CNPS Rare Plant Inventory

435 matches found. Click on scientific name for details

Search Criteria: Scientific Name starts with A

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
Amsinckia furcata	forked fiddleneck	Boraginaceae	annual herb	Feb-May	None	None	G4	S4	4.2	SB_CalBG/RSABG; SB_SBBG; SB_UCBG		Cismontane woodland, Valley and foothill grassland		50	1000	165	3280	Yes	1974-01-01	© 2017 Keir Morse
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
Antennaria lanata									CBR										2004-01-01	No Photo Available
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 obispoensis	Bishop manzanita	Ericaceae	perennial evergreen shrub	Feb-Jun	None	None	G3	S3	4.3	SB_UCSC; USFS_S		Chaparral, Cismontane woodland, Closed-cone coniferous forest	Rocky, Serpentine	150	1005	490	3295	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	SB_CalBG/RSABG		Chaparral, Closed-cone coniferous forest, Coastal scrub		125	850	410	2790	Yes	1974-01-01	No Photo Available
Arctostaphylos peninsularis ssp. peninsularis									CBR											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.2	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
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 lanceolata	Santa Clara thorn-mint	Lamiaceae	annual herb	Mar-Jun	None	None	G4	S4	4.2	SB_CalBG/RSABG		Chaparral (often serpentinite), Cismontane woodland, Coastal scrub	Rocky	80	1200	260	3935	Yes	1974-01-01	© 2005 Barry Breckling
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
Acanthomintha obovata ssp. obovata	San Benito thorn-mint	Lamiaceae	annual herb	Apr-Jul	None	None	G4T3T4	S3S4	4.2			Chaparral, Cismontane woodland, Valley and foothill grassland	Alkaline, Clay, Serpentine	395	1500	1295	4920	Yes	1974-01-01	© 2013 Chris Winchell
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
Agave utahensis var. nevadensis	Clark Mountain agave	Agavaceae	perennial leaf	May-Jul	None	None	G4T3	S3	4.2	SB_CalBG/RSABG		Joshua tree "woodland", Mojavean desert scrub, Pinyon and juniper woodland	Carbonate (sometimes), Volcanic (sometimes)	900	1585	2955	5200		1980-01-01	© 2009 Zoya Akulova
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 hendersonii	Henderson's bent grass	Poaceae	annual herb	Apr-Jun	None	None	G2Q	S2	3.2		Dam/Inundation, Development, Grazing, Non-native plant impacts, ORV activity, Other, Vandalism/dumping/litter	Valley and foothill grassland (mesic), Vernal pools		70	305	230	1000		1974-01-01	©2005 Steve Matson
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 fimbriatum var. purdyi	Purdy's onion	Alliaceae	perennial bulbiferous herb	Apr-Jun	None	None	G4G5T3	S3	4.3	SB_UCSC		Chaparral, Cismontane woodland	Clay, Serpentine	300	600	985	1970	Yes	1980-01-01	© 2014 Steve Matson
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 hoffmanii	Beegum onion	Alliaceae	perennial bulbiferous herb	Jun-Jul	None	None	G4	S4	4.3			Lower montane coniferous forest (serpentinite)		1100	1800	3610	5905	Yes	1974-01-01	©2019 Steve Matson
Allium howellii var. clokeyi	Mt. Pinos onion	Alliaceae	perennial bulbiferous herb	Apr-Jun	None	None	G4T2	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 parishii	Parish's onion	Alliaceae	perennial bulbiferous herb	Apr-May	None	None	G3	S3	4.3			Joshua tree "woodland", Mojavean desert scrub, Pinyon and juniper woodland	Rocky	900	1735	2955	5695		1974-01-01	© 2010 Justin M. Wood
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 siskiyouense	Siskiyou onion	Alliaceae	perennial bulbiferous herb	(Apr)May-Jul	None	None	G4	S4	4.3	SB_CalBG/RSABG		Lower montane coniferous forest, Upper montane coniferous forest	Rocky, Serpentine (sometimes)	855	2500	2805	8205		1974-01-01	John Doyen 2019
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	SB_UCSC; USFS_S	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 hooveri	Hoover's manzanita	Ericaceae	perennial evergreen shrub	Feb-Jun	None	None	G3	S3	4.3	SB_CalBG/RSABG; SB_UCSC; USFS_S		Broadleafed upland forest, Chaparral (rocky), Cismontane woodland, Lower montane coniferous forest		480	1035	1575	3395	Yes	1974-01-01	© 2005 Dean Wm. Taylor
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	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	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 crustacea ssp. insulicola	island manzanita	Ericaceae	perennial evergreen shrub	Jun-Mar	None	None	G4T3	S3	4.2			Chaparral, Closed-cone coniferous forest	Rocky	90	520	295	1705	Yes	1974-01-01	© 2019 Zoya Akulova
Arctostaphylos crustacea ssp. subcordata	Santa Cruz Island manzanita	Ericaceae	perennial evergreen shrub	Jan-Apr	None	None	G4T3	S3	4.2	SB_UCSC		Chaparral, Closed-cone coniferous forest	Rocky	100	730	330	2395	Yes	1974-01-01	© 2018 Susan McDougall
Arctostaphylos mewukka ssp. truei	True's manzanita	Ericaceae	perennial evergreen shrub	Feb-Jul	None	None	G4?T3	S3	4.2	SB_UCSC		Chaparral, Lower montane coniferous forest	Roadsides (sometimes)	425	1390	1395	4560	Yes	1984-01-01	© 2008 George W. Hartwell
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
Arctostaphylos viridissima	white-haired manzanita	Ericaceae	perennial evergreen shrub	May-Mar	None	None	G4	S4	4.2	SB_SBBG		Chaparral, Closed-cone coniferous forest	Rocky, Shale (usually)	100	500	330	1640	Yes	1980-01-01	No Photo Available
Angelica callii	Call's angelica	Apiaceae	perennial herb	Jun-Jul	None	None	G3	S3	4.3			Cismontane woodland, Lower montane coniferous forest	Mesic	1100	2000	3610	6560	Yes	1974-01-01	No Photo Available
Antennaria flagellaris	stoloniferous pussy-toes	Asteraceae	perennial stoloniferous herb	(Apr)May-Aug	None	None	G4	S3	4.2		Grazing, Mining, Other, Road/trail construction/maint.	Great Basin scrub (vernally mesic)		1450	2220	4755	7285		1984-01-01	© 2011 Matt Below
Antennaria suffrutescens	evergreen everlasting	Asteraceae	perennial stoloniferous herb	Jan-Jul	None	None	G4	S3	4.3			Lower montane coniferous forest (serpentinite)		500	1600	1640	5250		1974-01-01	©1995 Saint Mary's College of California
Antirrhinum ovatum	oval-leaved snapdragon	Plantaginaceae	annual herb	May-Nov	None	None	G3	S3	4.2		Agriculture, Development, Grazing, Non-native plant impacts, Road/trail construction/maint.	Chaparral, Cismontane woodland, Pinyon and juniper woodland, Valley and foothill grassland	Alkaline (often), Clay (sometimes)	200	1000	655	3280	Yes	1974-01-01	© 2013 Chris Winchell
Antirrhinum subcordatum	dimorphic snapdragon	Plantaginaceae	annual herb	Apr-Jul	None	None	G3	S3	4.3	USFS_S	Dam/Inundation, Grazing, Logging, Other, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral, Lower montane coniferous forest	Serpentine (sometimes)	185	800	605	2625	Yes	1974-01-01	© 2015 Dean Wm. Taylor
Antirrhinum virga	twig-like snapdragon	Plantaginaceae	perennial herb	Jun-Jul	None	None	G3?	S3?	4.3			Chaparral, Lower montane coniferous forest	Openings, Rocky, Serpentine (often)	100	2015	330	6610	Yes	1974-01-01	© 2013 Aaron Schusteff
Arnica viscosa	Mt. Shasta arnica	Asteraceae	perennial rhizomatous herb	Aug-Sep	None	None	G4	S3	4.3	SB_CalBG/RSABG		Subalpine coniferous forest, Upper montane coniferous forest	Rocky	1705	2745	5595	9005		1974-01-01	©2010 Keir Morse
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
Arabis blepharophylla	coast rockcress	Brassicaceae	perennial herb	Feb-May	None	None	G4	S4	4.3	SB_CalBG/RSABG		Broadleafed upland forest, Coastal bluff scrub, Coastal prairie, Coastal scrub	Rocky	3	1100	10	3610	Yes	1974-01-01	© 2011 Neal Kramer
Arabis fernaldiana var. stylosa									CBR										1974-01-01	No Photo Available
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
Arabis modesta	modest rockcress	Brassicaceae	perennial herb	Mar-Jul	None	None	G3	S3	4.3			Chaparral, Lower montane coniferous forest		120	800	395	2625		1974-01-01	©2014 Scot Loring
Arabis oregana	Oregon rockcress	Brassicaceae	perennial herb	May	None	None	G3G4Q	S3	4.3			Chaparral, Lower montane coniferous forest	Serpentine	600	1830	1970	6005		1974-01-01	©2021 Scot Loring
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
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
Arctostaphylos canescens ssp. sonomensis									CBR										1988-01-01	No Photo Available
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	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
Atriplex tularensis	Bakersfield smallscale	Chenopodiaceae	annual herb	Jun-Oct	None	CE	GX	SX	1A		Agriculture, Groundwater pumping, Hybridization, Other	Chenopod scrub		90	200	295	655	Yes	1974-01-01	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
Arctostaphylos hispidula	Howell's manzanita	Ericaceae	perennial evergreen shrub	Mar-Apr	None	None	G4	S3	4.2	SB_UCSC		Chaparral (sandstone, serpentinite)		120	1250	395	4100		1974-01-01	© 2006 Steve Matson
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
Arnica cernua	serpentine arnica	Asteraceae	perennial rhizomatous herb	Apr-Jul	None	None	G5	S4	4.3			Lower montane coniferous forest (serpentinite)		500	1920	1640	6300		1974-01-01	© 2021 Scot Loring
Arnica spathulata	Klamath arnica	Asteraceae	perennial rhizomatous herb	May-Aug	None	None	G3?	S3	4.3			Lower montane coniferous forest (serpentinite)		640	1800	2100	5905		1974-01-01	©2007 Keir Morse
Arnica venosa	Shasta County arnica	Asteraceae	perennial rhizomatous herb	May-Jul(Sep)	None	None	G3	S3	4.2			Cismontane woodland, Lower montane coniferous forest	Disturbed areas (often), Roadsides (often)	335	1490	1100	4890	Yes	1974-01-01	©2005 Dean Wm. Taylor
Artemisia palmeri	San Diego sagewort	Asteraceae	perennial deciduous shrub	(Feb)May-Sep	None	None	G3?	S3?	4.2	SB_CRES	Development, Foot traffic/trampling, Mining, Non-native plant impacts, Other, Road/trail construction/maint., Vandalism/dumping/litter	Chaparral, Coastal scrub, Riparian forest, Riparian scrub, Riparian woodland	Mesic, Sandy	5	915	15	3000		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
Astragalus agnicidus	Humboldt County milk-vetch	Fabaceae	perennial herb	(Mar)Apr-Sep	None	CE	G2	S2	1B.1	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 bicristatus	crested milk-vetch	Fabaceae	perennial herb	May-Aug	None	None	G3	S3	4.3	SB_CalBG/RSABG; USFS_S		Lower montane coniferous forest, Upper montane coniferous forest	Carbonate (usually), Rocky (sometimes), Sandy (sometimes)	1700	2745	5580	9005	Yes	1974-01-01	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 breweri	Brewer's milk-vetch	Fabaceae	annual herb	Apr-Jun	None	None	G3	S3	4.2	SB_CalBG/RSABG		Chaparral, Cismontane woodland, Meadows and seeps, Valley and foothill grassland (openings, often gravelly)	Serpentine (often), Volcanic	90	730	295	2395	Yes	1974-01-01	No Photo Available
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 clevelandii	Cleveland's milk-vetch	Fabaceae	perennial herb	Jun-Sep	None	None	G4	S4	4.3			Chaparral, Cismontane woodland, Riparian forest	Seeps, Serpentine	200	1500	655	4920	Yes	1974-01-01	No Photo Available
Astragalus crotalariae	Salton milk-vetch	Fabaceae	perennial herb	Jan-Apr	None	None	G4G5	S4	4.3	IUCN_LC; SB_CRES; SB_USDA		Sonoran desert scrub (gravelly, sandy)		-60	250	-195	820		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 inversus	Susanville milk-vetch	Fabaceae	perennial herb	May-Sep	None	None	G4	S4	4.3			Great Basin scrub, Lower montane coniferous forest, Pinyon and juniper woodland	Disturbed areas (often)	885	1850	2905	6070	Yes	1974-01-01	©2021 Steve Matson
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. danaus	Sweetwater Mountains milk-vetch	Fabaceae	perennial herb	Jul-Sep	None	None	G5T4	S4	4.3			Alpine boulder and rock field, Subalpine coniferous forest (rocky, talus)		3000	3660	9845	12010		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. borreganus	Borrego milk-vetch	Fabaceae	annual herb	Feb-May	None	None	G5T5?	S4	4.3	SB_CalBG/RSABG; SB_USDA		Mojavean desert scrub, Sonoran desert scrub	Sandy	30	895	100	2935		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?	S2	1B.2	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		Foot traffic/trampling, Grazing, 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 macrodon	Salinas milk-vetch	Fabaceae	perennial herb	Apr-Jul	None	None	G4	S4	4.3			Chaparral (openings), Cismontane woodland, Valley and foothill grassland	Sandstone (sometimes), Serpentine (sometimes), Shale (sometimes)	250	950	820	3115	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 miguelensis	San Miguel Island milk-vetch	Fabaceae	perennial herb	Mar-Jul	None	None	G4	S4	4.3	SB_CalBG/RSABG; SB_CRES; SB_USDA		Coastal bluff scrub, Coastal dunes, Coastal scrub		3	150	10	490	Yes	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 nutans	Providence Mountains milk-vetch	Fabaceae	annual herb	Mar-Jun(Oct)	None	None	G3	S3	4.3	SB_CalBG/RSABG		Joshua tree "woodland", Mojavean desert scrub, Pinyon and juniper woodland, Sonoran desert scrub	Gravelly (sometimes), Sandy (sometimes)	450	1950	1475	6400	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 pauperculus	depauperate milk-vetch	Fabaceae	annual herb	Mar-Jun	None	None	G4	S4	4.3			Chaparral, Cismontane woodland, Valley and foothill grassland	Vernally Mesic, Volcanic	60	1215	195	3985	Yes	1974-01-01	©2012 Tim Kellison
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	SB_CalBG/RSABG; SB_SBBG	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	No Photo Available
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 rattanii var. rattanii	Rattan's milk-vetch	Fabaceae	perennial herb	Apr-Jul	None	None	G4T4	S4	4.3			Chaparral, Cismontane woodland, Lower montane coniferous forest	Gravelly, Streambanks	30	825	100	2705	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 subvestitus	Kern County milk-vetch	Fabaceae	perennial herb	(May)Jun-Jul	None	None	G3	S3	4.3			Great Basin scrub, Meadows and seeps, Pinyon and juniper woodland	Gravelly (sometimes), Sandy (sometimes)	2330	2750	7645	9025	Yes	1974-01-01	No Photo Available
Astragalus anxius	Ash Valley milk-vetch	Fabaceae	perennial herb	May-Jul	None	None	G1	S1	1B.3	BLM_S; SB_UCSC; USFS_S	Foot traffic/trampling, Grazing, Logging, ORV activity, Other, Road/trail construction/maint.	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	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.
Aristocapsa insignis	Indian Valley spineflower	Polygonaceae	annual herb	May-Sep	None	None	G1	S1	1B.2		Dam/Inundation	Cismontane woodland (sandy)		300	600	985	1970	Yes	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
Ageratina shastensis	Shasta ageratina	Asteraceae	perennial herb	Jun-Oct	None	None	G3	S3	1B.2	SB_UCSC	Logging, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral, Lower montane coniferous forest	Carbonate (often), Rocky	400	1800	1310	5905	Yes	1974-01-01	©2011 Sierra Pacific Industries
Aliciella ripleyi	Ripley's aliciella	Polemoniaceae	perennial herb	May-Jul	None	None	G3	S2	2B.3		Grazing, Mining, Non-native plant impacts, Road/trail construction/maint.	Mojavean desert scrub (carbonate)		305	1950	1000	6400		1974-01-01	© 2020 Joey Malone
Acmispon argophyllus var. adsurgens	San Clemente Island bird's-foot trefoil	Fabaceae	perennial herb	Apr-Jun	None	CE	G5T2	S2	1B.1	SB_CalBG/RSABG; SB_CRES		Coastal bluff scrub, Coastal scrub	Rocky	15	395	50	1295	Yes	1974-01-01	© 2011 Dylan Neubauer
Acmispon argophyllus var. niveus	Santa Cruz Island bird's-foot trefoil	Fabaceae	perennial herb	Mar-Jul(Sep)	None	CE	G5T3	S3	4.3	SB_CalBG/RSABG	Grazing, Non-native animal impacts	Chaparral, Coastal bluff scrub, Coastal scrub	Rocky	5	680	15	2230	Yes	1974-01-01	© 2017 John Game
Acmispon dendroideus var. dendroideus	island broom	Fabaceae	perennial shrub	Jan-Aug(Oct)	None	None	G4T3	S3	4.2	SB_CalBG/RSABG; SB_USDA		Chaparral, Cismontane woodland, Closed-cone coniferous forest, Coastal bluff scrub, Coastal scrub		3	460	10	1510	Yes	1974-01-01	© 2003 Keir Morse
Acmispon dendroideus var. traskiae	San Clemente Island lotus	Fabaceae	perennial shrub	Feb-Aug	FD	CE	G4T3	S3	1B.3	SB_CalBG/RSABG; SB_SBBG	Development, Road/trail construction/maint.	Coastal bluff scrub, Coastal scrub, Valley and foothill grassland		15	365	50	1200	Yes	1974-01-01	© 2011 Dylan Neubauer
Acmispon dendroideus var. veatchii	San Miguel Island deerweed	Fabaceae	perennial shrub	Mar-Jun	None	None	G4T3	S3	4.3	SB_CalBG/RSABG		Coastal bluff scrub, Coastal scrub		10	350	35	1150		1980-01-01	© 2006 Steve Matson
Acmispon prostratus	Nuttall's acmispon	Fabaceae	annual herb	Mar-Jun(Jul)	None	None	G1G2	S1	1B.1	IUCN_EN; SB_CalBG/RSABG; SB_CRES; SB_USDA	Altered flood/tidal/hydrologic regime, Biocides, Development, Erosion/runoff, Foot traffic/trampling, 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, Coastal scrub (sandy)		0	10	0	35		1974-01-01	© 2014 Andrew Borcher
Acmispon rubriflorus	red-flowered bird's-foot trefoil	Fabaceae	annual herb	Apr-Jun	None	None	G2	S2	1B.1		Development, Grazing, ORV activity, Other	Cismontane woodland, Valley and foothill grassland		200	425	655	1395	Yes	1974-01-01	© 2011 Dean Wm. Taylor, Ph.D.
Astragalus tener var. ferrisiae	Ferris' milk-vetch	Fabaceae	annual herb	Apr-May	None	None	G2T1	S1	1B.1		Agriculture, Grazing, Non-native plant impacts, Other, Surface water diversion	Meadows and seeps (vernally mesic), Valley and foothill grassland (subalkaline flats)		2	75	5	245	Yes	1994-01-01	No Photo Available
Astragalus tener var. tener	alkali milk-vetch	Fabaceae	annual herb	Mar-Jun	None	None	G2T1	S1	1B.2	SB_UCSC	Agriculture, Biocides, Development, Disking, Foot traffic/trampling, Grazing, Improper burning regime, Landfill, Non-native plant impacts, ORV activity, Other, Surface water diversion	Playas, Valley and foothill grassland (adobe clay), Vernal pools	Alkaline	1	60	5	195	Yes	1994-01-01	No Photo Available
Atriplex coronata var. coronata	crownscale	Chenopodiaceae	annual herb	Mar-Oct	None	None	G4T3	S3	4.2	SB_CalBG/RSABG		Chenopod scrub, Valley and foothill grassland, Vernal pools	Alkaline, Clay (often)	1	590	5	1935	Yes	1994-01-01	© 1994 Robert E. Preston, Ph.D.
Atriplex coulteri	Coulter's saltbush	Chenopodiaceae	perennial herb	Mar-Oct	None	None	G3	S1S2	1B.2	SB_CalBG/RSABG; SB_CRES	Biocides, Development, Erosion/runoff, Foot traffic/trampling, 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 bluff scrub, Coastal dunes, Coastal scrub, Valley and foothill grassland	Alkaline (sometimes), Clay (sometimes)	3	460	10	1510		1994-01-01	No Photo Available
Atriplex depressa	brittlescale	Chenopodiaceae	annual herb	Apr-Oct	None	None	G2	S2	1B.2		Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Dam/Inundation, Development, Disking, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, Other, Recreational use (non-ORV)	Chenopod scrub, Meadows and seeps, Playas, Valley and foothill grassland, Vernal pools	Alkaline, Clay	1	320	5	1050	Yes	1994-01-01	© 2009 Zoya Akulova
Atriplex minuscula	lesser saltscale	Chenopodiaceae	annual herb	May-Oct	None	None	G2	S2	1B.1	SB_CalBG/RSABG	Agriculture, Altered flood/tidal/hydrologic regime, Dam/Inundation, Development, Disking, Erosion/runoff, Grazing, Improper burning regime, Landfill, Non-native plant impacts, Road/trail construction/maint.	Chenopod scrub, Playas, Valley and foothill grassland	Alkaline, Sandy	15	200	50	655	Yes	1994-01-01	© 2000 Robert E. Preston, Ph.D.
Atriplex pacifica	south coast saltscale	Chenopodiaceae	annual herb	Mar-Oct	None	None	G4	S2	1B.2	SB_CalBG/RSABG; SB_CRES	Development, Erosion/runoff, Foot traffic/trampling, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Coastal bluff scrub, Coastal dunes, Coastal scrub, Playas		0	140	0	460		1994-01-01	No Photo Available
Aphyllon parishii ssp. brachylobum	short-lobed broomrape	Orobanchaceae	annual/perennial herb (parasitic)	Apr-Oct	None	None	G4?T4	S3	4.2		Development, Erosion/runoff	Coastal bluff scrub, Coastal dunes, Coastal scrub	Sandy	3	305	10	1000		1974-01-01	No Photo Available
Aphyllon validum ssp. howellii	Howell's broomrape	Orobanchaceae	perennial herb (parasitic)	Jun-Sep	None	None	G4T3	S3	4.3			Chaparral (serpentinite, volcanic)		180	1740	590	5710	Yes	1984-01-01	No Photo Available
Aphyllon validum ssp. validum	Rock Creek broomrape	Orobanchaceae	perennial herb (parasitic)	May-Sep	None	None	G4T2	S2	1B.2	SB_CalBG/RSABG; USFS_S	Erosion/runoff, Foot traffic/trampling, Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral, Pinyon and juniper woodland	Granitic	1030	2000	3380	6560	Yes	1974-01-01	No Photo Available
Acanthoscyphus parishii var. cienegensis	Cienega Seca oxytheca	Polygonaceae	annual herb	(May)Jun-Sep	None	None	G4?T2	S2	1B.3	SB_CalBG/RSABG; USFS_S	Foot traffic/trampling, Mining, Other, Recreational use (non-ORV), Road/trail construction/maint.	Joshua tree "woodland", Pinyon and juniper woodland, Upper montane coniferous forest (granitic, sandy)		2105	2450	6905	8040	Yes	1988-01-01	© 2018 Keir Morse
Acanthoscyphus parishii var. goodmaniana	Cushenbury oxytheca	Polygonaceae	annual herb	May-Oct	FE	None	G4?T1	S1	1B.1	SB_CalBG/RSABG	Altered flood/tidal/hydrologic regime, Improper burning regime, Mining, Non-native plant impacts, ORV activity, Road/trail construction/maint.	Pinyon and juniper woodland (carbonate, talus)	Carbonate, Sandy	1219	2377	4000	7800	Yes	1988-01-01	© 2018 Michael Charters
Angelica kingii	King's angelica	Apiaceae	perennial herb	Jun-Aug	None	None	G3G4	S3	4.2	SB_CalBG/RSABG		Great Basin scrub, Meadows and seeps, Pinyon and juniper woodland	Mesic	1830	3080	6005	10105		2001-01-01	© 2015 Steve Matson
Angelica lucida	sea-watch	Apiaceae	perennial herb	Apr-Sep	None	None	G5	S3	4.2	SB_USDA		Coastal bluff scrub, Coastal dunes, Coastal scrub, Marshes and swamps (coastal salt)		0	150	0	490		2001-01-01	© 2022 Stillwater Sciences
Arabis repanda var. greenei	Greene's rockcress	Brassicaceae	perennial herb	Jun-Aug	None	None	G5T3Q	S3	3.3			Subalpine coniferous forest, Upper montane coniferous forest	Granitic, Rocky (sometimes), Sandy (sometimes), Talus	2345	3600	7695	11810	Yes	2001-01-01	No Photo Available
Arctostaphylos manzanita ssp. elegans	Konocti manzanita	Ericaceae	perennial evergreen shrub	(Jan)Mar-May(Jul)	None	None	G5T3	S3	1B.3	SB_UCSC	Agriculture, Development, Erosion/runoff, Improper burning regime, Mining, Road/trail construction/maint.	Chaparral, Cismontane woodland, Lower montane coniferous forest	Volcanic	395	1615	1295	5300	Yes	2001-01-01	©2018 Dean Wm. Taylor
Arctostaphylos parryana ssp. tumescens	interior manzanita	Ericaceae	perennial evergreen shrub	Feb-Apr	None	None	G4T3T4	S3S4	4.3	USFS_S		Chaparral (montane), Cismontane woodland		2100	2310	6890	7580	Yes	2001-01-01	No Photo Available
Anisocarpus scabridus	scabrid alpine tarplant	Asteraceae	perennial herb	Jul-Aug(Sep)	None	None	G3	S3	1B.3	SB_CalBG/RSABG; USFS_S	Development, Erosion/runoff, Foot traffic/trampling, ORV activity, Other, Road/trail construction/maint.	Upper montane coniferous forest (metamorphic, rocky)		1650	2300	5415	7545	Yes	1980-01-01	©2014 Sierra Pacific Industries
Acleisanthes nevadensis	desert wing-fruit	Nyctaginaceae	perennial herb	Apr-Sep	None	None	G4?	S1	2B.1		Biocides, Development, Grazing, Non-native plant impacts, ORV activity, Road/trail construction/maint.	Joshua tree "woodland", Mojavean desert scrub	Gravelly, Rocky	795	1250	2610	4100		1984-01-01	© 2020 Neal Kramer
Abronia maritima	red sand-verbena	Nyctaginaceae	perennial herb	Feb-Nov	None	None	G4	S3?	4.2	SB_CalBG/RSABG		Coastal dunes		0	100	0	330		1994-01-01	©2003 Christopher L. Christie
Abronia nana var. covillei	Coville's dwarf abronia	Nyctaginaceae	perennial herb	May-Aug	None	None	G4T3	S3	4.2	SB_CalBG/RSABG; USFS_S		Great Basin scrub, Joshua tree "woodland", Pinyon and juniper woodland, Subalpine coniferous forest, Upper montane coniferous forest	Carbonate, Sandy	1524	3100	5000	10170		1994-01-01	© 2003 James M. Andre
Acanthomintha obovata ssp. cordata	heart-leaved thorn-mint	Lamiaceae	annual herb	Apr-Jul	None	None	G4T3	S3	4.2	SB_CalBG/RSABG; SB_SBBG		Chaparral (openings), Cismontane woodland, Pinyon and juniper woodland, Valley and foothill grassland	Clay	785	1540	2575	5055	Yes	1994-01-01	© 2017 Aaron Schusteff
Acleisanthes longiflora	angel trumpets	Nyctaginaceae	perennial herb	May	None	None	G5	S1	2B.3	SB_CalBG/RSABG		Sonoran desert scrub (carbonate)		90	95	295	310		1994-01-01	© 2013 Richard Spellenberg
Allium atrorubens var. atrorubens	Great Basin onion	Alliaceae	perennial bulbiferous herb	May-Jun	None	None	G4T4	S2	2B.3		Grazing, Improper burning regime, Military operations, Non-native plant impacts	Great Basin scrub, Pinyon and juniper woodland	Rocky (sometimes), Sandy (sometimes)	1200	2315	3935	7595		1994-01-01	© 2021 Steve Matson
Allium jepsonii	Jepson's onion	Alliaceae	perennial bulbiferous herb	Apr-Aug	None	None	G2	S2	1B.2	BLM_S; SB_UCSC; USFS_S	Development, Erosion/runoff, Grazing, Logging, Mining, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Chaparral, Cismontane woodland, Lower montane coniferous forest	Serpentine, Volcanic	300	1320	985	4330	Yes	1994-01-01	© 2019 Steven Perry
Allium nevadense	Nevada onion	Alliaceae	perennial bulbiferous herb	Apr-May	None	None	G4	S3	2B.3		Development, Foot traffic/trampling, Non-native animal impacts, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV)	Pinyon and juniper woodland (gravelly, sandy)		810	1700	2660	5580		1994-01-01	© 2006 James M. Andre
Allium sanbornii var. congdonii	Congdon's onion	Alliaceae	perennial bulbiferous herb	Apr-Jul	None	None	G4T3	S3	4.3			Chaparral, Cismontane woodland	Serpentine, Volcanic	300	1395	985	4575	Yes	1994-01-01	© 2008 Steven Perry
Allium sanbornii var. sanbornii	Sanborn's onion	Alliaceae	perennial bulbiferous herb	May-Sep	None	None	G4T4?	S3S4	4.2			Chaparral, Cismontane woodland, Lower montane coniferous forest	Gravelly, Serpentine (usually)	260	1510	855	4955		1994-01-01	©2018 Steven Perry
Antennaria marginata	white-margined everlasting	Asteraceae	perennial stoloniferous herb	May-Aug	None	None	G4G5	S1	2B.3	USFS_S	Foot traffic/trampling	Lower montane coniferous forest, Upper montane coniferous forest		2120	3353	6955	11000		1994-01-01	© 2010 Duncan S. Bell
Antennaria pulchella	beautiful pussy-toes	Asteraceae	perennial stoloniferous herb	Jun-Sep	None	None	G4	S4	4.3			Alpine boulder and rock field (stream margins), Meadows and seeps		2800	3700	9185	12140		1994-01-01	© 2014 Steve Matson
Arabis rigidissima var. demota	Galena Creek rockcress	Brassicaceae	perennial herb	Jul-Aug	None	None	G3T3Q	S1	1B.2	USFS_S	Development, Foot traffic/trampling, Logging, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Broadleafed upland forest, Upper montane coniferous forest	Rocky	2255	2560	7400	8400		1994-01-01	No Photo Available
Arctostaphylos andersonii	Anderson's manzanita	Ericaceae	perennial evergreen shrub	Nov-May	None	None	G2	S2	1B.2	SB_CalBG/RSABG; SB_UCSC	Biocides, Development, Erosion/runoff, Foot traffic/trampling, Improper burning regime, Logging, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Broadleafed upland forest, Chaparral, North Coast coniferous forest	Edges, Openings	60	760	195	2495	Yes	1974-01-01	© 2018 Jason Matthias Mills
Arctostaphylos bakeri ssp. sublaevis	Cedars manzanita	Ericaceae	perennial evergreen shrub	Feb-May	None	CR	G2T2	S2	1B.2	BLM_S; SB_UCSC	Development, Mining, Road/trail construction/maint.	Chaparral, Closed-cone coniferous forest	Seeps, Serpentine	185	760	605	2495	Yes	1994-01-01	© 2012 John Game
Arctostaphylos glandulosa ssp. gabrielensis	San Gabriel manzanita	Ericaceae	perennial evergreen shrub	Mar	None	None	G5T3	S3	1B.2	SB_CalBG/RSABG; USFS_S	Development, Foot traffic/trampling, Other, Road/trail construction/maint., Wood cutting or brush clearing	Chaparral (rocky)		595	1500	1950	4920	Yes	1994-01-01	© 2016 Neal Kramer
Arctostaphylos glandulosa ssp. crassifolia	Del Mar manzanita	Ericaceae	perennial evergreen shrub	Jun-Apr	FE	None	G5T2	S2	1B.1	SB_CRES	Agriculture, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Hybridization, Improper burning regime, 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	Chaparral (maritime, sandy)		0	365	0	1200		1974-01-01	© 2012 Neal Kramer
Arctostaphylos malloryi	Mallory's manzanita	Ericaceae	perennial evergreen shrub	Apr-Jul	None	None	G3	S3	4.3	SB_UCSC		Chaparral, Lower montane coniferous forest	Volcanic	765	1280	2510	4200	Yes	1974-01-01	©2009 Timothy D. Ives
Arctostaphylos nummularia ssp. mendocinoensis	pygmy manzanita	Ericaceae	perennial evergreen shrub	Jan	None	None	G3?T1	S1	1B.2	SB_UCSC		Closed-cone coniferous forest (acidic sandy clay)		90	200	295	655	Yes	1994-01-01	No Photo Available
Arctostaphylos nortensis	Del Norte manzanita	Ericaceae	perennial evergreen shrub	Feb	None	None	G2	S2	4.3	IUCN_LC; SB_UCSC		Chaparral, Lower montane coniferous forest	Serpentine (often)	500	800	1640	2625	Yes	1994-01-01	©2017 Steve Matson
Arctostaphylos osoensis	Oso manzanita	Ericaceae	perennial evergreen shrub	Feb-Mar	None	None	G1	S1	1B.2	SB_UCSC		Chaparral, Cismontane woodland		95	500	310	1640	Yes	1994-01-01	No Photo Available
Arctostaphylos regismontana	Kings Mountain manzanita	Ericaceae	perennial evergreen shrub	Dec-Apr	None	None	G2	S2	1B.2	SB_UCSC	Biocides, Disease, Erosion/runoff, Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Broadleafed upland forest, Chaparral, North Coast coniferous forest	Granitic, Sandstone	305	730	1000	2395	Yes	1994-01-01	No Photo Available
Arctostaphylos tomentosa ssp. daciticola	dacite manzanita	Ericaceae	perennial evergreen shrub	Mar-May	None	None	G4T1	S1	1B.1	SB_UCSC		Chaparral, Cismontane woodland		100	300	330	985	Yes	1994-01-01	No Photo Available
Arnica fulgens	hillside arnica	Asteraceae	perennial rhizomatous herb	May-Jul(Aug)	None	None	G5	S3	2B.2		Foot traffic/trampling, Grazing, Logging, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Wood cutting or brush clearing	Great Basin scrub, Lower montane coniferous forest, Meadows and seeps	Mesic	1495	2700	4905	8860		1994-01-01	No Photo Available
Asclepias solanoana	serpentine milkweed	Apocynaceae	perennial herb	May-Jul(Aug)	None	None	G3	S3	4.2	SB_CalBG/RSABG		Chaparral, Cismontane woodland, Lower montane coniferous forest	Serpentine	230	1860	755	6105	Yes	1974-01-01	© 2009 Julie Kierstead Nelson
Aspidotis carlotta-halliae	Carlotta Hall's lace fern	Pteridaceae	perennial rhizomatous herb	Jan-Dec	None	None	G3	S3	4.2			Chaparral, Cismontane woodland	Serpentine (usually)	100	1400	330	4595	Yes	1994-01-01	No Photo Available
Astragalus allochrous var. playanus	playa milk-vetch	Fabaceae	perennial herb	Apr	None	None	G4T4	S2	2B.2		Road/trail construction/maint.	Mojavean desert scrub (sandy)		800	800	2625	2625		1994-01-01	No Photo Available
Astragalus lentiginosus var. antonius	San Antonio milk-vetch	Fabaceae	perennial herb	Apr-Jul	None	None	G5T2	S2	1B.3	SB_CalBG/RSABG; SB_USDA; USFS_S	Channelization, Development, Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint.	Lower montane coniferous forest, Upper montane coniferous forest		1500	2600	4920	8530	Yes	1994-01-01	No Photo Available
Astragalus lentiginosus var. sierrae	Big Bear Valley milk-vetch	Fabaceae	perennial herb	Apr-Aug	None	None	G5T2	S2	1B.2	SB_CalBG/RSABG; USFS_S	Development, Erosion/runoff, Foot traffic/trampling, Grazing, Logging, Mining, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Meadows and seeps, Mojavean desert scrub, Pinyon and juniper woodland, Upper montane coniferous forest	Gravelly (sometimes), Rocky (sometimes)	1800	2600	5905	8530	Yes	1994-01-01	No Photo Available
Astragalus pachypus var. jaegeri	Jaeger's milk-vetch	Fabaceae	perennial shrub	Dec-Jun	None	None	G4T1	S1	1B.1	SB_CalBG/RSABG; USFS_S	Agriculture, Dam/Inundation, Development, Foot traffic/trampling, Grazing, Other, Road/trail construction/maint.	Chaparral, Cismontane woodland, Coastal scrub, Valley and foothill grassland	Rocky (sometimes), Sandy (sometimes)	365	975	1200	3200	Yes	1994-01-01	No Photo Available
Astragalus platytropis	broad-keeled milk-vetch	Fabaceae	perennial herb	Jun-Sep	None	None	G5	S3	2B.2		Foot traffic/trampling, Grazing, Mining, ORV activity, Recreational use (non-ORV)	Alpine boulder and rock field, Pinyon and juniper woodland, Subalpine coniferous forest	Rocky	2345	3550	7695	11650		1994-01-01	No Photo Available
Astragalus pulsiferae var. pulsiferae	Pulsifer's milk-vetch	Fabaceae	perennial herb	May-Aug(Sep)	None	None	G4T2	S2	1B.2	BLM_S; SB_UCSC; USFS_S	Foot traffic/trampling, Grazing, Logging, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter	Great Basin scrub, Lower montane coniferous forest, Pinyon and juniper woodland	Granitic (usually), Rocky (sometimes), Sandy (sometimes)	1300	1800	4265	5905		1994-01-01	No Photo Available
Astragalus pulsiferae var. suksdorfii	Suksdorf's milk-vetch	Fabaceae	perennial herb	May-Aug	None	None	G4T2	S2	1B.2	BLM_S; SB_UCSC; USFS_S	Development, Foot traffic/trampling, Grazing, Logging, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Wood cutting or brush clearing	Great Basin scrub, Lower montane coniferous forest, Pinyon and juniper woodland	Gravelly, Rocky, Volcanic	1300	2000	4265	6560		1994-01-01	©2013 Kirsten Bovee
Atriplex serenana var. davidsonii	Davidson's saltscale	Chenopodiaceae	annual herb	Apr-Oct	None	None	G5T1	S1	1B.2	SB_CalBG/RSABG	Altered flood/tidal/hydrologic regime, Development, Disking, Grazing, Landfill, Non-native plant impacts, ORV activity, Waterway bank protection/maintenance	Coastal bluff scrub, Coastal scrub	Alkaline	10	200	35	655		1994-01-01	No Photo Available
Azolla microphylla	Mexican mosquito fern	Azollaceae	annual/perennial herb	Aug	None	None	G5	S4	4.2			Marshes and swamps (ponds, slow water)		30	100	100	330		1994-01-01	No Photo Available
Anthoxanthum nitens ssp. nitens	vanilla-grass	Poaceae	perennial rhizomatous herb	Apr-Jul	None	None	G5T5	S2	2B.3		Foot traffic/trampling, Grazing, Logging, Recreational use (non-ORV)	Meadows and seeps (mesic)		1500	1895	4920	6215		1994-01-01	©2013 Kirsten Bovee
Acmispon argyraeus var. multicaulis	scrub lotus	Fabaceae	perennial herb	Apr-Jun	None	None	G4?T2	S2	1B.3	BLM_S; SB_CalBG/RSABG	Development, Mining, ORV activity	Pinyon and juniper woodland (granitic)		1200	1500	3935	4920	Yes	1994-01-01	© 2010 James M. Andre
Acmispon argyraeus var. notitius	Providence Mountains lotus	Fabaceae	perennial herb	May-Aug	None	None	G4?T2	S2	1B.3			Pinyon and juniper woodland		1200	2000	3935	6560	Yes	1994-01-01	No Photo Available
Acmispon haydonii	pygmy lotus	Fabaceae	perennial herb	Jan-Jun	None	None	G3	S3	1B.3	SB_CRES; SB_USDA	Development, Foot traffic/trampling, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter	Pinyon and juniper woodland, Sonoran desert scrub	Rocky	520	1200	1705	3935		1994-01-01	© 1995 Saint Mary's College of California
Acanthoscyphus parishii var. abramsii	Abrams' oxytheca	Polygonaceae	annual herb	Jun-Aug	None	None	G4?T1T2	S1S2	1B.2	USFS_S	Road/trail construction/maint.	Chaparral (sandy, shale)		1143	2057	3750	6750	Yes	1994-01-01	© 2007 Steve Matson
Arctostaphylos rainbowensis	Rainbow manzanita	Ericaceae	perennial evergreen shrub	Dec-Mar	None	None	G2	S2	1B.1	BLM_S; SB_CRES; USFS_S	Agriculture, Development, Improper burning regime, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint.	Chaparral		205	670	675	2200	Yes	1994-01-01	No Photo Available
Androsace elongata ssp. acuta	California androsace	Primulaceae	annual herb	Mar-Jun	None	None	G5?T3T4	S3S4	4.2	SB_CalBG/RSABG; SB_USDA		Chaparral, Cismontane woodland, Coastal scrub, Meadows and seeps, Pinyon and juniper woodland, Valley and foothill grassland		150	1305	490	4280		1994-01-01	© 2008 Aaron Schusteff
Abronia villosa var. aurita	chaparral sand-verbena	Nyctaginaceae	annual herb	(Jan)Mar-Sep	None	None	G5T2?	S2	1B.1	BLM_S; SB_CalBG/RSABG; USFS_S	Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Channelization, Dam/Inundation, Development, Disking, 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	Chaparral, Coastal scrub, Desert dunes	Sandy	75	1600	245	5250		2001-01-01	© 2011 Aaron E. Sims
Abutilon parvulum	dwarf abutilon	Malvaceae	perennial herb	Apr-May	None	None	G5	S2S3	2B.3		Development, Mining, ORV activity	Chenopod scrub (rocky)		900	1360	2955	4460		2001-01-01	© 2005 James M. Andre
Agave utahensis var. eborispina	ivory-spined agave	Agavaceae	perennial leaf	May-Jun	None	None	G4T3	S2	1B.3	BLM_S; SB_CalBG/RSABG		Mojavean desert scrub (carbonate, rocky slopes)		945	1370	3100	4495		1980-01-01	© 2011 Zoya Akulova
Ageratina herbacea	desert ageratina	Asteraceae	perennial herb	Jul-Oct	None	None	G5	S3	2B.3			Pinyon and juniper woodland (rocky)		1525	2200	5005	7220		2001-01-01	© 2012 Richard Spellenberg
Alisma gramineum	grass alisma	Alismataceae	perennial rhizomatous herb (aquatic)	Jun-Aug	None	None	G5	S3	2B.2		Foot traffic/trampling, Grazing, Other, Road/trail construction/maint.	Marshes and swamps (shallow freshwater)		390	1800	1280	5905		2001-01-01	© 2016 John Doyen
Allium atrorubens var. cristatum	Inyo onion	Alliaceae	perennial bulbiferous herb	Apr-Jun	None	None	G4T4	S4	4.3			Joshua tree "woodland", Mojavean desert scrub, Pinyon and juniper woodland	Rocky (sometimes), Sandy (sometimes)	1200	2560	3935	8400		2001-01-01	© 2005 James M. Andre
Allium marvinii	Yucaipa onion	Alliaceae	perennial bulbiferous herb	Apr-May	None	None	G1	S1	1B.2	BLM_S; SB_CalBG/RSABG; USFS_S	Altered flood/tidal/hydrologic regime, Biocides, Development, Grazing, Non-native plant impacts, Other, Road/trail construction/maint.	Chaparral (clay, openings)		760	1065	2495	3495	Yes	2001-01-01	© 2013 Keir Morse
Allium peninsulare var. franciscanum	Franciscan onion	Alliaceae	perennial bulbiferous herb	(Apr)May-Jun	None	None	G4G5T2	S2	1B.2	SB_CalBG/RSABG	Development, Foot traffic/trampling, Non-native plant impacts, Other, Road/trail construction/maint., Wood cutting or brush clearing	Cismontane woodland, Valley and foothill grassland	Clay, Serpentine (often), Volcanic	52	305	170	1000	Yes	2001-01-01	© 2019 Aaron Arthur
Aloysia wrightii	Wright's beebrush	Verbenaceae	perennial evergreen shrub	Apr-Oct	None	None	G5	S4	4.3			Joshua tree "woodland", Pinyon and juniper woodland	Carbonate (often), Rocky	900	1600	2955	5250		2001-01-01	© 2010 James M. Andre
Amaranthus watsonii	Watson's amaranth	Amaranthaceae	annual herb	Apr-Sep	None	None	G5?	S3	4.3	SB_CalBG/RSABG		Mojavean desert scrub, Sonoran desert scrub		20	1700	65	5580		2001-01-01	© 2003 Debra Valov
Amorpha californica var. napensis	Napa false indigo	Fabaceae	perennial deciduous shrub	Apr-Jul	None	None	G4T2	S2	1B.2	SB_CalBG/RSABG	Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Development, Disease, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Insufficient population/stand size, Logging, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing	Broadleafed upland forest (openings), Chaparral, Cismontane woodland		50	2000	165	6560	Yes	2001-01-01	© 2016 John Doyen
Androsace occidentalis									CBR										2001-01-01	No Photo Available
Arenaria lanuginosa var. saxosa	rock sandwort	Caryophyllaceae	perennial herb	Jul-Aug	None	None	G5T5	S2	2B.3	SB_CalBG/RSABG; USFS_S	Foot traffic/trampling, Over-collecting/poaching, Recreational use (non-ORV)	Subalpine coniferous forest, Upper montane coniferous forest	Mesic, Sandy	1455	2600	4775	8530		2001-01-01	No Photo Available
Artemisia nesiotica	island sagebrush	Asteraceae	perennial evergreen shrub	Apr-Sep	None	None	G3	S3	4.3			Coastal scrub (rocky), Valley and foothill grassland		5	175	15	575	Yes	2001-01-01	No Photo Available
Asclepias asperula ssp. asperula	antelope-horns	Apocynaceae	perennial herb	May-Sep	None	None	G5T5	S3	4.3	SB_CalBG/RSABG		Mojavean desert scrub, Pinyon and juniper woodland	Rocky	915	2195	3000	7200		2001-01-01	No Photo Available
Asclepias nyctaginifolia	Mojave milkweed	Apocynaceae	perennial herb	May-Jun	None	None	G4?	S2	2B.1		Biocides, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Mining, Non-native animal impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint.	Mojavean desert scrub, Pinyon and juniper woodland		875	1700	2870	5580		2001-01-01	No Photo Available
Asplenium vespertinum	western spleenwort	Aspleniaceae	perennial rhizomatous herb	Feb-Jun	None	None	G3?	S4	4.2			Chaparral, Cismontane woodland, Coastal scrub	Rocky	180	1000	590	3280		1974-01-01	No Photo Available
Astragalus cimae var. sufflatus	inflated Cima milk-vetch	Fabaceae	perennial herb	Apr-Jun	None	None	G3T3	S3	1B.3	BLM_S; SB_CalBG/RSABG; USFS_S	Road/trail construction/maint.	Great Basin scrub, Pinyon and juniper woodland	Carbonate, Rocky	1500	2075	4920	6810	Yes	1974-01-01	No Photo Available
Astragalus didymocarpus var. milesianus	Miles' milk-vetch	Fabaceae	annual herb	Mar-Jun	None	None	G5T2	S2	1B.2		Development	Coastal scrub (clay)		20	90	65	295	Yes	2001-01-01	No Photo Available
Astragalus inyoensis	Inyo milk-vetch	Fabaceae	perennial herb	May-Jul	None	None	G3	S3	4.2	IUCN_NT; SB_CalBG/RSABG; SB_USDA		Great Basin scrub, Pinyon and juniper woodland	Carbonate (sometimes), Volcanic (usually)	1500	3050	4920	10005		1974-01-01	No Photo Available
Astragalus iodanthus var. diaphanoides	snake milk-vetch	Fabaceae	perennial herb	Apr-Jun	None	None	G4T4	S3	4.3			Chenopod scrub, Great Basin scrub (clay, sandy)		1200	1405	3935	4610		2001-01-01	No Photo Available
Astragalus lemmonii	Lemmon's milk-vetch	Fabaceae	perennial herb	May-Aug(Sep)	None	None	G2	S2	1B.2	BLM_S; SB_CalBG/RSABG; USFS_S	Development, Grazing, Insufficient population/stand size, Non-native plant impacts, Road/trail construction/maint.	Great Basin scrub, Marshes and swamps (lake margins), Meadows and seeps		1007	2200	3305	7220		2001-01-01	©2008 Steve Matson
Astragalus nuttallii var. nuttallii	ocean bluff milk-vetch	Fabaceae	perennial herb	Jan-Nov	None	None	G4T4	S4	4.2	SB_UCSC		Coastal bluff scrub, Coastal dunes		3	120	10	395	Yes	2001-01-01	No Photo Available
Astragalus oophorus var. oophorus	egg milk-vetch	Fabaceae	perennial herb	May-Jul	None	None	G4T4?	S3S4	4.3			Great Basin scrub, Pinyon and juniper woodland, Subalpine coniferous forest	Gravelly (sometimes), Sandy (sometimes)	1500	3170	4920	10400		2001-01-01	No Photo Available
Astragalus pycnostachyus var. pycnostachyus	coastal marsh milk-vetch	Fabaceae	perennial herb	(Apr-May)Jun-Oct	None	None	G2T2	S2	1B.2	BLM_S; SB_CalBG/RSABG; SB_SBBG; SB_UCBG	Altered flood/tidal/hydrologic regime, Degraded water quality, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Insufficient population/stand size, 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	Coastal dunes (mesic), Coastal scrub, Marshes and swamps (coastal salt, streamsides)		0	55	0	180	Yes	2001-01-01	©2009 Neal Kramer
Astragalus whitneyi var. lenophyllus	woolly-leaved milk-vetch	Fabaceae	perennial herb	Jul-Aug	None	None	G5T4	S4	4.3			Alpine boulder and rock field, Subalpine coniferous forest (rocky)		2135	3050	7005	10005		2001-01-01	No Photo Available
Atriplex argentea var. hillmanii	Hillman's silverscale	Chenopodiaceae	annual herb	Jun-Sep	None	None	G5T4	S2	2B.2			Great Basin scrub, Meadows and seeps	Alkaline	1200	1700	3935	5580		2001-01-01	No Photo Available
Atriplex cordulata var. erecticaulis	Earlimart orache	Chenopodiaceae	annual herb	Aug-Sep(Nov)	None	None	G3T1	S1	1B.2		Agriculture, Development, Disking, Erosion/runoff, Grazing, Landfill, Non-native plant impacts, Other, Road/trail construction/maint.	Valley and foothill grassland		40	100	130	330	Yes	2001-01-01	© 2009 Robert E. Preston, Ph.D.
Atriplex gardneri var. falcata	falcate saltbush	Chenopodiaceae	perennial herb	May-Aug	None	None	G4T4Q	S2S3	2B.2		Grazing, Other	Chenopod scrub, Great Basin scrub	Alkaline (often)	1200	1700	3935	5580		2001-01-01	No Photo Available
Atriplex persistens	vernal pool smallscale	Chenopodiaceae	annual herb	Jun-Oct	None	None	G2	S2	1B.2		Agriculture, Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Grazing, Non-native plant impacts, Pollution	Vernal pools (alkaline)		10	115	35	375	Yes	2001-01-01	No Photo Available
Atriplex subtilis	subtle orache	Chenopodiaceae	annual herb	(Apr)Jun-Sep(Oct)	None	None	G1	S1	1B.2		Agriculture, Altered flood/tidal/hydrologic regime, Development, Foot traffic/trampling, Grazing, Landfill, Mining	Valley and foothill grassland	Alkaline	40	100	130	330	Yes	1994-01-01	© 2000 Robert E. Preston, Ph.D.
Anomobryum julaceum	slender silver moss	Bryaceae	moss		None	None	G5?	S2	4.2		Erosion/runoff, Road/trail construction/maint.	Broadleafed upland forest, Lower montane coniferous forest, North Coast coniferous forest	Roadsides (usually)	100	1000	330	3280		2001-01-01	© 2013 Scot Loring
Arctostaphylos gabilanensis	Gabilan Mountains manzanita	Ericaceae	perennial evergreen shrub	Jan	None	None	G1	S1	1B.2	SB_UCSC	Non-native plant impacts	Chaparral, Cismontane woodland	Granitic	300	700	985	2295	Yes	2005-01-01	© 2005 Dean Wm. Taylor
Astragalus pulsiferae var. coronensis	Modoc Plateau milk-vetch	Fabaceae	perennial herb	(Apr)May-Jul	None	None	G4T3	S3	4.2	USFS_S		Great Basin scrub, Lower montane coniferous forest, Pinyon and juniper woodland	Gravelly, Sandy, Volcanic	1345	1890	4415	6200		2005-01-01	No Photo Available
Ancistrocarphus keilii	Santa Ynez groundstar	Asteraceae	annual herb	Mar-Apr	None	None	G1	S1	1B.1			Chaparral, Cismontane woodland	Sandy	40	130	130	425	Yes	2005-01-01	© 2023 Kristen M Nelson
Acalypha californica									CBR										2006-01-10	No Photo Available
Agastache parvifolia									CBR										2006-01-10	No Photo Available
Agoseris elata									CBR										2006-01-10	No Photo Available
Allium anserinum									CBR										2006-01-10	No Photo Available
Allium cratericola									CBR										2006-01-10	No Photo Available
Allium davisiae									CBR										2006-01-10	No Photo Available
Allium membranaceum									CBR										2006-01-10	No Photo Available
Amsinckia spectabilis var. microcarpa									CBR										2006-01-10	No Photo Available
Amsinckia vernicosa var. vernicosa									CBR										2006-01-10	No Photo Available
Antennaria racemosa									CBR										2006-01-10	No Photo Available
Antirrhinum filipes									CBR										2006-01-10	No Photo Available
Arabis breweri var. austinae									CBR										2006-01-10	No Photo Available
Arctostaphylos acutifolia									CBR										2006-01-10	No Photo Available
Arctostaphylos cinerea									CBR										2006-01-10	No Photo Available
Arctostaphylos elegans									CBR										2006-01-10	No Photo Available
Arctostaphylos insularis									CBR										2006-01-10	No Photo Available
Arctostaphylos intricata var. intricata									CBR										2006-01-10	No Photo Available
Arctostaphylos intricata var. oblongifolia									CBR										2006-01-10	No Photo Available
Arctostaphylos manzanita ssp. roofii									CBR										2006-01-10	No Photo Available
Arctostaphylos parvifolia									CBR										2006-01-10	No Photo Available
Arctostaphylos roofii									CBR										2006-01-10	No Photo Available
Arctostaphylos uva-ursi var. leobreweri									CBR										2006-01-10	No Photo Available
Arctostaphylos uva-ursi var. suborbiculata									CBR										2006-01-10	No Photo Available
Arenaria kingii ssp. compacta									CBR										2006-01-10	No Photo Available
Arnica tomentella									CBR										2006-01-10	No Photo Available
Artemisia cana ssp. bolanderi									CBR										2006-01-10	No Photo Available
Astragalus austiniae	Austin's astragalus	Fabaceae	perennial herb	(May)Jul-Sep	None	None	G2G3	S2S3	1B.3	SB_UCSC	Foot traffic/trampling, Recreational use (non-ORV)	Alpine boulder and rock field, Subalpine coniferous forest	Rocky	2440	2970	8005	9745		2013-12-04	No Photo Available
Astragalus californicus									CBR										2006-01-10	No Photo Available
Astragalus congdonii									CBR										2006-01-10	No Photo Available
Astragalus lentiginosus var. semotus									CBR										2006-01-10	No Photo Available
Astragalus panamintensis									CBR										2006-01-10	No Photo Available
Astragalus sepultipes									CBR										2006-01-10	No Photo Available
Astragalus serenoi var. serenoi									CBR										2006-01-10	No Photo Available
Astragalus trichopodus var. trichopodus									CBR										2006-01-10	No Photo Available
Arnica dealbata									CBR										2006-01-10	No Photo Available
Acacia smallii									CBR										2006-01-10	No Photo Available
Allium monticola									CBR										2006-01-10	No Photo Available
Arctostaphylos pacifica	Pacific manzanita	Ericaceae	evergreen shrub	Feb-Apr	None	CE	G1	S1	1B.1	SB_UCSC	Improper burning regime, Non-native plant impacts, ORV activity, Other	Chaparral, Coastal scrub		330	330	1085	1085	Yes	1974-01-01	No Photo Available
Arctostaphylos pseudopungens									CBR										2006-01-10	No Photo Available
Arctostaphylos pungens ssp. chaloneorum									CBR										2006-01-10	No Photo Available
Arctostaphylos uva-ursi var. marinensis									CBR										2006-01-10	No Photo Available
Arctostaphylos uva-ursi ssp. monoensis									CBR										2006-01-10	No Photo Available
Angelica arguta									CBR										2006-01-10	No Photo Available
Agrostis clivicola var. clivicola									CBR										2006-01-10	No Photo Available
Agrostis clivicola var. punta-reyesensis									CBR										2006-01-10	No Photo Available
Asclepias cryptoceras ssp. cryptoceras									CBR										2006-01-10	No Photo Available
Allium monticola var. keckii									CBR										2006-01-10	No Photo Available
Arabis lignifera									CBR										2006-01-10	No Photo Available
Agrostis aristiglumis									CBR										2006-01-10	No Photo Available
Acacia minuta ssp. minuta									CBR										2006-01-10	No Photo Available
Aster paludicola									CBR										2006-01-10	No Photo Available
Achillea millefolium var. gigantea									CBR										2006-01-10	No Photo Available
Argemone munita ssp. robusta									CBR										2006-01-10	No Photo Available
Astragalus lentiginosus var. chartaceus									CBR										2006-01-10	No Photo Available
Arctostaphylos manzanita ssp. glaucescens									CBR										2006-01-10	No Photo Available
Asclepias giffordii									CBR										2006-01-10	No Photo Available
Achnatherum stillmanii									CBR										2006-01-10	No Photo Available
Ambrosia ambrosioides									CBR										2006-01-10	No Photo Available
Ambrosia eriocentra									CBR										2006-01-10	No Photo Available
Amphipappus fremontii var. fremontii									CBR										2006-01-10	No Photo Available
Antirrhinum cornutum									CBR										2006-01-10	No Photo Available
Arabis suffrutescens var. horizontalis									CBR										2006-01-10	No Photo Available
Arctostaphylos glandulosa ssp. adamsii									CBR										2006-01-10	No Photo Available
Arctostaphylos glandulosa ssp. glaucomollis									CBR										2006-01-10	No Photo Available
Arctostaphylos glandulosa ssp. mollis									CBR										2006-01-10	No Photo Available
Arctostaphylos glandulosa ssp. zacaensis									CBR										2006-01-10	No Photo Available
Arctostaphylos parryana ssp. parryana									CBR										2006-01-10	No Photo Available
Arctostaphylos stanfordiana ssp. stanfordiana									CBR										2006-01-10	No Photo Available
Artemisia michauxiana									CBR										2006-01-10	No Photo Available
Astragalus calycosus var. calycosus									CBR										2006-01-10	No Photo Available
Astragalus casei									CBR										2006-01-10	No Photo Available
Astragalus douglasii var. parishii									CBR										2006-01-10	No Photo Available
Astragalus trichopodus var. lonchus									CBR										2006-01-10	No Photo Available
Aliciella hutchinsifolia									CBR										2006-01-10	No Photo Available
Arabis serpentinicola									CBR										2006-01-10	No Photo Available
Arnica sororia									CBR										2006-01-10	No Photo Available
Antennaria umbrinella									CBR										2006-01-10	No Photo Available
Artemisia tridentata ssp. wyomingensis									CBR										2006-01-10	No Photo Available
Astragalus acutirostris									CBR										2006-01-10	No Photo Available
Aliciella triodon	coyote gilia	Polemoniaceae	annual herb	Apr-Jun	None	None	G5	S2	2B.2		Foot traffic/trampling, Grazing, Non-native animal impacts	Great Basin scrub, Pinyon and juniper woodland	Sandy (sometimes)	610	1700	2000	5580		2006-10-04	© 2020 Steve Matson
Astragalus hornii var. hornii	Horn's milk-vetch	Fabaceae	annual herb	May-Oct	None	None	GUT1	S1	1B.1	BLM_S	Agriculture, Development, Other	Meadows and seeps, Playas	Alkaline, Lake Margins	60	850	195	2790		2006-12-01	No Photo Available
Ambrosia monogyra	singlewhorl burrobrush	Asteraceae	perennial shrub	Aug-Nov	None	None	G5	S2	2B.2	SB_CRES	Grazing, Non-native plant impacts, Other, Road/trail construction/maint.	Chaparral, Sonoran desert scrub	Sandy	10	500	35	1640		2007-02-21	© 2014 Keir Morse
Acanthoscyphus parishii var. parishii	Parish's oxytheca	Polygonaceae	annual herb	Jun-Sep	None	None	G4?T3T4	S3S4	4.2	SB_CalBG/RSABG		Chaparral, Lower montane coniferous forest	Gravelly (sometimes), Sandy (sometimes)	1220	2600	4005	8530	Yes	2007-04-05	© 2014 Keir Morse
Amsinckia douglasiana	Douglas' fiddleneck	Boraginaceae	annual herb	Mar-May	None	None	G4	S4	4.2	SB_CalBG/RSABG; SB_SBBG		Cismontane woodland, Valley and foothill grassland	Dry	0	1950	0	6400	Yes	2007-08-20	© 2013 Chris Winchell
Atriplex pusilla	smooth saltbush	Chenopodiaceae	annual herb	Jun-Sep	None	None	G4	SH	2B.1			Great Basin scrub, Meadows and seeps (hot springs)	Alkaline	1300	2000	4265	6560		2007-08-28	No Photo Available
Aldama purisimae	La Purisima viguiera	Asteraceae	shrub	Apr-Sep	None	None	G4	S1	2B.3		Improper burning regime	Chaparral, Coastal bluff scrub		365	425	1200	1395		2007-09-05	No Photo Available
Astragalus kentrophyta var. ungulatus	spiny milk-vetch	Fabaceae	perennial herb	Jun	None	None	G5T3T4	S1	2B.2	SB_CalBG/RSABG	Grazing, Logging	Pinyon and juniper woodland		2149	2149	7050	7050		2008-02-05	No Photo Available
Astragalus tidestromii	Tidestrom's milk-vetch	Fabaceae	perennial herb	(Jan)Apr-Jul	None	None	G4	S2	2B.2	SB_CalBG/RSABG; USFS_S	Biocides, Development, Erosion/runoff, Grazing, Mining, Non-native animal impacts, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint.	Mojavean desert scrub	Carbonate, Gravelly (sometimes), Sandy (sometimes)	600	1785	1970	5855		2009-01-06	No Photo Available
Arctostaphylos ohloneana	Ohlone manzanita	Ericaceae	evergreen shrub	Feb-Mar	None	None	G1	S1	1B.1	SB_CalBG/RSABG; SB_USDA	Disease, Road/trail construction/maint.	Closed-cone coniferous forest, Coastal scrub		450	530	1475	1740	Yes	2009-04-02	No Photo Available
Allium punctum	dotted onion	Alliaceae	perennial bulbiferous herb	Apr-May	None	None	G3	S1	2B.2			Pinyon and juniper woodland	Rocky	1200	1600	3935	5250		2009-09-08	© 2021 Sarah Tona
Atriplex argentea var. longitrichoma	Pahrump orache	Chenopodiaceae	annual herb	Apr-May	None	None	G5T2	S2	1B.1	BLM_S; SB_CalBG/RSABG	ORV activity	Mojavean desert scrub	Alkaline, Disturbed areas, Roadsides	640	850	2100	2790		2010-07-29	No Photo Available
Astragalus bernardinus	San Bernardino milk-vetch	Fabaceae	perennial herb	Apr-Jun	None	None	G3	S3	1B.2	BLM_S; SB_CalBG/RSABG; USFS_S	Other	Joshua tree "woodland", Pinyon and juniper woodland	Carbonate (often), Granitic (often)	900	2000	2955	6560	Yes	2011-02-16	No Photo Available
Astragalus sabulonum	gravel milk-vetch	Fabaceae	annual/perennial herb	Feb-Jun	None	None	G4G5	S2	2B.2		Agriculture, Development, Non-native plant impacts, ORV activity, Recreational use (non-ORV)	Desert dunes, Mojavean desert scrub, Sonoran desert scrub	Flats, Gravelly (sometimes), Roadsides, Sandy (usually), Washes	-60	930	-195	3050		2011-10-19	No Photo Available
Arctostaphylos glandulosa ssp. leucophylla									CBR										2011-11-29	No Photo Available
Astragalus nyensis	Nye milk-vetch	Fabaceae	annual herb	Apr-May	None	None	G3?	S1	1B.1	BLM_S; SB_CalBG/RSABG	Development, Non-native plant impacts, ORV activity	Mojavean desert scrub	Alkaline (sometimes), Gravelly, Sandy	790	815	2590	2675		2011-12-27	No Photo Available
Allium abramsii	Abrams' onion	Alliaceae	perennial bulbiferous herb	May-Jul	None	None	G3	S3	1B.2	SB_SBBG	Foot traffic/trampling	Lower montane coniferous forest, Upper montane coniferous forest	Granitic (often)	885	3050	2905	10005	Yes	2012-03-13	© 2018 Steve Matson
Agrostis lacuna-vernalis	vernal pool bent grass	Poaceae	annual herb	Apr-May	None	None	G1	S1	1B.1	BLM_S; SB_SBBG		Vernal pools (mima mounds)		115	145	375	475	Yes	2012-06-14	© 2019 Aaron Schusteff
Artemisia tripartita ssp. tripartita	threetip sagebrush	Asteraceae	perennial shrub	Aug	None	None	G5T4T5	S2	2B.3			Upper montane coniferous forest (openings)	Rocky, Volcanic	2200	2600	7220	8530		2012-08-20	No Photo Available
Archidium alternifolium									CBR										2014-02-11	No Photo Available
Antennaria sawyeri	Sawyer's pussy-toes	Asteraceae	perennial herb	Jun-Aug	None	None	G2	S2	1B.2		Foot traffic/trampling	Subalpine coniferous forest	Gravelly (sometimes), Rocky (sometimes), Serpentine	2075	2430	6810	7975	Yes	2015-10-29	©2015 Julie Kierstead Nelson
Abutilon abutiloides	shrubby Indian mallow	Malvaceae	perennial herb	Aug-Nov	None	None	G5	S1	2B.1		Other, Over-collecting/poaching	Sonoran desert scrub	Granitic, Rocky	855	900	2805	2955		2016-10-05	© 2014 Wynn Anderson
Adiantum shastense	Shasta maidenhair fern	Pteridaceae	perennial herb	Apr-Aug	None	None	G3	S3	4.3			Lower montane coniferous forest	Carbonate (sometimes)	330	1535	1085	5035	Yes	2016-11-18	©2015 Julie Kierstead
Aster sonomensis									CBR										2016-11-02	No Photo Available
Acer glabrum ssp. siskiyouense									CBR										2016-11-17	No Photo Available
Abutilon palmeri									CBR										2016-12-09	No Photo Available
Acaulon triquetrum									CBR										2016-12-09	No Photo Available
Acnatherum scribneri									CBR										2016-12-09	No Photo Available
Aconogonon davisiae var. glabrum									CBR										2016-12-09	No Photo Available
Aconogonon phytolaccifolium var. glabrum									CBR										2016-12-09	No Photo Available
Aliciella humillima									CBR										2016-12-09	No Photo Available
Aliciella micromeria									CBR										2016-12-09	No Photo Available
Allium lacunosum var. micranthum									CBR										2016-12-09	No Photo Available
Allium praecox									CBR										2016-12-09	No Photo Available
Amelanchier utahensis var. covillei									CBR										2016-12-09	No Photo Available
Amphipappus fremontii var. spinosus									CBR										2016-12-09	No Photo Available
Antennaria dioica									CBR										2016-12-09	No Photo Available
Aquilegia formosa var. hypolasia									CBR										2016-12-09	No Photo Available
Artemisia ludoviciana ssp. mexicana									CBR										2017-01-06	No Photo Available
Acalypha subviscida									CBR										2017-01-06	No Photo Available
Arceuthobium abietinum ssp. wiensii									CBR										2017-01-20	No Photo Available
Arabis davidsonii var. parva									CBR										2017-01-20	No Photo Available
Arceuthobium monticola									CBR										2017-01-20	No Photo Available
Arceuthobium siskiyouense									CBR										2017-01-20	No Photo Available
Arctostaphylos benitoensis									CBR										2017-01-20	No Photo Available
Arctostaphylos bowermaniae									CBR										2017-01-20	No Photo Available
Arctostaphylos manzanita ssp. wieslanderi									CBR										2017-01-26	No Photo Available
Arctostaphylos serpenticola									CBR										2017-02-13	No Photo Available
Arctostaphylos sp. nov. 1									CBR										2017-02-13	No Photo Available
Arctostaphylos tomentosa ssp. bracteosa									CBR										2017-02-13	No Photo Available
Arctostaphylos tomentosa ssp. crinita									CBR										2017-02-13	No Photo Available
Arctostaphylos tomentosa ssp. rosei									CBR										2017-02-13	No Photo Available
Arctostaphylos tomentosa ssp. tomentosa									CBR										2017-02-13	No Photo Available
Argemone munita ssp. argentea									CBR										2017-02-13	No Photo Available
Artemisia tridentata ssp. pauciflora									CBR										2017-02-14	No Photo Available
Asclepias latifolia									CBR										2017-02-14	No Photo Available
Asclepias linaria									CBR										2017-02-14	No Photo Available
Astragalus curtipes									CBR										2017-02-14	No Photo Available
Almutaster pauciflorus	alkali marsh aster	Asteraceae	perennial herb	Jun-Oct	None	None	G4	S1S2	2B.2	SB_CalBG/RSABG	Altered flood/tidal/hydrologic regime, Other, Road/trail construction/maint.	Meadows and seeps	Alkaline	240	800	785	2625		2017-03-14	© 2014 Richard Spellenberg
Allium howellii var. howellii	Howell's onion	Alliaceae	perennial bulbiferous herb	Mar-Apr	None	None	G3G4T3	S3	4.3			Valley and foothill grassland	Clay (sometimes), Serpentine (sometimes)	50	2200	165	7220	Yes	2017-04-04	© 2013 Neal Kramer
Allium howellii var. sanbenitense	San Benito onion	Alliaceae	perennial bulbiferous herb	Apr-May	None	None	G3G4T3	S3	1B.3	BLM_S; SB_SBBG	Grazing, ORV activity	Chaparral (openings), Valley and foothill grassland	Clay, Slopes (often)	390	1365	1280	4480	Yes	2017-04-04	© 2020 Ryan O'Dell
Anemone multifida var. multifida	cut-leaf anemone	Ranunculaceae	perennial herb	Apr-Jul	None	None	G5T5	S1S2	2B.2		Other	Lower montane coniferous forest, Subalpine coniferous forest, Upper montane coniferous forest	Carbonate (sometimes), Gravelly, Rocky, Volcanic (sometimes)	1700	2750	5580	9025		2017-08-28	©2017 Dana York
Atriplex flavida	Carrizo Plain crownscale	Chenopodiaceae	annual herb	Mar-Jul	None	None	G3	S3	1B.3	SB_SBBG	Agriculture, Development, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint.	Chenopod scrub, Valley and foothill grassland, Vernal pools	Alkaline	585	605	1920	1985	Yes	2019-11-04	No Photo Available
Astragalus agrestis	field milk-vetch	Fabaceae	perennial herb	Apr-Jul(Aug)	None	None	G5	S2	2B.2	BLM_S	Agriculture, Foot traffic/trampling, Grazing, Other	Great Basin scrub (vernally mesic), Meadows and seeps (vernally mesic)	Vernally Mesic	1560	1650	5120	5415		2001-01-01	No Photo Available
Astragalus tephrodes var. brachylobus									CBR										2021-03-15	No Photo Available
Allium geyeri var. tenerum	bulbil onion	Alliaceae	perennial bulbiferous herb	May	None	None	G4G5T4T5	S1	2B.1			Meadows and seeps	Rocky, Streambanks	1495	1495	4905	4905		2021-02-03	© 2011 Ryan Batten
Aphyllon robbinsii	Robbins' broomrape	Orobanchaceae	annual herb (achlorophyllous)	Apr-Jul	None	None	G1	S1	1B.1		Development, Foot traffic/trampling, Non-native plant impacts, Other	Coastal bluff scrub	Rocky, Sandy	0	100	0	330		2023-03-28	© 2017 Dylan Neubauer
Allium incomptum	Minnesota Mountain onion	Alliaceae	perennial bulbiferous herb	Apr-May	None	None	G1	S1	1B.3			Chaparral, Lower montane coniferous forest	Gravelly, Openings, Rocky	1185	1295	3890	4250		2023-04-05	© 2023 Julie Kierstead
Agave simplex	lonesome agave	Agavaceae	perennial leaf	May-Jul	None	None	G4TNR	S2	2B.3			Mojavean desert scrub, Pinyon and juniper woodland, Sonoran desert scrub	Carbonate, Granitic, Rocky, Shale, Volcanic	320	1680	1050	5510		2023-03-10	No Photo Available
Aphyllon epigalium ssp. notocalifornicum	Southern California galium broomrape	Orobanchaceae	annual/perennial herb (parasitic)	Jun(Jul)	None	None	G4T2	S2	1B.3			Cismontane woodland, Lower montane coniferous forest, Riparian forest		1200	1535	3935	5035		2023-08-09	No Photo Available
Astragalus lentiginosus var. carinatus									CBR										2024-02-29	No Photo Available
Atriplex natrophila									CBR										2024-02-29	No Photo Available
Atriplex patula ssp. hastata									CBR										2024-02-29	No Photo Available
Aster siskiyouensis									CBR										2024-03-06	No Photo Available
Aphyllon californicum ssp. condensum									CBR										2024-03-19	No Photo Available
Aphyllon californicum ssp. feudgei									CBR										2024-03-19	No Photo Available
Aphyllon californicum ssp. grande									CBR										2024-03-19	No Photo Available
Aphyllon californicum ssp. grayanum									CBR										2024-03-19	No Photo Available
Aphyllon californicum ssp. jepsonii									CBR										2024-03-19	No Photo Available