Biocides, Erosion/runoff, Foot traffic/trampling, Grazing, Logging, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Wood cutting or brush clearing	Broadleafed upland forest, North Coast coniferous forest	Disturbed areas, Openings, Roadsides (sometimes)	120	800	395	2625	Yes	1974-01-01	©2004 Dean Wm. Taylor
Astragalus albens	Cushenbury milk-vetch	Fabaceae	perennial herb	Mar-Jun	FE	None	G1	S1	1B.1	SB_CalBG/RSABG	Development, Foot traffic/trampling, Grazing, Mining, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Joshua tree "woodland", Mojavean desert scrub, Pinyon and juniper woodland	Carbonate (usually), Granitic (rarely)	1095	2000	3595	6560	Yes	1974-01-01	No Photo Available
Astragalus argophyllus var. argophyllus	silver-leaved milk-vetch	Fabaceae	perennial herb	May-Jul	None	None	G5T4	S2	2B.2	BLM_S	Development, Grazing, Groundwater pumping, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter	Meadows and seeps, Playas	Alkaline (sometimes)	1240	2350	4070	7710		1980-01-01	© 2020 Steve Matson
Astragalus atratus var. mensanus	Darwin Mesa milk-vetch	Fabaceae	perennial herb	Apr-Jun	None	None	G4G5T2	S2	1B.1	BLM_S	Grazing	Great Basin scrub, Joshua tree "woodland", Pinyon and juniper woodland	Clay, Gravelly, Volcanic	1340	2315	4395	7595	Yes	1980-01-01	No Photo Available
Astragalus brauntonii	Braunton's milk-vetch	Fabaceae	perennial herb	Jan-Aug	FE	None	G2	S2	1B.1	SB_CalBG/RSABG; SB_SBBG	Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Coastal scrub, Valley and foothill grassland	Burned areas (sometimes), Carbonate, Disturbed areas (sometimes), Sandstone (usually)	4	640	15	2100	Yes	1974-01-01	© 2009 Thomas Stoughton
Astragalus cimae var. cimae	Cima milk-vetch	Fabaceae	perennial herb	Apr-May	None	None	G3T2T3	S2?	1B.2	SB_CalBG/RSABG	Foot traffic/trampling, Grazing, Mining, Other, Recreational use (non-ORV)	Great Basin scrub, Joshua tree "woodland", Pinyon and juniper woodland	Clay	890	1850	2920	6070		1974-01-01	No Photo Available
Astragalus claranus	Clara Hunt's milk-vetch	Fabaceae	annual herb	Mar-May	FE	CE	G1	S1	1B.1	SB_CalBG/RSABG	Agriculture, Development, Feral pigs, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Vandalism/dumping/litter	Chaparral (openings), Cismontane woodland, Valley and foothill grassland	Clay, Rocky, Serpentine (sometimes), Volcanic (sometimes)	75	275	245	900	Yes	1974-01-01	No Photo Available
Astragalus deanei	Dean's milk-vetch	Fabaceae	perennial herb	Feb-May	None	None	G1	S1	1B.1	BLM_S; USFS_S	Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral, Cismontane woodland, Coastal scrub, Riparian forest		75	695	245	2280	Yes	1974-01-01	No Photo Available
Astragalus douglasii var. perstrictus	Jacumba milk-vetch	Fabaceae	perennial herb	Apr-Jun	None	None	G5T3?	S2S3	1B.2	BLM_S; SB_CalBG/RSABG; SB_CRES; USFS_S	Development, Foot traffic/trampling, Landfill, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Cismontane woodland, Pinyon and juniper woodland, Riparian scrub, Valley and foothill grassland	Rocky	900	1370	2955	4495		1984-01-01	No Photo Available
Astragalus ertterae	Walker Pass milk-vetch	Fabaceae	perennial herb	Apr-May	None	None	G2	S2	1B.3	BLM_S; SB_CalBG/RSABG; USFS_S	Foot traffic/trampling, Grazing, Recreational use (non-ORV), Road/trail construction/maint.	Pinyon and juniper woodland (granitic, sandy)		1705	1900	5595	6235	Yes	1988-01-01	No Photo Available
Astragalus funereus	black milk-vetch	Fabaceae	perennial herb	Mar-May	None	None	G2	S2	1B.2	BLM_S		Mojavean desert scrub (sometimes carbonate, clay, gravelly, rocky)		1280	2100	4200	6890		1980-01-01	No Photo Available
Astragalus geyeri var. geyeri	Geyer's milk-vetch	Fabaceae	annual herb	May-Aug	None	None	G4T4	S2	2B.2		Grazing, Mining, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Chenopod scrub, Great Basin scrub	Sandy	1160	1980	3805	6495		1974-01-01	No Photo Available
Astragalus gilmanii	Gilman's milk-vetch	Fabaceae	perennial herb	May-Aug	None	None	G2	S2	1B.2	SB_CalBG/RSABG	Foot traffic/trampling, Road/trail construction/maint.	Great Basin scrub, Pinyon and juniper woodland	Gravelly (sometimes), Rocky (sometimes)	2000	3050	6560	10005		1974-01-01	No Photo Available
Astragalus insularis var. harwoodii	Harwood's milk-vetch	Fabaceae	annual herb	Jan-May	None	None	G5T4	S2	2B.2	SB_CalBG/RSABG	Development, Erosion/runoff, Grazing, Mining, Non-native plant impacts, ORV activity, Road/trail construction/maint., Vandalism/dumping/litter	Desert dunes, Mojavean desert scrub	Gravelly (sometimes), Sandy (sometimes)	0	710	0	2330		1980-01-01	No Photo Available
Astragalus jaegerianus	Lane Mountain milk-vetch	Fabaceae	perennial herb	Apr-Jun	FE	None	G2	S2	1B.1	SB_CalBG/RSABG	Development, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Vandalism/dumping/litter	Joshua tree "woodland", Mojavean desert scrub	Granitic, Gravelly (sometimes), Sandy (sometimes)	900	1200	2955	3935	Yes	1974-01-01	No Photo Available
Astragalus johannis-howellii	Long Valley milk-vetch	Fabaceae	perennial herb	Jun-Aug	None	CR	G2	S1	1B.2	BLM_S; SB_SBBG; USFS_S	Dam/Inundation, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Great Basin scrub (sandy loam)		2040	2530	6695	8300		1974-01-01	No Photo Available
Astragalus kentrophyta var. elatus	spiny-leaved milk-vetch	Fabaceae	perennial herb	Jun-Sep	None	None	G5T4	S2	2B.2		Road/trail construction/maint.	Subalpine coniferous forest (sometimes carbonate, rocky)		3000	3490	9845	11450		1974-01-01	No Photo Available
Astragalus lentiformis	lens-pod milk-vetch	Fabaceae	perennial herb	May-Jul	None	None	G2	S2	1B.2	BLM_S; USFS_S	Dam/Inundation, Development, Foot traffic/trampling, Grazing, Improper burning regime, Logging, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Great Basin scrub, Lower montane coniferous forest	Sandy, Volcanic	1460	1910	4790	6265	Yes	1974-01-01	No Photo Available
Astragalus lentiginosus var. coachellae	Coachella Valley milk-vetch	Fabaceae	annual/perennial herb	Feb-May	FE	None	G5T1	S1	1B.2	SB_CalBG/RSABG; SB_USDA	Altered flood/tidal/hydrologic regime, Biocides, Development, Foot traffic/trampling, Improper burning regime, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Vandalism/dumping/litter	Desert dunes, Sonoran desert scrub (sandy)		40	655	130	2150	Yes	1984-01-01	No Photo Available
Astragalus lentiginosus var. kernensis	Kern Plateau milk-vetch	Fabaceae	perennial herb	Jun-Jul	None	None	G5T2?	S2S3	1B.2	BLM_S; SB_CalBG/RSABG; USFS_S	Foot traffic/trampling, Grazing, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Meadows and seeps, Subalpine coniferous forest	Sandy	2240	2750	7350	9025		1980-01-01	No Photo Available
Astragalus lentiginosus var. micans	shining milk-vetch	Fabaceae	perennial herb	Mar-Jun	None	None	G5T1	S1	1B.2	SB_CalBG/RSABG; SB_USDA	Foot traffic/trampling, Non-native plant impacts, ORV activity, Recreational use (non-ORV)	Desert dunes		770	1175	2525	3855	Yes	1974-01-01	No Photo Available
Astragalus lentiginosus var. piscinensis	Fish Slough milk-vetch	Fabaceae	perennial herb	Jun-Jul	FT	None	G5T1	S1	1B.1	SB_CalBG/RSABG	Grazing, ORV activity, Other, Vandalism/dumping/litter	Playas (alkaline)		1130	1300	3710	4265	Yes	1980-01-01	No Photo Available
Astragalus lentiginosus var. sesquimetralis	Sodaville milk-vetch	Fabaceae	perennial herb	Apr-Jul	None	CE	G5T1	S1	1B.1		Altered flood/tidal/hydrologic regime, Non-native animal impacts	Meadows and seeps (alkaline)		955	975	3135	3200		1974-01-01	No Photo Available
Astragalus leucolobus	Big Bear Valley woollypod	Fabaceae	perennial herb	May-Jul	None	None	G2	S2	1B.2	BLM_S; IUCN_VU; SB_CalBG/RSABG	Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Logging, Mining, Non-native animal impacts, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Lower montane coniferous forest, Pebble (Pavement) plain, Pinyon and juniper woodland, Upper montane coniferous forest	Rocky	1100	2885	3610	9465	Yes	1974-01-01	No Photo Available
Astragalus magdalenae var. peirsonii	Peirson's milk-vetch	Fabaceae	perennial herb	Dec-Apr	FT	CE	G3G4T1	S1	1B.2	SB_CalBG/RSABG	ORV activity, Other	Desert dunes		60	225	195	740		1974-01-01	No Photo Available
Astragalus mohavensis var. hemigyrus	curved-pod milk-vetch	Fabaceae	annual herb	Apr-Jun	None	None	G3G4T2T3	S1	1B.1	BLM_S; SB_CalBG/RSABG	Mining	Joshua tree "woodland", Mojavean desert scrub	Carbonate	1250	1620	4100	5315		1988-01-01	No Photo Available
Astragalus monoensis	Mono milk-vetch	Fabaceae	perennial herb	Jun-Aug	None	CR	G2	S2	1B.2	BLM_S; SB_CalBG/RSABG; USFS_S	Development, Foot traffic/trampling, Grazing, Logging, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Great Basin scrub, Upper montane coniferous forest	Gravelly (sometimes), Sandy (sometimes)	2110	3355	6925	11010	Yes	1974-01-01	No Photo Available
Astragalus nevinii	San Clemente Island milk-vetch	Fabaceae	perennial herb	Feb-Jul	None	None	G3	S3	1B.2	SB_CalBG/RSABG; SB_CRES	Non-native plant impacts	Coastal dunes, Coastal scrub, Valley and foothill grassland		5	225	15	740	Yes	1974-01-01	No Photo Available
Astragalus oocarpus	San Diego milk-vetch	Fabaceae	perennial herb	May-Aug	None	None	G2?	S2?	1B.2	BLM_S; SB_CalBG/RSABG; SB_CRES; USFS_S	Altered flood/tidal/hydrologic regime, Development, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral (openings), Cismontane woodland		305	1524	1000	5000	Yes	1974-01-01	No Photo Available
Astragalus oophorus var. lavinii	Lavin's milk-vetch	Fabaceae	perennial herb	Jun	None	None	G4T2	S1	1B.2	BLM_S		Great Basin scrub, Pinyon and juniper woodland		2450	3050	8040	10005		1984-01-01	No Photo Available
Astragalus preussii var. laxiflorus	Lancaster milk-vetch	Fabaceae	perennial herb	Mar-May	None	None	G4T2	S1	1B.1		Development	Chenopod scrub		700	700	2295	2295		1988-01-01	No Photo Available
Astragalus preussii var. preussii	Preuss' milk-vetch	Fabaceae	perennial herb	Apr-Jun	None	None	G4T4	S1	2B.1	SB_CalBG/RSABG	Agriculture, Development, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint.	Chenopod scrub, Mojavean desert scrub	Clay	750	805	2460	2640		1988-01-01	No Photo Available
Astragalus pseudiodanthus	Tonopah milk-vetch	Fabaceae	perennial herb	May-Jun	None	None	G2Q	S2	1B.2	BLM_S; SB_CalBG/RSABG; SB_SBBG	Grazing, Road/trail construction/maint.	Great Basin scrub (stabilized dunes)		2025	2075	6645	6810		1980-01-01	No Photo Available
Astragalus pycnostachyus var. lanosissimus	Ventura Marsh milk-vetch	Fabaceae	perennial herb	(Jun)Aug-Oct	FE	CE	G2T1	S1	1B.1		Development, Foot traffic/trampling, Non-native plant impacts, Other, Over-collecting/poaching, Pollution	Coastal dunes, Coastal scrub, Marshes and swamps (edges, coastal salt, brackish)		1	35	5	115	Yes	1974-01-01	© 2007 Nicholas Jensen
Astragalus rattanii var. jepsonianus	Jepson's milk-vetch	Fabaceae	annual herb	Mar-Jun	None	None	G4T3	S3	1B.2	BLM_S; SB_UCSC	Development, Erosion/runoff, Foot traffic/trampling, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Chaparral, Cismontane woodland, Valley and foothill grassland	Serpentine (often)	295	700	970	2295	Yes	1988-01-01	No Photo Available
Astragalus ravenii	Raven's milk-vetch	Fabaceae	perennial herb	Jul-Sep	None	None	G2	S2	1B.3	USFS_S	Foot traffic/trampling, Road/trail construction/maint.	Alpine boulder and rock field, Upper montane coniferous forest	Gravelly	3355	3460	11010	11350	Yes	1974-01-01	No Photo Available
Astragalus serenoi var. shockleyi	Shockley's milk-vetch	Fabaceae	perennial herb	(Apr)May-Jul	None	None	G4T3	S3	2B.2		Erosion/runoff, Mining, Non-native plant impacts, ORV activity, Recreational use (non-ORV)	Chenopod scrub, Great Basin scrub, Pinyon and juniper woodland	Alkaline	1500	2320	4920	7610		1988-01-01	No Photo Available
Astragalus shevockii	Shevock's milk-vetch	Fabaceae	perennial herb	Jun-Jul	None	None	G2	S2	1B.3	BLM_S		Upper montane coniferous forest (granitic, sandy)		1890	1965	6200	6445	Yes	1980-01-01	No Photo Available
Astragalus anxius	Ash Valley milk-vetch	Fabaceae	perennial herb	May-Jul	None	None	G1	S2	1B.3	BLM_S; SB_UCSC; USFS_S	Foot traffic/trampling, Grazing, Logging, ORV activity, Other, Road/trail construction/maint., Wood cutting or brush clearing	Great Basin scrub, Pinyon and juniper woodland, Upper montane coniferous forest	Volcanic	1550	1645	5085	5395	Yes	1984-01-01	No Photo Available
Astragalus tener var. titi	coastal dunes milk-vetch	Fabaceae	annual herb	Mar-May	FE	CE	G2T1	S1	1B.1	SB_CalBG/RSABG	Development, Foot traffic/trampling, Military operations, Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint.	Coastal bluff scrub (sandy), Coastal dunes, Coastal prairie (mesic)	Mesic (often), Vernally Mesic (often)	1	50	5	165	Yes	1974-01-01	No Photo Available
Astragalus traskiae	Trask's milk-vetch	Fabaceae	perennial herb	Feb-Jul	None	CR	G3	S3	1B.2		Erosion/runoff, Non-native plant impacts	Coastal bluff scrub, Coastal dunes, Coastal scrub		5	245	15	805	Yes	1974-01-01	No Photo Available
Astragalus tricarinatus	triple-ribbed milk-vetch	Fabaceae	perennial herb	Feb-May	FE	None	G2	S2	1B.2	SB_CalBG/RSABG	Foot traffic/trampling, Grazing, ORV activity, Road/trail construction/maint.	Joshua tree "woodland", Sonoran desert scrub	Gravelly (sometimes), Sandy (sometimes)	450	1190	1475	3905	Yes	1974-01-01	No Photo Available
Astragalus umbraticus	Bald Mountain milk-vetch	Fabaceae	perennial herb	May-Aug	None	None	G4	S2	2B.2		Foot traffic/trampling, Logging, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Cismontane woodland, Lower montane coniferous forest	Roadsides (sometimes)	150	1250	490	4100		1974-01-01	©2013 Scot Loring
Astragalus webberi	Webber's milk-vetch	Fabaceae	perennial herb	May-Jul	None	None	G1	S1	1B.2	BLM_S; SB_UCSC; USFS_S	Logging, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Broadleafed upland forest, Lower montane coniferous forest, Meadows and seeps		731	1250	2400	4100	Yes	1974-01-01	No Photo Available
Atriplex cordulata var. cordulata	heartscale	Chenopodiaceae	annual herb	Apr-Oct	None	None	G3T2	S2	1B.2	BLM_S	Agriculture, Dam/Inundation, Development, Foot traffic/trampling, Grazing, Non-native plant impacts, Road/trail construction/maint., Waterway bank protection/maintenance	Chenopod scrub, Meadows and seeps, Valley and foothill grassland (sandy)	Alkaline (sometimes)	0	560	0	1835	Yes	1988-01-01	© 1994 Robert E. Preston, Ph.D.
Baccharis vanessae	Encinitas baccharis	Asteraceae	perennial deciduous shrub	Aug-Nov	FT	CE	G1	S1	1B.1	SB_CRES	Altered flood/tidal/hydrologic regime, Dam/Inundation, Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Insufficient population/stand size, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral (maritime), Cismontane woodland	Sandstone	60	720	195	2360	Yes	1980-01-01	No Photo Available
Balsamorhiza macrolepis	big-scale balsamroot	Asteraceae	perennial herb	Mar-Jun	None	None	G2	S2	1B.2	BLM_S; USFS_S	Development, Foot traffic/trampling, Grazing, Logging, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Cismontane woodland, Valley and foothill grassland	Serpentine (sometimes)	45	1555	150	5100	Yes	1974-01-01	©1998 Dean Wm. Taylor
Balsamorhiza sericea	silky balsamroot	Asteraceae	perennial herb	Apr-May(Jun-Jul)	None	None	G3	S3	1B.3	BLM_S; SB_BerrySB; SB_CalBG/RSABG	Improper burning regime, Logging, Other, Road/trail construction/maint.	Lower montane coniferous forest (serpentinite)		850	2130	2790	6990		1984-01-01	© 2021 Scot Loring
Bensoniella oregona	bensoniella	Saxifragaceae	perennial herb	May-Jul	None	CR	G3	S2	1B.1	SB_UCSC; USFS_S	Altered flood/tidal/hydrologic regime, Erosion/runoff, Foot traffic/trampling, Grazing, Logging, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter	Bogs and fens, Lower montane coniferous forest (openings), Meadows and seeps	Mesic	900	1400	2955	4595		1974-01-01	© 2021 Scot Loring
Bergerocactus emoryi	golden-spined cereus	Cactaceae	perennial stem	May-Jun	None	None	G2G3	S2	2B.2	IUCN_LC; SB_CalBG/RSABG	Development, Foot traffic/trampling, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint.	Chaparral, Closed-cone coniferous forest, Coastal scrub	Sandy	3	395	10	1295		1974-01-01	No Photo Available
Blennosperma bakeri	Sonoma sunshine	Asteraceae	annual herb	Mar-May	FE	CE	G1	S1	1B.1	SB_CalBG/RSABG	Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Development, Disking, Erosion/runoff, Grazing, Improper burning regime, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Valley and foothill grassland (mesic), Vernal pools		10	110	35	360	Yes	1974-01-01	No Photo Available
Blennosperma nanum var. robustum	Point Reyes blennosperma	Asteraceae	annual herb	Feb-Apr	None	CR	G4T2	S2	1B.2	SB_CalBG/RSABG	Erosion/runoff, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint.	Coastal prairie, Coastal scrub		10	145	35	475	Yes	1974-01-01	No Photo Available
Blepharidachne kingii	King's eyelash grass	Poaceae	perennial herb	May	None	None	G4	S2	2B.3		Other	Great Basin scrub (usually carbonate)		1065	2135	3495	7005		1974-01-01	No Photo Available
Bloomeria humilis	dwarf goldenstar	Themidaceae	perennial bulbiferous herb	Jun	None	CR	G1	S1	1B.2	SB_CalBG/RSABG; SB_SBBG; USFS_S	Development, Foot traffic/trampling, Non-native plant impacts, Road/trail construction/maint.	Chaparral, Coastal bluff scrub, Valley and foothill grassland		10	120	35	395	Yes	1974-01-01	No Photo Available
Botrychium crenulatum	scalloped moonwort	Ophioglossaceae	perennial rhizomatous herb	Jun-Sep	None	None	G4	S3	2B.2	USFS_S	Altered flood/tidal/hydrologic regime, Erosion/runoff, Foot traffic/trampling, Grazing, Groundwater pumping, Improper burning regime, Logging, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Bogs and fens, Lower montane coniferous forest, Marshes and swamps (freshwater), Meadows and seeps, Upper montane coniferous forest		1268	3280	4160	10760		1984-01-01	© 2016 Steve Matson
Bouteloua trifida	three-awned grama	Poaceae	perennial herb	(Apr)May-Sep	None	None	G4G5	S3	2B.3	SB_CalBG/RSABG	Mining, ORV activity	Mojavean desert scrub (carbonate, rocky)		700	2000	2295	6560		1974-01-01	No Photo Available
Brodiaea filifolia	thread-leaved brodiaea	Themidaceae	perennial bulbiferous herb	Mar-Jun	FT	CE	G2	S2	1B.1	SB_CalBG/RSABG; SB_CRES	Agriculture, Altered flood/tidal/hydrologic regime, Dam/Inundation, Development, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, Hybridization, Improper burning regime, Landfill, Military operations, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Vandalism/dumping/litter, Waterway bank protection/maintenance, Wood cutting or brush clearing	Chaparral (openings), Cismontane woodland, Coastal scrub, Playas, Valley and foothill grassland, Vernal pools	Clay (often)	25	1120	80	3675	Yes	1974-01-01	© 2016 Keir Morse
Brodiaea insignis	Kaweah brodiaea	Themidaceae	perennial bulbiferous herb	Apr-Jun	None	CE	G1	S1	1B.2	BLM_S; SB_SBBG; USFS_S	Altered flood/tidal/hydrologic regime, Development, Foot traffic/trampling, Grazing, Other, Road/trail construction/maint.	Cismontane woodland, Meadows and seeps, Valley and foothill grassland	Clay (sometimes), Granitic (sometimes)	150	1400	490	4595	Yes	1974-01-01	© 2007 Robert E. Preston, Ph.D.
Brodiaea kinkiensis	San Clemente Island brodiaea	Themidaceae	perennial bulbiferous herb	May-Jun	None	None	G2	S2	1B.2	SB_CalBG/RSABG; SB_CRES		Valley and foothill grassland (clay)		305	600	1000	1970	Yes	1974-01-01	© 2011 Neal Kramer
Brodiaea orcuttii	Orcutt's brodiaea	Themidaceae	perennial bulbiferous herb	May-Jul	None	None	G2	S2	1B.1	BLM_S; SB_CRES; USFS_S	Agriculture, Altered flood/tidal/hydrologic regime, Dam/Inundation, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Cismontane woodland, Closed-cone coniferous forest, Meadows and seeps, Valley and foothill grassland, Vernal pools	Clay, Mesic	30	1692	100	5550	Yes	1974-01-01	© 2001 Ellen Friedman & Ted Dunning
Brodiaea pallida	Chinese Camp brodiaea	Themidaceae	perennial bulbiferous herb	May-Jun	FT	CE	G1	S1	1B.1	IUCN_EN	Altered flood/tidal/hydrologic regime, Biocides, Dam/Inundation, Development, Erosion/runoff, Grazing, Road/trail construction/maint.	Cismontane woodland, Valley and foothill grassland	Serpentine (often)	165	385	540	1265	Yes	1974-01-01	© 2014 Robert E. Preston, Ph.D.
Bursera microphylla	little-leaf elephant tree	Burseraceae	perennial deciduous tree	Jun-Jul	None	None	G4	S2	2B.3	IUCN_LC; SB_CalBG/RSABG	Foot traffic/trampling, Other, Recreational use (non-ORV)	Sonoran desert scrub (rocky)		200	700	655	2295		1980-01-01	No Photo Available
Calamagrostis crassiglumis	Thurber's reed grass	Poaceae	perennial rhizomatous herb	May-Aug	None	None	G5Q	S2	2B.1		Foot traffic/trampling, Grazing, Non-native plant impacts, Road/trail construction/maint.	Coastal scrub (mesic), Marshes and swamps (freshwater)		10	60	35	195		1980-01-01	No Photo Available
Clinopodium chandleri	San Miguel savory	Lamiaceae	perennial shrub	Mar-Jul	None	None	G2G3	S2	1B.2	BLM_S; SB_CRES; USFS_S	Biocides, Dam/Inundation, Erosion/runoff, Foot traffic/trampling, Improper burning regime, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Chaparral, Cismontane woodland, Coastal scrub, Riparian woodland, Valley and foothill grassland	Gabbroic (sometimes), Rocky (sometimes)	120	1075	395	3525		1974-01-01	No Photo Available
Calliandra eriophylla	pink fairy-duster	Fabaceae	perennial deciduous shrub	Jan-Mar	None	None	G5	S3	2B.3	SB_CalBG/RSABG	Mining, ORV activity, Other, Vandalism/dumping/litter	Sonoran desert scrub (sandy, rocky)		120	1500	395	4920		1980-01-01	No Photo Available
Calochortus clavatus var. recurvifolius	Arroyo de la Cruz mariposa-lily	Liliaceae	perennial bulbiferous herb	Jun-Jul	None	None	G4T1	S1	1B.2		Erosion/runoff, Grazing	Chaparral (maritime), Coastal bluff scrub, Coastal prairie, Lower montane coniferous forest		10	120	35	395	Yes	1974-01-01	No Photo Available
Eremothera boothii ssp. boothii	Booth's evening-primrose	Onagraceae	annual herb	Apr-Sep	None	None	G5T4	S3	2B.3		Development, Foot traffic/trampling, Grazing, ORV activity, Other, Road/trail construction/maint.	Joshua tree "woodland", Pinyon and juniper woodland		815	2400	2675	7875		1980-01-01	No Photo Available
Camissoniopsis guadalupensis ssp. clementina	San Clemente Island evening-primrose	Onagraceae	annual herb	Apr-Jun	None	None	G3T2	S2	1B.2	SB_CalBG/RSABG; SB_CRES	Development, Non-native plant impacts	Coastal dunes		0	30	0	100	Yes	1974-01-01	No Photo Available
Camissoniopsis hardhamiae	Hardham's evening-primrose	Onagraceae	annual herb	Mar-May	None	None	G2	S2	1B.2	BLM_S; USFS_S	Biocides, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint.	Chaparral, Cismontane woodland	Burned areas (sometimes), Carbonate, Disturbed areas (sometimes), Sandy	140	945	460	3100	Yes	1980-01-01	No Photo Available
Camissonia integrifolia	Kern River evening-primrose	Onagraceae	annual herb	(Apr)May	None	None	G2	S2	1B.3	BLM_S	Foot traffic/trampling, Road/trail construction/maint.	Chaparral, Mojavean desert scrub	Openings, Sandy	700	1200	2295	3935	Yes	1980-01-01	© 2015 John Game
Carex davyi	Davy's sedge	Cyperaceae	perennial herb	May-Aug	None	None	G3	S3	1B.3	SB_UCSC	Logging, ORV activity	Subalpine coniferous forest, Upper montane coniferous forest		1500	3200	4920	10500		1974-01-01	No Photo Available
Carex duriuscula	spikerush sedge	Cyperaceae	perennial rhizomatous herb	Jul-Aug	None	None	G5	S2	2B.3			Great Basin scrub, Subalpine coniferous forest		3500	4100	11485	13450		1980-01-01	No Photo Available
Carex halliana	Oregon sedge	Cyperaceae	perennial rhizomatous herb	(May)Jul-Sep	None	None	G4G5	S2	2B.3		Foot traffic/trampling, Improper burning regime, Logging, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Meadows and seeps, Subalpine coniferous forest, Upper montane coniferous forest		1370	2105	4495	6905		1980-01-01	©2010 Keir Morse
Carex lasiocarpa	woolly-fruited sedge	Cyperaceae	perennial rhizomatous herb	Jun-Jul	None	None	G5	S2	2B.3	IUCN_LC	Altered flood/tidal/hydrologic regime, Grazing, Logging, Recreational use (non-ORV)	Bogs and fens, Marshes and swamps (freshwater, lake margins)		1700	2100	5580	6890		1980-01-01	© 2011 Sierra Pacific Industries
Carex obispoensis	San Luis Obispo sedge	Cyperaceae	perennial cespitose herb	Apr-Jun	None	None	G3?	S3?	1B.2	BLM_S; SB_SBBG; USFS_S	Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Feral pigs, Grazing, Improper burning regime, Military operations, Mining, Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Closed-cone coniferous forest, Coastal prairie, Coastal scrub, Valley and foothill grassland	Clay (often), Gabbroic (sometimes), Seeps (often), Serpentine (often)	10	820	35	2690	Yes	1974-01-01	No Photo Available
Dudleya brevifolia	short-leaved dudleya	Crassulaceae	perennial herb	Apr-May	None	CE	G1	S1	1B.1	SB_CalBG/RSABG; SB_CRES	Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Foot traffic/trampling, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Chaparral (maritime, openings), Coastal scrub	Sandstone	30	250	100	820	Yes	1980-01-01	No Photo Available
Dudleya candelabrum	candleholder dudleya	Crassulaceae	perennial herb	Apr-Jul	None	None	G3	S3	1B.2		Erosion/runoff	Chaparral, Closed-cone coniferous forest, Coastal scrub	Rocky	5	610	15	2000	Yes	1974-01-01	No Photo Available
Dudleya cymosa ssp. crebrifolia	San Gabriel River dudleya	Crassulaceae	perennial herb	Apr-Jul	None	None	G5T2	S2	1B.2	SB_CalBG/RSABG; USFS_S	Erosion/runoff, Road/trail construction/maint.	Chaparral (granitic)		275	457	900	1500	Yes	1988-01-01	No Photo Available
Dudleya cymosa ssp. marcescens	marcescent dudleya	Crassulaceae	perennial herb	Apr-Jul	FT	CR	G5T2	S2	1B.2	SB_CalBG/RSABG; SB_SBBG	Development, Foot traffic/trampling, Improper burning regime, Non-native plant impacts, Over-collecting/poaching, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral	Rocky, Volcanic	150	520	490	1705	Yes	1974-01-01	No Photo Available
Dudleya cymosa ssp. ovatifolia	Santa Monica dudleya	Crassulaceae	perennial herb	Mar-Jun	FT	None	G5T1	S1	1B.1	SB_CalBG/RSABG; SB_SBBG	Improper burning regime, Non-native plant impacts, Recreational use (non-ORV), Vandalism/dumping/litter	Chaparral, Coastal scrub	Rocky, Volcanic (sometimes)	150	1675	490	5495	Yes	1974-01-01	No Photo Available
Dudleya densiflora	San Gabriel Mountains dudleya	Crassulaceae	perennial herb	Mar-Jul	None	None	G2	S2	1B.1	SB_CalBG/RSABG; USFS_S	Improper burning regime, Mining, Over-collecting/poaching, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral, Cismontane woodland, Coastal scrub, Lower montane coniferous forest, Riparian woodland	Granitic	244	610	800	2000	Yes	1974-01-01	No Photo Available
Dudleya multicaulis	many-stemmed dudleya	Crassulaceae	perennial herb	Apr-Jul	None	None	G2	S2	1B.2	BLM_S; SB_CalBG/RSABG; USFS_S	Agriculture, Development, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Landfill, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Coastal scrub, Valley and foothill grassland	Clay (often)	15	790	50	2590	Yes	1974-01-01	No Photo Available
Dudleya nesiotica	Santa Cruz Island dudleya	Crassulaceae	perennial herb	Apr-Jun	FD	CR	G1	S1	1B.1	SB_CalBG/RSABG; SB_SBBG	Erosion/runoff, Non-native plant impacts, Road/trail construction/maint.	Coastal bluff scrub, Coastal scrub	Clay, Gravelly (sometimes), Rocky (sometimes)	10	50	35	165	Yes	1974-01-01	No Photo Available
Dudleya parva	Conejo dudleya	Crassulaceae	perennial herb	May-Jun	FT	None	G1	S1	1B.2	SB_CalBG/RSABG	Agriculture, Development, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Recreational use (non-ORV)	Coastal scrub, Valley and foothill grassland	Clay (sometimes), Gravelly (sometimes), Rocky (sometimes), Volcanic (sometimes)	60	450	195	1475	Yes	1974-01-01	No Photo Available
Hesperolinon adenophyllum	glandular western flax	Linaceae	annual herb	May-Aug	None	None	G2G3	S2S3	1B.2	BLM_S	Biocides, Development, Erosion/runoff, Grazing, Logging, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter	Chaparral, Cismontane woodland, Valley and foothill grassland	Serpentine (usually)	150	1315	490	4315	Yes	1974-01-01	© 2002 John Game
Hesperolinon bicarpellatum	two-carpellate western flax	Linaceae	annual herb	(Apr)May-Jul	None	None	G2	S2	1B.2	BLM_S; SB_UCSC	Development, Erosion/runoff, Grazing, Other, Road/trail construction/maint.	Chaparral (serpentinite)		60	1005	195	3295	Yes	1974-01-01	© 2016 John Doyen
Hesperolinon breweri	Brewer's western flax	Linaceae	annual herb	May-Jul	None	None	G2	S2	1B.2	BLM_S	Dam/Inundation, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Landfill, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral, Cismontane woodland, Valley and foothill grassland	Serpentine (usually)	30	945	100	3100	Yes	1974-01-01	© 2014 Neal Kramer
Hesperolinon congestum	Marin western flax	Linaceae	annual herb	Apr-Jul	FT	CT	G1	S1	1B.1	SB_CalBG/RSABG; SB_UCBG	Biocides, Dam/Inundation, Development, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Chaparral, Valley and foothill grassland	Serpentine	5	370	15	1215	Yes	1974-01-01	© 2009 Neal Kramer
Hesperolinon didymocarpum	Lake County western flax	Linaceae	annual herb	May-Jul	None	CE	G1	S1	1B.2	BLM_S; SB_UCSC	Dam/Inundation, Erosion/runoff, Grazing, Other, Recreational use (non-ORV)	Chaparral, Cismontane woodland, Valley and foothill grassland	Serpentine	330	365	1085	1200	Yes	1974-01-01	© 2018 Aaron Arthur
Hesperolinon drymarioides	drymaria-like western flax	Linaceae	annual herb	May-Aug	None	None	G2	S2	1B.2	BLM_S; USFS_S	Development, Mining, ORV activity, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Cismontane woodland, Closed-cone coniferous forest, Valley and foothill grassland	Serpentine	100	1130	330	3710	Yes	1974-01-01	© Niall McCarten and CNPS
Lomatium congdonii	Congdon's lomatium	Apiaceae	perennial herb	Mar-Jun	None	None	G2	S2	1B.2	BLM_S; SB_SBBG	Biocides, Erosion/runoff, Grazing, Mining, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Cismontane woodland	Serpentine	300	2100	985	6890	Yes	1974-01-01	No Photo Available
Lomatium insulare	San Nicolas Island lomatium	Apiaceae	perennial herb	Jan-Apr(Jun)	None	None	G3	S2S3	1B.2	SB_CalBG/RSABG		Coastal bluff scrub (sandy)		15	800	50	2625		1974-01-01	No Photo Available
Lomatium martindalei	Coast Range lomatium	Apiaceae	perennial herb	May-Jun(Aug)	None	None	G5	S2	2B.3		Logging	Coastal bluff scrub, Lower montane coniferous forest, Meadows and seeps		240	3000	785	9845		1980-01-01	©2014 Barry Rice
Senna covesii	Cove's cassia	Fabaceae	perennial herb	Mar-Jun(Aug)	None	None	G5	S3	2B.2	SB_CalBG/RSABG	Erosion/runoff, Mining, ORV activity, Other, Road/trail construction/maint.	Sonoran desert scrub	Dry, Sandy, Slopes, Washes	225	1295	740	4250		1980-01-01	No Photo Available
Castela emoryi	Emory's crucifixion-thorn	Simaroubaceae	perennial deciduous shrub	(Apr)Jun-Jul(Sep-Oct)	None	None	G3G4	S2S3	2B.2	SB_CalBG/RSABG	Development, Foot traffic/trampling, Grazing, Military operations, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Mojavean desert scrub, Playas, Sonoran desert scrub	Gravelly	90	725	295	2380		1974-01-01	No Photo Available
Castilleja cinerea	ash-gray paintbrush	Orobanchaceae	perennial herb (hemiparasitic)	Jun-Aug	FT	None	G1G2	S1S2	1B.2	SB_CalBG/RSABG	Development, Erosion/runoff, Foot traffic/trampling, Grazing, Mining, Non-native animal impacts, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Meadows and seeps, Mojavean desert scrub, Pebble (Pavement) plain, Pinyon and juniper woodland, Upper montane coniferous forest (clay, openings)		1800	2960	5905	9710	Yes	1974-01-01	No Photo Available
Castilleja elata	Siskiyou paintbrush	Orobanchaceae	perennial herb (hemiparasitic)	May-Aug	None	None	G3	S2S3	2B.2		Foot traffic/trampling, Logging, Mining, Other, Road/trail construction/maint.	Bogs and fens, Lower montane coniferous forest (seeps)	Serpentine (often)	0	1750	0	5740		1980-01-01	© 2021 Scot Loring
Castilleja gleasoni	Mt. Gleason paintbrush	Orobanchaceae	perennial herb (hemiparasitic)	May-Jun(Sep)	None	CR	G2	S2	1B.2	BLM_S; SB_CalBG/RSABG; USFS_S	Development, Foot traffic/trampling, Improper burning regime, Logging, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Lower montane coniferous forest, Pinyon and juniper woodland	Granitic	1160	2170	3805	7120	Yes	1974-01-01	No Photo Available
Castilleja grisea	San Clemente Island paintbrush	Orobanchaceae	perennial herb (hemiparasitic)	Feb-Aug(Dec)	FD	CE	G3	S3	1B.3	SB_CalBG/RSABG; SB_SBBG	Erosion/runoff, Improper burning regime	Coastal bluff scrub, Coastal scrub	Rocky	10	535	35	1755	Yes	1974-01-01	© 2014 John Game
Castilleja hololeuca	island white-felted paintbrush	Orobanchaceae	perennial herb (hemiparasitic)	Feb-Sep	None	None	G3	S3	1B.2			Chaparral, Closed-cone coniferous forest, Coastal scrub	Rocky	20	365	65	1200	Yes	1980-01-01	Keir Morse
Castilleja mendocinensis	Mendocino Coast paintbrush	Orobanchaceae	perennial herb (hemiparasitic)	Apr-Aug	None	None	G2	S2	1B.2	BLM_S; SB_UCSC	Development, Erosion/runoff, Foot traffic/trampling, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Closed-cone coniferous forest, Coastal bluff scrub, Coastal dunes, Coastal prairie, Coastal scrub		0	160	0	525		1974-01-01	©2015 John Doyen
Castilleja mollis	soft-leaved paintbrush	Orobanchaceae	perennial herb (hemiparasitic)	Apr-Aug	FE	None	G2	S2	1B.1	SB_SBBG		Coastal bluff scrub, Coastal dunes		5	20	15	65	Yes	1974-01-01	No Photo Available
Castilleja affinis var. neglecta	Tiburon paintbrush	Orobanchaceae	perennial herb (hemiparasitic)	Apr-Jun	FE	CT	G4G5T1T2	S1S2	1B.2	SB_CalBG/RSABG; SB_UCBG	Development, Feral pigs, Foot traffic/trampling, Grazing, Landfill, Mining, Non-native plant impacts, ORV activity, Other	Valley and foothill grassland (serpentinite)		60	400	195	1310	Yes	1974-01-01	No Photo Available
Castilleja schizotricha	split-hair paintbrush	Orobanchaceae	perennial herb (hemiparasitic)	Jul-Aug	None	None	G4	S2S3	1B.3	SB_BerrySB		Upper montane coniferous forest	Carbonate (often), Decomposed granitic, Serpentine (often)	1500	2300	4920	7545		1984-01-01	© 2014 Scot Loring
Caulanthus amplexicaulis var. barbarae	Santa Barbara jewelflower	Brassicaceae	annual herb	May-Jul	None	None	G4T2	S2	1B.1	USFS_S	Erosion/runoff, Grazing	Chaparral, Cismontane woodland, Closed-cone coniferous forest	Serpentine	470	1220	1540	4005	Yes	1974-01-01	© 2017 John B Moule
Caulanthus californicus	California jewelflower	Brassicaceae	annual herb	Feb-May	FE	CE	G1	S1	1B.1	SB_CalBG/RSABG; SB_SBBG; SB_UCBG	Agriculture, Development, Grazing, Insufficient population/stand size, Mining, Non-native plant impacts, Other	Chenopod scrub, Pinyon and juniper woodland, Valley and foothill grassland	Sandy	61	1000	200	3280	Yes	1984-01-01	No Photo Available
Hesperidanthus jaegeri	Jaeger's hesperidanthus	Brassicaceae	perennial herb	May-Jul	None	None	G2	S2	1B.2	BLM_S; SB_CalBG/RSABG; USFS_S	Mining, Non-native animal impacts, Non-native plant impacts, ORV activity, Recreational use (non-ORV)	Great Basin scrub, Pinyon and juniper woodland, Subalpine coniferous forest	Carbonate, Rocky	2135	2800	7005	9185	Yes	1974-01-01	© 2011 Steve Matson
Ceanothus confusus	Rincon Ridge ceanothus	Rhamnaceae	perennial evergreen shrub	Feb-Jun	None	None	G1	S1	1B.1	BLM_S; SB_SBBG	Agriculture, Development, Grazing, Logging, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Cismontane woodland, Closed-cone coniferous forest	Serpentine (sometimes), Volcanic (sometimes)	75	1065	245	3495	Yes	1980-01-01	© 2012 Jake Ruygt
Ceanothus cyaneus	Lakeside ceanothus	Rhamnaceae	perennial evergreen shrub	Apr-Jun	None	None	G2	S2	1B.2	BLM_S; SB_CalBG/RSABG; SB_CRES; USFS_S	Development, Erosion/runoff, Non-native plant impacts, Road/trail construction/maint.	Chaparral, Closed-cone coniferous forest		235	755	770	2475		1974-01-01	No Photo Available
Ceanothus divergens	Calistoga ceanothus	Rhamnaceae	perennial evergreen shrub	Feb-Apr	None	None	G2	S2	1B.2	BLM_S; SB_UCSC	Agriculture, Development, Erosion/runoff, Foot traffic/trampling, Improper burning regime, Other, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral (rocky, serpentinite, volcanic)		170	950	560	3115	Yes	1974-01-01	No Photo Available
Ceanothus ferrisiae	Coyote ceanothus	Rhamnaceae	perennial evergreen shrub	Jan-May	FE	None	G1	S1	1B.1	SB_CalBG/RSABG; SB_SBBG	Development, Grazing, Improper burning regime	Chaparral, Coastal scrub, Valley and foothill grassland	Serpentine	120	460	395	1510	Yes	1974-01-01	No Photo Available
Ceanothus foliosus var. vineatus	Vine Hill ceanothus	Rhamnaceae	perennial evergreen shrub	Mar-May	None	None	G3T1	S1	1B.1		Other, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral		45	305	150	1000	Yes	1988-01-01	© 2013 Terry Gosliner
Ceanothus gloriosus var. porrectus	Mt. Vision ceanothus	Rhamnaceae	perennial evergreen shrub	Feb-May	None	None	G4T2	S2	1B.3	SB_CalBG/RSABG	Erosion/runoff, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, Other, Road/trail construction/maint., Vandalism/dumping/litter	Closed-cone coniferous forest, Coastal prairie, Coastal scrub, Valley and foothill grassland		25	305	80	1000	Yes	1974-01-01	No Photo Available
Ceanothus hearstiorum	Hearsts' ceanothus	Rhamnaceae	perennial evergreen shrub	Mar-Apr	None	CR	G1G2	S1S2	1B.2		Development, Foot traffic/trampling, Grazing, Improper burning regime, Other	Chaparral (maritime), Coastal prairie, Coastal scrub		75	245	245	805	Yes	1974-01-01	No Photo Available
Aristocapsa insignis	Indian Valley spineflower	Polygonaceae	annual herb	May-Sep	None	None	G1	S1	1B.2	BLM_S	Dam/Inundation	Cismontane woodland (sandy)		300	600	985	1970	Yes	1980-01-01	No Photo Available
Dodecahema leptoceras	slender-horned spineflower	Polygonaceae	annual herb	Apr-Jun	FE	CE	G1	S1	1B.1	SB_CalBG/RSABG	Altered flood/tidal/hydrologic regime, Biocides, Dam/Inundation, Development, Erosion/runoff, Foot traffic/trampling, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Chaparral, Cismontane woodland, Coastal scrub (alluvial fans)	Sandy	200	760	655	2495	Yes	1980-01-01	No Photo Available
Cercocarpus traskiae	Catalina Island mountain-mahogany	Rosaceae	perennial evergreen shrub	Mar-May	FE	CE	G1	S1	1B.1	IUCN_CR; SB_CalBG/RSABG; SB_CRES	Erosion/runoff, Grazing, Hybridization, Insufficient population/stand size, Other	Chaparral, Coastal scrub	Gabbroic, Rocky	100	250	330	820	Yes	1974-01-01	© 2021 Zoya Akulova
Carnegiea gigantea	saguaro	Cactaceae	perennial stem	May-Jun	None	None	G5	S1	2B.2	IUCN_LC; SB_CalBG/RSABG	Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Non-native animal impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Sonoran desert scrub (rocky)		50	1500	165	4920		1984-01-01	No Photo Available
Chaenactis parishii	Parish's chaenactis	Asteraceae	perennial herb	May-Jul	None	None	G3G4	S3	1B.3	BLM_S; SB_CRES	Grazing, Other, Road/trail construction/maint.	Chaparral (rocky)		1300	2500	4265	8205		1974-01-01	No Photo Available
Chaenactis suffrutescens	Shasta chaenactis	Asteraceae	perennial herb	May-Sep	None	None	G2G3	S2S3	1B.3	BLM_S; SB_BerrySB; USFS_S	Altered flood/tidal/hydrologic regime, Dam/Inundation, Development, Erosion/runoff, Grazing, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Lower montane coniferous forest, Upper montane coniferous forest	Sandy, Serpentine	750	2800	2460	9185		1974-01-01	© 2015 Steve Matson
Euphorbia arizonica	Arizona spurge	Euphorbiaceae	perennial herb	Mar-Apr	None	None	G5	S3	2B.3		Foot traffic/trampling	Sonoran desert scrub (sandy)		50	300	165	985		1980-01-01	No Photo Available
Euphorbia hooveri	Hoover's spurge	Euphorbiaceae	annual herb	(May-Jun)Jul-Sep(Oct)	FT	None	G1	S1	1B.2		Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Development, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Recreational use (non-ORV), Surface water diversion	Vernal pools		25	250	80	820	Yes	1974-01-01	© 2020 Neal Kramer
Euphorbia ocellata ssp. rattanii	Stony Creek spurge	Euphorbiaceae	annual herb	May-Oct	None	None	G4T2?	S2?	1B.2	BLM_S	Altered flood/tidal/hydrologic regime, Development, Foot traffic/trampling, Grazing, Mining, ORV activity, Other, Recreational use (non-ORV)	Chaparral, Riparian scrub (streambanks), Valley and foothill grassland (sandy, rocky)		65	800	215	2625	Yes	1980-01-01	No Photo Available
Euphorbia platysperma	flat-seeded spurge	Euphorbiaceae	annual herb	Feb-Sep	None	None	G3	S1	1B.2	BLM_S; SB_CalBG/RSABG		Desert dunes, Sonoran desert scrub (sandy)		65	100	215	330		1980-01-01	No Photo Available
Astrolepis cochisensis ssp. cochisensis	scaly cloak fern	Pteridaceae	perennial rhizomatous herb	Apr-Oct	None	None	G5?T4	S2	2B.3	SB_CalBG/RSABG	Development, Erosion/runoff, Non-native plant impacts, Other, Road/trail construction/maint.	Joshua tree "woodland", Pinyon and juniper woodland	Carbonate	900	1800	2955	5905		1994-01-01	No Photo Available
Argyrochosma limitanea ssp. limitanea	southwestern false cloak-fern	Pteridaceae	perennial rhizomatous herb	Apr-Oct	None	None	G4G5T3T4	S1	2B.1			Pinyon and juniper woodland (carbonate, rocky)		1800	1800	5905	5905		1984-01-01	No Photo Available
Myriopteris wootonii	Wooton's lace fern	Pteridaceae	perennial rhizomatous herb	May-Oct	None	None	G5	S2	2B.3			Joshua tree "woodland", Pinyon and juniper woodland	Rocky	1600	1900	5250	6235		1980-01-01	© 2019 Zoya Akulova
Chlorogalum grandiflorum	Red Hills soaproot	Agavaceae	perennial bulbiferous herb	(Apr)May-Jun	None	None	G3	S3	1B.2	BLM_S; SB_SBBG	Biocides, Development, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, Logging, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Cismontane woodland, Lower montane coniferous forest	Gabbroic, Serpentine	245	1690	805	5545	Yes	1974-01-01	No Photo Available
Hooveria purpurea var. purpurea	Santa Lucia purple amole	Agavaceae	perennial bulbiferous herb	Apr-Jun	FT	None	G2T2	S2	1B.1	SB_SBBG	Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint.	Chaparral, Cismontane woodland, Valley and foothill grassland	Clay, Gravelly	205	385	675	1265	Yes	1974-01-01	© 2006 Aaron Schusteff
Hooveria purpurea var. reducta	Camatta Canyon amole	Agavaceae	perennial bulbiferous herb	Apr-May	FT	CR	G2T1	S1	1B.1	SB_SBBG	Agriculture, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint.	Cismontane woodland, Valley and foothill grassland		305	630	1000	2065	Yes	1974-01-01	© 2017 John B Moule
Chorizanthe blakleyi	Blakley's spineflower	Polygonaceae	annual herb	Apr-Jun	None	None	G2	S2	1B.3	BLM_S; USFS_S	Foot traffic/trampling, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral, Pinyon and juniper woodland		600	1600	1970	5250	Yes	1974-01-01	No Photo Available
Chorizanthe breweri	Brewer's spineflower	Polygonaceae	annual herb	Apr-Aug	None	None	G3	S3	1B.3	BLM_S; SB_SBBG; USFS_S	Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Chaparral, Cismontane woodland, Closed-cone coniferous forest, Coastal scrub	Gravelly (sometimes), Rocky (sometimes), Serpentine	45	800	150	2625	Yes	1980-01-01	No Photo Available
Chorizanthe howellii	Howell's spineflower	Polygonaceae	annual herb	May-Jul	FE	CT	G1	S1	1B.2		Development, Erosion/runoff, Foot traffic/trampling, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Coastal dunes, Coastal prairie, Coastal scrub	Disturbed areas (often), Sandy	0	45	0	150	Yes	1980-01-01	No Photo Available
Chorizanthe orcuttiana	Orcutt's spineflower	Polygonaceae	annual herb	Mar-May	FE	CE	G1	S1	1B.1	SB_CalBG/RSABG	Development, Erosion/runoff, Foot traffic/trampling, Improper burning regime, Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral (maritime), Closed-cone coniferous forest, Coastal scrub	Openings, Sandy	3	125	10	410	Yes	1980-01-01	No Photo Available
Chorizanthe parryi var. fernandina	San Fernando Valley spineflower	Polygonaceae	annual herb	Apr-Jul	None	CE	G3T1	S1	1B.1	SB_CalBG/RSABG; USFS_S	Agriculture, Development, Erosion/runoff, Grazing, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter	Coastal scrub (sandy), Valley and foothill grassland		150	1220	490	4005	Yes	1974-01-01	No Photo Available
Chorizanthe pungens var. pungens	Monterey spineflower	Polygonaceae	annual herb	Apr-Jun(Jul-Aug)	FT	None	G2T2	S2	1B.2	SB_SBBG; SB_UCBG	Agriculture, Biocides, Development, Erosion/runoff, Foot traffic/trampling, Improper burning regime, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral (maritime), Cismontane woodland, Coastal dunes, Coastal scrub, Valley and foothill grassland	Sandy	3	450	10	1475	Yes	1980-01-01	No Photo Available
Chorizanthe rectispina	straight-awned spineflower	Polygonaceae	annual herb	Apr-Jul	None	None	G2	S2	1B.2	BLM_S; SB_SBBG; USFS_S	Agriculture, Biocides, Development, Disking, Grazing, Improper burning regime, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral, Cismontane woodland, Coastal scrub		85	1035	280	3395	Yes	1974-01-01	© 1982 California Native Plant Society
Chorizanthe robusta var. robusta	robust spineflower	Polygonaceae	annual herb	Apr-Sep	FE	None	G2T1	S1	1B.1		Development, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Chaparral (maritime), Cismontane woodland (openings), Coastal dunes, Coastal scrub	Gravelly (sometimes), Sandy (sometimes)	3	300	10	985	Yes	1980-01-01	No Photo Available
Chorizanthe valida	Sonoma spineflower	Polygonaceae	annual herb	Jun-Aug	FE	CE	G1	S1	1B.1	SB_CalBG/RSABG	Grazing, Non-native plant impacts, Other, Road/trail construction/maint.	Coastal prairie (sandy)		10	305	35	1000	Yes	1974-01-01	No Photo Available
Cirsium andrewsii	Franciscan thistle	Asteraceae	perennial herb	Mar-Jul	None	None	G3	S3	1B.2	SB_CalBG/RSABG	Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Other	Broadleafed upland forest, Coastal bluff scrub, Coastal prairie, Coastal scrub	Mesic, Serpentine (sometimes)	0	150	0	490	Yes	1974-01-01	No Photo Available
Cirsium fontinale var. campylon	Mt. Hamilton thistle	Asteraceae	perennial herb	(Feb)Apr-Oct	None	None	G2T2	S2	1B.2	BLM_S; SB_CalBG/RSABG	Biocides, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Landfill, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Waterway bank protection/maintenance, Wood cutting or brush clearing	Chaparral, Cismontane woodland, Valley and foothill grassland	Seeps, Serpentine	100	890	330	2920	Yes	1974-01-01	No Photo Available
Cirsium ciliolatum	Ashland thistle	Asteraceae	perennial herb	Jun-Aug	None	CE	G3	S1	2B.1	BLM_S	Biocides, Grazing, Non-native plant impacts, Other, Road/trail construction/maint.	Cismontane woodland, Valley and foothill grassland		800	1400	2625	4595		1980-01-01	© 2021 Scot Loring
Cirsium crassicaule	slough thistle	Asteraceae	annual/perennial herb	May-Aug	None	None	G1	S1	1B.1	BLM_S	Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Dam/Inundation, Development, Grazing, Improper burning regime, Non-native plant impacts, Road/trail construction/maint., Surface water diversion, Waterway bank protection/maintenance	Chenopod scrub, Marshes and swamps (sloughs), Riparian scrub		3	100	10	330	Yes	1974-01-01	No Photo Available
Cirsium fontinale var. fontinale	fountain thistle	Asteraceae	perennial herb	(Apr)May-Oct	FE	CE	G2T1	S1	1B.1	SB_CalBG/RSABG	Altered flood/tidal/hydrologic regime, Development, Foot traffic/trampling, Hybridization, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Chaparral (openings), Cismontane woodland, Meadows and seeps, Valley and foothill grassland	Seeps, Serpentine	45	175	150	575	Yes	1974-01-01	No Photo Available
Cirsium fontinale var. obispoense	Chorro Creek bog thistle	Asteraceae	perennial herb	Feb-Jul(Aug-Sep)	FE	CE	G2T2	S2	1B.2	SB_CalBG/RSABG; SB_SBBG	Agriculture, Biocides, Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Non-native plant impacts, Other, Road/trail construction/maint., Surface water diversion	Chaparral, Cismontane woodland, Coastal scrub, Valley and foothill grassland	Seeps, Serpentine	35	385	115	1265	Yes	1974-01-01	No Photo Available
Cirsium hydrophilum var. hydrophilum	Suisun thistle	Asteraceae	perennial herb	Jun-Sep	FE	None	G2T1	S1	1B.1	SB_CalBG/RSABG	Altered flood/tidal/hydrologic regime, Feral pigs, Foot traffic/trampling, Grazing, Hybridization, Improper burning regime, Non-native animal impacts, Non-native plant impacts	Marshes and swamps (salt)		0	1	0	5	Yes	1974-01-01	No Photo Available
Cirsium hydrophilum var. vaseyi	Mt. Tamalpais thistle	Asteraceae	perennial herb	May-Aug	None	None	G2T1	S1	1B.2	SB_CalBG/RSABG	Development, Foot traffic/trampling, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint.	Broadleafed upland forest, Chaparral, Meadows and seeps	Seeps, Serpentine	240	620	785	2035	Yes	1974-01-01	No Photo Available
Cirsium scariosum var. loncholepis	La Graciosa thistle	Asteraceae	perennial herb	May-Aug	FE	CT	G5T1	S1	1B.1	SB_CalBG/RSABG; SB_SBBG	Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Development, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Cismontane woodland, Coastal dunes, Coastal scrub, Marshes and swamps (brackish), Valley and foothill grassland	Mesic, Sandy	4	220	15	720	Yes	1974-01-01	No Photo Available
Cirsium occidentale var. compactum	compact cobwebby thistle	Asteraceae	perennial herb	Apr-Jun	None	None	G3G4T2	S2	1B.2	BLM_S	Development, Erosion/runoff, Grazing, Non-native plant impacts, Road/trail construction/maint.	Chaparral, Coastal dunes, Coastal prairie, Coastal scrub		5	150	15	490	Yes	1974-01-01	No Photo Available
Cirsium rhothophilum	surf thistle	Asteraceae	perennial herb	Apr-Jun	None	CT	G1	S1	1B.2	BLM_S; SB_SBBG	Development, Feral pigs, Foot traffic/trampling, Grazing, Insufficient population/stand size, Military operations, Mining, Non-native plant impacts, ORV activity, Other	Coastal bluff scrub, Coastal dunes		3	60	10	195	Yes	1974-01-01	No Photo Available
Clarkia amoena ssp. whitneyi	Whitney's farewell-to-spring	Onagraceae	annual herb	Jun-Aug	None	None	G5T1	S1	1B.1	BLM_S; SB_CalBG/RSABG; SB_UCBG	Agriculture, Development, Grazing	Coastal bluff scrub, Coastal scrub		10	100	35	330	Yes	1980-01-01	No Photo Available
Clarkia australis	Small's southern clarkia	Onagraceae	annual herb	May-Aug	None	None	G2	S2	1B.2	BLM_S; USFS_S	Biocides, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Logging, Other, Road/trail construction/maint., Wood cutting or brush clearing	Cismontane woodland, Lower montane coniferous forest		800	2075	2625	6810	Yes	1980-01-01	No Photo Available
Clarkia biloba ssp. australis	Mariposa clarkia	Onagraceae	annual herb	Apr-Jul	None	None	G4G5T3	S3	1B.2	BLM_S; SB_CalBG/RSABG; SB_SBBG; USFS_S	Altered flood/tidal/hydrologic regime, Biocides, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing	Chaparral, Cismontane woodland	Serpentine