CNPS

CNPS Rare Plant Inventory


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120 matches found. Click on scientific name for details

Search Criteria: , CRPR is one of [1B] , County or Island is one of [MNT]

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
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 Photo of Arctostaphylos cruzensis
© 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 Photo of Arctostaphylos edmundsii
© 2006 Steve Matson
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 Photo of Arctostaphylos pajaroensis
Lynn Overtree
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
Calyptridium parryi var. hesseae Santa Cruz Mountains pussypaws Montiaceae annual herb May-Aug None None G3G4T2 S2 1B.1 BLM_S; SB_UCBG Development, Non-native plant impacts, ORV activity, Other Chaparral, Cismontane woodland Gravelly (sometimes), Openings, Sandy (sometimes) 305 1530 1000 5020 Yes 1984-01-01
No Photo Available
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 Photo of Abies bracteata
© 2019 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 Photo of Agrostis blasdalei
© 2001 Doreen L. Smith
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 Photo of Allium hickmanii
© 2017 Dylan Neubauer
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 Photo of Arctostaphylos hookeri ssp. hookeri
© 2011 Chris Winchell
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 Photo of Arctostaphylos montereyensis
© 2018 Susan McDougall
Camissonia benitensis San Benito evening-primrose Onagraceae annual herb Apr-Jun FD None G2 S2 1B.1 BLM_S; SB_SBBG; SB_UCBG Altered flood/tidal/hydrologic regime, Development, Grazing, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint. Chaparral, Cismontane woodland, Valley and foothill grassland Carbonate (sometimes), Gravelly (sometimes), Serpentine 600 1280 1970 4200 Yes 1974-01-01 Photo of Camissonia benitensis
© 2005 David A Tharp
Deinandra halliana Hall's tarplant Asteraceae annual herb (Mar)Apr-May None None G3 S3 1B.1 BLM_S; SB_CalBG/RSABG; SB_SBBG Agriculture, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint. Chenopod scrub, Cismontane woodland, Valley and foothill grassland Alkaline (sometimes), Clay 260 950 855 3115 Yes 1974-01-01
No Photo Available
Clarkia jolonensis Jolon clarkia Onagraceae annual herb Apr-Jun None None G2 S2 1B.2 SB_SBBG; USFS_S Dam/Inundation, Development, Erosion/runoff, Foot traffic/trampling, Non-native plant impacts, Other, Road/trail construction/maint. Chaparral, Cismontane woodland, Coastal scrub, Riparian woodland 20 660 65 2165 Yes 1980-01-01
No Photo Available
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
Delphinium recurvatum recurved larkspur Ranunculaceae perennial herb Mar-Jun None None G2? S2 1B.2 BLM_S; SB_SBBG Agriculture, Dam/Inundation, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Landfill, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter Chenopod scrub, Cismontane woodland, Valley and foothill grassland Alkaline 3 790 10 2590 Yes 1988-01-01
No Photo Available
Delphinium umbraculorum umbrella larkspur Ranunculaceae perennial herb Apr-Jun None None G3 S3 1B.3 BLM_S; SB_CalBG/RSABG; USFS_S Grazing, Improper burning regime, Non-native plant impacts, Road/trail construction/maint. Chaparral, Cismontane woodland 400 1600 1310 5250 Yes 1974-01-01 Photo of Delphinium umbraculorum
© 2016 Amelia Ryan
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
Camissoniopsis hardhamiae Hardham's evening-primrose Onagraceae annual herb Mar-May None None G2 S2 1B.2 BLM_S; USFS_S Biocides, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint. Chaparral, Cismontane woodland Burned areas (sometimes), Carbonate, Disturbed areas (sometimes), Sandy 140 945 460 3100 Yes 1980-01-01
No Photo Available
Carex obispoensis San Luis Obispo sedge Cyperaceae perennial cespitose herb Apr-Jun None None G3? S3? 1B.2 BLM_S; SB_SBBG; USFS_S Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Feral pigs, Grazing, Improper burning regime, Military operations, Mining, Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing Chaparral, Closed-cone coniferous forest, Coastal prairie, Coastal scrub, Valley and foothill grassland Clay (often), Gabbroic (sometimes), Seeps (often), Serpentine (often) 10 820 35 2690 Yes 1974-01-01
No Photo Available
Aristocapsa insignis Indian Valley spineflower Polygonaceae annual herb May-Sep None None G1 S1 1B.2 BLM_S Dam/Inundation Cismontane woodland (sandy) 300 600 985 1970 Yes 1980-01-01
No Photo Available
Hooveria purpurea var. purpurea Santa Lucia purple amole Agavaceae perennial bulbiferous herb Apr-Jun FT None G2T2 S2 1B.1 SB_SBBG Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint. Chaparral, Cismontane woodland, Valley and foothill grassland Clay, Gravelly 205 385 675 1265 Yes 1974-01-01 Photo of Hooveria purpurea var. purpurea
© 2006 Aaron Schusteff
Chorizanthe breweri Brewer's spineflower Polygonaceae annual herb Apr-Aug None None G3 S3 1B.3 BLM_S; SB_SBBG; USFS_S Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Chaparral, Cismontane woodland, Closed-cone coniferous forest, Coastal scrub Gravelly (sometimes), Rocky (sometimes), Serpentine 45 800 150 2625 Yes 1980-01-01
No Photo Available
Chorizanthe pungens var. pungens Monterey spineflower Polygonaceae annual herb Apr-Jun(Jul-Aug) FT None G2T2 S2 1B.2 SB_SBBG; SB_UCBG Agriculture, Biocides, Development, Erosion/runoff, Foot traffic/trampling, Improper burning regime, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Wood cutting or brush clearing Chaparral (maritime), Cismontane woodland, Coastal dunes, Coastal scrub, Valley and foothill grassland Sandy 3 450 10 1475 Yes 1980-01-01
No Photo Available
Chorizanthe rectispina straight-awned spineflower Polygonaceae annual herb Apr-Jul None None G2 S2 1B.2 BLM_S; SB_SBBG; USFS_S Agriculture, Biocides, Development, Disking, Grazing, Improper burning regime, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Wood cutting or brush clearing Chaparral, Cismontane woodland, Coastal scrub 85 1035 280 3395 Yes 1974-01-01 Photo of Chorizanthe rectispina
© 1982 California Native Plant Society
Cirsium occidentale var. compactum compact cobwebby thistle Asteraceae perennial herb Apr-Jun None None G3G4T2 S2 1B.2 BLM_S Development, Erosion/runoff, Grazing, Non-native plant impacts, Road/trail construction/maint. Chaparral, Coastal dunes, Coastal prairie, Coastal scrub 5 150 15 490 Yes 1974-01-01
No Photo Available
Collinsia multicolor San Francisco collinsia Plantaginaceae annual herb (Feb)Mar-May None None G2 S2 1B.2 BLM_S; SB_CalBG/RSABG; SB_UCSC Dam/Inundation, Development, Erosion/runoff, Foot traffic/trampling, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint. Closed-cone coniferous forest, Coastal scrub Serpentine (sometimes) 30 275 100 900 Yes 1974-01-01
No Photo Available
Cordylanthus rigidus ssp. littoralis seaside bird's-beak Orobanchaceae annual herb (hemiparasitic) Apr-Oct None CE G5T2 S2 1B.1 BLM_S; SB_CalBG/RSABG; SB_SBBG Development, Foot traffic/trampling, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter Chaparral (maritime), Cismontane woodland, Closed-cone coniferous forest, Coastal dunes, Coastal scrub Disturbed areas (often), Sandy 0 515 0 1690 Yes 1980-01-01
No Photo Available
Hesperocyparis goveniana Gowen cypress Cupressaceae perennial evergreen tree FT None G1 S1 1B.2 IUCN_EN; SB_CalBG/RSABG; SB_UCSC Development, Improper burning regime, Non-native plant impacts Chaparral (maritime), Closed-cone coniferous forest 30 300 100 985 Yes 1980-01-01 Photo of Hesperocyparis goveniana
© 2016 Susan McDougall
Hesperocyparis macrocarpa Monterey cypress Cupressaceae perennial evergreen tree None None G1 S1 1B.2 IUCN_VU; SB_CalBG/RSABG Development, Foot traffic/trampling Closed-cone coniferous forest 10 30 35 100 Yes 1980-01-01 Photo of Hesperocyparis macrocarpa
© 2021 Scot Loring
Delphinium californicum ssp. interius Hospital Canyon larkspur Ranunculaceae perennial herb Apr-Jun None None G3T3 S3 1B.2 BLM_S; SB_CalBG/RSABG Agriculture, Feral pigs, Grazing, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing Chaparral (openings), Cismontane woodland (mesic), Coastal scrub 195 1095 640 3595 Yes 1984-01-01
No Photo Available
Delphinium hutchinsoniae Hutchinson's larkspur Ranunculaceae perennial herb Mar-Jun None None G2 S2 1B.2 SB_UCSC; USFS_S Biocides, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Non-native plant impacts, Other, Over-collecting/poaching, Road/trail construction/maint. Broadleafed upland forest, Chaparral, Coastal prairie, Coastal scrub 0 427 0 1400 Yes 1974-01-01
No Photo Available
Eriastrum luteum yellow-flowered eriastrum Polemoniaceae annual herb May-Jun None None G2 S2 1B.2 BLM_S; USFS_S Dam/Inundation, Development, Erosion/runoff, Grazing, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Wood cutting or brush clearing Broadleafed upland forest, Chaparral, Cismontane woodland Gravelly (sometimes), Sandy (sometimes) 290 1000 950 3280 Yes 1974-01-01
No Photo Available
Ericameria fasciculata Eastwood's goldenbush Asteraceae perennial evergreen shrub Jul-Oct None None G2 S2 1B.1 BLM_S; SB_UCSC Development, Erosion/runoff, Foot traffic/trampling, Improper burning regime, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Wood cutting or brush clearing Chaparral (maritime), Closed-cone coniferous forest, Coastal dunes, Coastal scrub Openings, Sandy 30 275 100 900 Yes 1974-01-01
No Photo Available
Collinsia antonina San Antonio collinsia Plantaginaceae annual herb Mar-May None None G2 S2 1B.2 BLM_S Foot traffic/trampling, Grazing, Other Chaparral, Cismontane woodland 280 365 920 1200 Yes 1974-01-01
No Photo Available
Pogogyne clareana Santa Lucia mint Lamiaceae annual herb Apr-Jul None CE G2 S2 1B.2 SB_SBBG Grazing, Military operations, ORV activity, Road/trail construction/maint. Chaparral, Cismontane woodland, Riparian woodland Streambanks 300 630 985 2065 Yes 1974-01-01
No Photo Available
Sanicula maritima adobe sanicle Apiaceae perennial herb Feb-May None CR G2 S2 1B.1 SB_SBBG; USFS_S Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Chaparral, Coastal prairie, Meadows and seeps, Valley and foothill grassland Clay, Serpentine 30 240 100 785 Yes 1974-01-01
No Photo Available
Piperia yadonii Yadon's rein orchid Orchidaceae perennial herb (Feb)May-Aug FE None G1 S1 1B.1 Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing Chaparral (maritime), Closed-cone coniferous forest, Coastal bluff scrub Sandy 10 510 35 1675 Yes 1994-01-01
No Photo Available
Eriogonum butterworthianum Butterworth's buckwheat Polygonaceae perennial herb Jun-Jul None CR G2 S2 1B.3 BLM_S; SB_UCSC; USFS_S Foot traffic/trampling, Other Chaparral (sandstone), Valley and foothill grassland Sandy 585 740 1920 2430 Yes 1974-01-01
No Photo Available
Eriogonum eastwoodianum Eastwood's buckwheat Polygonaceae annual herb May-Sep None None G2 S2 1B.3 SB_SBBG Cismontane woodland, Valley and foothill grassland Clay, Sandy, Shale, Talus 200 1000 655 3280 Yes 1974-01-01
No Photo Available
Eriogonum nortonii Pinnacles buckwheat Polygonaceae annual herb (Apr)Aug(Sep)May-Jun None None G2 S2 1B.3 BLM_S Development, Foot traffic/trampling, Grazing, Improper burning regime, Mining, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing Chaparral, Valley and foothill grassland Burned areas (often), Sandy 300 975 985 3200 Yes 1974-01-01
No Photo Available
Eriogonum temblorense Temblor buckwheat Polygonaceae annual herb (Apr)May-Sep None None G2 S2 1B.2 BLM_S Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts Valley and foothill grassland (clay, sandstone) 300 1000 985 3280 Yes 1974-01-01
No Photo Available
Erysimum ammophilum sand-loving wallflower Brassicaceae perennial herb Feb-Jun(Jul-Aug) None None G2 S2 1B.2 BLM_S; SB_CRES; SB_SBBG Agriculture, Development, Erosion/runoff, Foot traffic/trampling, Improper burning regime, Mining, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint. Chaparral (maritime), Coastal dunes, Coastal scrub Openings, Sandy 0 60 0 195 Yes 1974-01-01
No Photo Available
Fritillaria falcata talus fritillary Liliaceae perennial bulbiferous herb Mar-May None None G2 S2 1B.2 BLM_S; IUCN_EN; SB_CalBG/RSABG; SB_SBBG; USFS_S Feral pigs, ORV activity, Other, Over-collecting/poaching, Road/trail construction/maint. Chaparral, Cismontane woodland, Lower montane coniferous forest Serpentine, Talus (often) 300 1525 985 5005 Yes 1974-01-01 Photo of Fritillaria falcata
© 2013 Aaron Schusteff
Fritillaria liliacea fragrant fritillary Liliaceae perennial bulbiferous herb Feb-Apr None None G2 S2 1B.2 SB_CalBG/RSABG; USFS_S Dam/Inundation, Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Insufficient population/stand size, Non-native animal impacts, Non-native plant impacts, ORV activity, Other, Over-collecting/poaching, Recreational use (non-ORV), Road/trail construction/maint. Cismontane woodland, Coastal prairie, Coastal scrub, Valley and foothill grassland Serpentine (often) 3 410 10 1345 Yes 1974-01-01 Photo of Fritillaria liliacea
© 2004 Carol W. Witham
Fritillaria ojaiensis Ojai fritillary Liliaceae perennial bulbiferous herb Feb-May None None G3 S3 1B.2 BLM_S; SB_SBBG; USFS_S Development, Erosion/runoff, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing Broadleafed upland forest (mesic), Chaparral, Cismontane woodland, Lower montane coniferous forest Rocky 225 998 740 3275 Yes 1980-01-01 Photo of Fritillaria ojaiensis
© 2010 David Magney
Fritillaria viridea San Benito fritillary Liliaceae perennial bulbiferous herb Mar-May None None G2 S2 1B.2 BLM_S; SB_UCSC; USFS_S Erosion/runoff, Feral pigs, Foot traffic/trampling, Military operations, Mining, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Chaparral, Cismontane woodland Roadsides (sometimes), Rocky (sometimes), Serpentine, Slopes, Streambanks (sometimes) 200 1525 655 5005 Yes 1974-01-01 Photo of Fritillaria viridea
© 2010 Aaron Schusteff
Galium californicum ssp. luciense Cone Peak bedstraw Rubiaceae perennial herb Mar-Sep None None G5T3 S3 1B.3 USFS_S Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Non-native plant impacts, Other, Road/trail construction/maint. Broadleafed upland forest, Chaparral, Cismontane woodland, Lower montane coniferous forest Rocky (often), Serpentine (rarely) 400 1525 1310 5005 Yes 1974-01-01 Photo of Galium californicum ssp. luciense
© 2005 Dean Wm. Taylor
Galium clementis Santa Lucia bedstraw Rubiaceae perennial herb (Apr)May-Jul None None G2 S2 1B.3 USFS_S Foot traffic/trampling, Non-native plant impacts Lower montane coniferous forest, Upper montane coniferous forest Granitic (sometimes), Rocky, Serpentine (sometimes) 1130 1780 3710 5840 Yes 1974-01-01 Photo of Galium clementis
© 2005 Dean Wm. Taylor, Ph.D.
Galium hardhamiae Hardham's bedstraw Rubiaceae perennial herb Apr-Oct None None G3 S3 1B.3 BLM_S; USFS_S Military operations, ORV activity, Road/trail construction/maint. Chaparral, Closed-cone coniferous forest Serpentine 395 975 1295 3200 Yes 1984-01-01 Photo of Galium hardhamiae
© 1984 California Native Plant Society
Gilia tenuiflora ssp. arenaria Monterey gilia Polemoniaceae annual herb Apr-Jun FE CT G3G4T2 S2 1B.2 SB_CalBG/RSABG Biocides, Development, Erosion/runoff, Foot traffic/trampling, Landfill, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Chaparral (maritime), Cismontane woodland, Coastal dunes, Coastal scrub Openings, Sandy 0 45 0 150 Yes 1980-01-01 Photo of Gilia tenuiflora ssp. arenaria
© 2021 Neal Kramer
Holocarpha macradenia Santa Cruz tarplant Asteraceae annual herb Jun-Oct FT CE G1 S1 1B.1 SB_CalBG/RSABG; SB_UCBG Agriculture, Development, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint. Coastal prairie, Coastal scrub, Valley and foothill grassland Clay (often), Sandy 10 220 35 720 Yes 1974-01-01 Photo of Holocarpha macradenia
© 2011 Dylan Neubauer
Horkelia cuneata var. sericea Kellogg's horkelia Rosaceae perennial herb Apr-Sep None None G4T1? S1? 1B.1 SB_CalBG/RSABG; SB_UCSC; USFS_S Development, Erosion/runoff, Insufficient population/stand size, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint. Chaparral (maritime), Closed-cone coniferous forest, Coastal dunes, Coastal scrub Gravelly (sometimes), Openings, Sandy (sometimes) 10 200 35 655 Yes 1988-01-01 Photo of Horkelia cuneata var. sericea
© 2018 Neal Kramer
Horkelia marinensis Point Reyes horkelia Rosaceae perennial herb May-Sep None None G2 S2 1B.2 BLM_S; SB_CalBG/RSABG; SB_UCSC Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Coastal dunes, Coastal prairie, Coastal scrub Sandy 5 755 15 2475 Yes 1974-01-01 Photo of Horkelia marinensis
© 2017 John Doyen
Lasthenia conjugens Contra Costa goldfields Asteraceae annual herb Mar-Jun FE None G1 S1 1B.1 SB_UCBG Agriculture, Altered flood/tidal/hydrologic regime, Development, Disking, Erosion/runoff, Feral pigs, Grazing, Landfill, Military operations, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Wood cutting or brush clearing Cismontane woodland, Playas (alkaline), Valley and foothill grassland, Vernal pools Mesic 0 470 0 1540 Yes 1974-01-01 Photo of Lasthenia conjugens
© 2013 Neal Kramer
Layia carnosa beach layia Asteraceae annual herb Mar-Jul FT CE G2 S2 1B.1 SB_CalBG/RSABG; SB_SBBG Biocides, Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Military operations, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint. Coastal dunes, Coastal scrub (sandy) 0 60 0 195 1988-01-01 Photo of Layia carnosa
© 2007 Aaron Schusteff
Legenere limosa legenere Campanulaceae annual herb Apr-Jun None None G2 S2 1B.1 BLM_S; SB_UCBG Agriculture, Development, Disease, Disking, Feral pigs, Foot traffic/trampling, Grazing, Landfill, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Vernal pools 1 880 5 2885 Yes 1974-01-01 Photo of Legenere limosa
©2000 John Game
Lupinus tidestromii Tidestrom's lupine Fabaceae perennial rhizomatous herb Apr-Jun FE CE G1 S1 1B.1 SB_CalBG/RSABG Development, Erosion/runoff, Foot traffic/trampling, Grazing, Hybridization, Non-native plant impacts, Other, Recreational use (non-ORV) Coastal dunes 0 100 0 330 Yes 1974-01-01
No Photo Available
Madia radiata showy golden madia Asteraceae annual herb Mar-May None None G3 S3 1B.1 BLM_S; SB_CalBG/RSABG; SB_SBBG Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Road/trail construction/maint., Vandalism/dumping/litter Cismontane woodland, Valley and foothill grassland 25 1215 80 3985 Yes 1988-01-01
No Photo Available
Malacothamnus abbottii Abbott's bushmallow Malvaceae perennial deciduous shrub May-Oct None None G1 S1 1B.1 SB_UCSC Agriculture, Development, Erosion/runoff, Grazing, Mining, Other, Road/trail construction/maint. Riparian scrub 135 490 445 1610 Yes 1974-01-01 Photo of Malacothamnus abbottii
© 2018 Keir Morse
Malacothamnus aboriginum Indian Valley bushmallow Malvaceae perennial deciduous shrub Apr-Oct None None G3 S3 1B.2 BLM_S; SB_CalBG/RSABG; SB_SBBG Biocides, Grazing, Mining, Non-native plant impacts, ORV activity, Road/trail construction/maint. Chaparral, Cismontane woodland Burned areas (often), Granitic, Rocky 150 1700 490 5580 Yes 1974-01-01 Photo of Malacothamnus aboriginum
© 2009 Keir Morse
Malacothamnus involucratus Carmel Valley bushmallow Malvaceae perennial deciduous shrub Apr-Oct None None G3T2Q S2 1B.2 BLM_S; SB_UCSC; USFS_S Development, Grazing, Military operations, Road/trail construction/maint. Chaparral, Cismontane woodland, Coastal scrub 30 1100 100 3610 Yes 1974-01-01 Photo of Malacothamnus involucratus
© 2017 Keir Morse
Malacothamnus lucianus Arroyo Seco bushmallow Malvaceae perennial deciduous shrub (Apr)May-Aug None None G3T1Q S1 1B.2 BLM_S; SB_CalBG/RSABG; SB_SBBG; USFS_S Altered flood/tidal/hydrologic regime, Erosion/runoff, Grazing, Non-native plant impacts, Other, Road/trail construction/maint. Chaparral, Cismontane woodland, Meadows and seeps 5 915 15 3000 Yes 1974-01-01 Photo of Malacothamnus lucianus
© 2017 Keir Morse
Malacothrix saxatilis var. arachnoidea Carmel Valley malacothrix Asteraceae perennial rhizomatous herb (Mar)Jun-Dec None None G5T2 S2 1B.2 BLM_S; USFS_S Dam/Inundation, Feral pigs, Grazing, Improper burning regime, Military operations, Non-native plant impacts Chaparral (rocky), Coastal scrub 25 1036 80 3400 Yes 1974-01-01
No Photo Available
Stebbinsoseris decipiens Santa Cruz microseris Asteraceae annual herb Apr-May None None G2 S2 1B.2 SB_CalBG/RSABG; SB_UCSC Feral pigs, Grazing, Improper burning regime, Military operations, Non-native plant impacts, Other, Road/trail construction/maint. Broadleafed upland forest, Chaparral, Closed-cone coniferous forest, Coastal prairie, Coastal scrub, Valley and foothill grassland Openings, Serpentine (sometimes) 10 500 35 1640 Yes 1974-01-01
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
Monardella palmeri Palmer's monardella Lamiaceae perennial rhizomatous herb Jun-Aug None None G2 S2 1B.2 BLM_S; SB_UCSC; USFS_S Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Non-native plant impacts, Other, Road/trail construction/maint., Vandalism/dumping/litter Chaparral, Cismontane woodland Serpentine 200 800 655 2625 Yes 1974-01-01 Photo of Monardella palmeri
© 2012 Chris Winchell
Pedicularis dudleyi Dudley's lousewort Orobanchaceae perennial herb Apr-Jun None CR G2 S2 1B.2 SB_CalBG/RSABG; SB_UCSC; USFS_S Development, Disease, Erosion/runoff, Foot traffic/trampling, Improper burning regime, Insufficient population/stand size, Logging, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing Chaparral (maritime), Cismontane woodland, North Coast coniferous forest, Valley and foothill grassland 60 900 195 2955 Yes 1974-01-01
No Photo Available
Pentachaeta exilis ssp. aeolica San Benito pentachaeta Asteraceae annual herb Mar-May None None G5T2 S2 1B.2 BLM_S; SB_SBBG; USFS_S Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint. Cismontane woodland, Valley and foothill grassland 480 855 1575 2805 Yes 1980-01-01
No Photo Available
Potentilla hickmanii Hickman's cinquefoil Rosaceae perennial herb Apr-Aug FE CE G1 S1 1B.1 SB_UCBG Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Foot traffic/trampling, Non-native plant impacts, Other, Recreational use (non-ORV) Closed-cone coniferous forest, Coastal bluff scrub, Marshes and swamps (freshwater), Meadows and seeps (vernally mesic) 10 149 35 490 Yes 1974-01-01
No Photo Available
Triteleia ixioides ssp. cookii Cook's triteleia Themidaceae perennial bulbiferous herb May-Jun None None G5T2T3 S2S3 1B.3 BLM_S; SB_UCBG; USFS_S Feral pigs, Foot traffic/trampling, Improper burning regime, Non-native plant impacts, Other, Road/trail construction/maint. Cismontane woodland, Closed-cone coniferous forest Seeps, Serpentine 150 700 490 2295 Yes 1974-01-01
No Photo Available
Tropidocarpum capparideum caper-fruited tropidocarpum Brassicaceae annual herb Mar-Apr None None G1 S1 1B.1 SB_CalBG/RSABG; USFS_S Agriculture, Altered flood/tidal/hydrologic regime, Development, Grazing, Improper burning regime, Military operations, Non-native plant impacts, ORV activity Valley and foothill grassland (alkaline hills) 1 455 5 1495 Yes 1974-01-01
No Photo Available
Plagiobothrys uncinatus hooked popcornflower Boraginaceae annual herb Apr-May None None G2 S2 1B.2 BLM_S; USFS_S Feral pigs, Grazing, Improper burning regime, Military operations, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint. Chaparral (sandy), Cismontane woodland, Valley and foothill grassland 300 760 985 2495 Yes 1974-01-01
No Photo Available
Trifolium hydrophilum saline clover Fabaceae annual herb Apr-Jun None None G2 S2 1B.2 Agriculture, Biocides, Development, Disking, Grazing, Improper burning regime, Landfill, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter Marshes and swamps, Valley and foothill grassland (mesic, alkaline), Vernal pools 0 300 0 985 Yes 2001-01-01 Photo of Trifolium hydrophilum
© 2005 Dean Wm Taylor
Trifolium buckwestiorum Santa Cruz clover Fabaceae annual herb Apr-Oct None None G2 S2 1B.1 BLM_S; SB_SBBG; SB_UCSC; SB_USDA Development, Disease, Erosion/runoff, Feral pigs, Foot traffic/trampling, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint. Broadleafed upland forest, Cismontane woodland, Coastal prairie Gravelly 35 610 115 2000 Yes 1994-01-01
No Photo Available
Rosa pinetorum pine rose Rosaceae perennial shrub May-Jul None None G1Q S1 1B.2 Biocides, Development, Erosion/runoff, Foot traffic/trampling, Non-native plant impacts, Other, Road/trail construction/maint. Cismontane woodland, Closed-cone coniferous forest 2 945 5 3100 Yes 2001-01-01
No Photo Available
Pinus radiata Monterey pine Pinaceae perennial evergreen tree None None G1 S1 1B.1 BLM_S; IUCN_EN; SB_CalBG/RSABG; SB_UCSC Development, Disease, Hybridization, Improper burning regime, Logging, Other Cismontane woodland, Closed-cone coniferous forest 25 185 80 605 1974-01-01
No Photo Available
Plagiobothrys chorisianus var. chorisianus Choris' popcornflower Boraginaceae annual herb Mar-Jun None None G3T1Q S1 1B.2 BLM_S; SB_UCSC Altered flood/tidal/hydrologic regime, Development, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint. Chaparral, Coastal prairie, Coastal scrub Mesic 3 160 10 525 Yes 1984-01-01
No Photo Available
Carlquistia muirii Muir's tarplant Asteraceae perennial rhizomatous herb Jul-Aug(Oct) None None G2 S2 1B.3 BLM_S; SB_CalBG/RSABG; USFS_S Development, Erosion/runoff, Foot traffic/trampling, Logging, Road/trail construction/maint. Chaparral (montane), Lower montane coniferous forest, Upper montane coniferous forest Granitic 755 2500 2475 8205 Yes 1980-01-01
No Photo Available
Sidalcea hickmanii ssp. hickmanii Hickman's checkerbloom Malvaceae perennial herb May-Jul None None G2T2 S2 1B.3 SB_SBBG; USFS_S Feral pigs, Foot traffic/trampling, Grazing, Military operations, Non-native plant impacts, Other, Road/trail construction/maint., Wood cutting or brush clearing Chaparral (openings), Cismontane woodland, Coastal bluff scrub 335 1220 1100 4005 Yes 1974-01-01
No Photo Available
Streptanthus albidus ssp. peramoenus most beautiful jewelflower Brassicaceae annual herb (Mar)Apr-Sep(Oct) None None G2T2 S2 1B.2 BLM_S; SB_CalBG/RSABG; SB_UCBG; USFS_S Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Insufficient population/stand size, Landfill, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Over-collecting/poaching, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Waterway bank protection/maintenance Chaparral, Cismontane woodland, Valley and foothill grassland Serpentine 95 1000 310 3280 Yes 1988-01-01 Photo of Streptanthus albidus ssp. peramoenus
© 1994 Robert E. Preston, Ph.D.
Trifolium polyodon Pacific Grove clover Fabaceae annual herb Apr-Jun(Jul) None CR G1 S1 1B.1 BLM_S; SB_USDA Altered flood/tidal/hydrologic regime, Biocides, Development, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint. Closed-cone coniferous forest, Coastal prairie, Meadows and seeps, Valley and foothill grassland Granitic (sometimes), Mesic 5 425 15 1395 Yes 1974-01-01
No Photo Available
Trifolium trichocalyx Monterey clover Fabaceae annual herb Apr-Jun FE CE G1 S1 1B.1 SB_UCBG; SB_USDA Development, Improper burning regime, Logging, Mining, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing Closed-cone coniferous forest (burned areas, openings, sandy) 30 305 100 1000 Yes 1974-01-01
No Photo Available
Baccharis plummerae ssp. glabrata San Simeon baccharis Asteraceae perennial deciduous shrub Jun None None G3T1 S1 1B.2 USFS_S Coastal scrub 50 480 165 1575 Yes 1994-01-01
No Photo Available
Calochortus fimbriatus late-flowered mariposa-lily Liliaceae perennial bulbiferous herb Jun-Aug None None G3 S3 1B.3 BLM_S; SB_SBBG; USFS_S Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Non-native plant impacts, Other, Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing Chaparral, Cismontane woodland, Riparian woodland Serpentine (sometimes) 275 1905 900 6250 Yes 1994-01-01
No Photo Available
Calycadenia villosa dwarf calycadenia Asteraceae annual herb May-Oct None None G3 S3 1B.1 BLM_S; SB_SBBG; USFS_S Agriculture, Dam/Inundation, Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Chaparral, Cismontane woodland, Meadows and seeps, Valley and foothill grassland Rocky 240 1350 785 4430 Yes 1994-01-01 Photo of Calycadenia villosa
© 2015 David Wolfson
Chorizanthe biloba var. immemora Hernandez spineflower Polygonaceae annual herb May-Aug(Sep) None None G3T1T2 S1S2 1B.2 BLM_S Chaparral, Cismontane woodland Clay (sometimes), Gravelly (often), Serpentine (usually) 425 1115 1395 3660 Yes 1994-01-01
No Photo Available
Eriogonum heermannii var. occidentale western Heermann's buckwheat Polygonaceae perennial deciduous shrub Jul-Oct None None G5T2 S2 1B.2 BLM_S; SB_UCSC Erosion/runoff, ORV activity Cismontane woodland (openings) Clay (rarely), Roadsides (usually), Serpentine (often), Shale (rarely), Slopes (rarely) 105 795 345 2610 Yes 1994-01-01
No Photo Available
Centromadia parryi ssp. congdonii Congdon's tarplant Asteraceae annual herb (Apr)May-Oct(Nov) None None G3T2 S2 1B.1 BLM_S; SB_CalBG/RSABG Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Development, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, Hybridization, Improper burning regime, Military operations, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Waterway bank protection/maintenance Valley and foothill grassland (alkaline) 0 230 0 755 Yes 1994-01-01
No Photo Available
Layia heterotricha pale-yellow layia Asteraceae annual herb Mar-Jun None None G2 S2 1B.1 BLM_S; SB_CalBG/RSABG; SB_SBBG; USFS_S Agriculture, Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint. Cismontane woodland, Coastal scrub, Pinyon and juniper woodland, Valley and foothill grassland Alkaline (sometimes), Clay (sometimes) 300 1705 985 5595 Yes 1994-01-01 Photo of Layia heterotricha
© 2003 Christopher L. Christie
Navarretia nigelliformis ssp. radians shining navarretia Polemoniaceae annual herb (Mar)Apr-Jul None None G4T2T3 S2S3 1B.2 BLM_S Agriculture, Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint. Cismontane woodland, Valley and foothill grassland, Vernal pools Clay (sometimes) 65 1000 215 3280 Yes 1994-01-01
No Photo Available
Senecio aphanactis chaparral ragwort Asteraceae annual herb Jan-Apr(May) None None G3 S2 1B.2 SB_CalBG/RSABG; SB_CRES Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing Chaparral, Cismontane woodland, Coastal scrub Alkaline (sometimes) 15 800 50 2625 1994-01-01 Photo of Senecio aphanactis
Neal Kramer
Stylocline masonii Mason's neststraw Asteraceae annual herb Mar-May None None G1 S1 1B.1 BLM_S; USFS_S Dam/Inundation, Development Chenopod scrub, Pinyon and juniper woodland Sandy 100 1200 330 3935 Yes 1994-01-01
No Photo Available
Caulanthus lemmonii Lemmon's jewelflower Brassicaceae annual herb Feb-May None None G3 S3 1B.2 BLM_S; SB_SBBG; USFS_S Dam/Inundation, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Non-native plant impacts, ORV activity, Road/trail construction/maint. Pinyon and juniper woodland, Valley and foothill grassland 80 1580 260 5185 Yes 2001-01-01
No Photo Available
Githopsis tenella delicate bluecup Campanulaceae annual herb Apr-Jun None None G2 S2 1B.3 BLM_S Chaparral, Cismontane woodland Mesic, Serpentine 325 1900 1065 6235 Yes 2001-01-01
No Photo Available
Meconella oregana Oregon meconella Papaveraceae annual herb Mar-Apr None None G2 S2 1B.1 SB_CalBG/RSABG Coastal prairie, Coastal scrub 250 620 820 2035 1974-01-01 Photo of Meconella oregana
© 2021 Scot Loring
Microseris paludosa marsh microseris Asteraceae perennial herb Apr-Jun(Jul) None None G2 S2 1B.2 BLM_S; SB_SBBG; SB_UCSC Development, Grazing, Non-native plant impacts Cismontane woodland, Closed-cone coniferous forest, Coastal scrub, Valley and foothill grassland 5 355 15 1165 Yes 2001-01-01
No Photo Available
Navarretia prostrata prostrate vernal pool navarretia Polemoniaceae annual herb Apr-Jul None None G2 S2 1B.2 BLM_S Altered flood/tidal/hydrologic regime, Dam/Inundation, Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing Coastal scrub, Meadows and seeps, Valley and foothill grassland (alkaline), Vernal pools Mesic 3 1210 10 3970 Yes 2001-01-01
No Photo Available
Tortula californica California screw moss Pottiaceae moss None None G2G3 S2? 1B.2 BLM_S Chenopod scrub, Valley and foothill grassland Sandy 10 1460 35 4790 Yes 2001-01-01
No Photo Available
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 Photo of Arctostaphylos gabilanensis
© 2005 Dean Wm. Taylor
Calycadenia micrantha small-flowered calycadenia Asteraceae annual herb Jun-Sep None None G2 S2 1B.2 BLM_S; USFS_S Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Non-native plant impacts, Other, Road/trail construction/maint. Chaparral, Meadows and seeps (volcanic), Valley and foothill grassland Roadsides, Rocky, Scree, Serpentine (sometimes), Talus 5 1500 15 4920 Yes 2005-01-01 Photo of Calycadenia micrantha
©2021 Aaron Arthur
Dacryophyllum falcifolium tear drop moss Hypnaceae moss None None G2 S2 1B.3 USFS_S North Coast coniferous forest Carbonate 50 275 165 900 Yes 2006-09-25
No Photo Available
Orthotrichum kellmanii Kellman's bristle moss Orthotrichaceae moss Jan-Feb None None G1 S1 1B.2 USFS_S Chaparral, Cismontane woodland Carbonate, Sandstone 343 685 1125 2245 Yes 2007-08-16
No Photo Available
Juncus luciensis Santa Lucia dwarf rush Juncaceae annual herb Apr-Jul None None G3 S3 1B.2 BLM_S; USFS_S Agriculture, Foot traffic/trampling Chaparral, Great Basin scrub, Lower montane coniferous forest, Meadows and seeps, Vernal pools 300 2040 985 6695 Yes 2009-04-30 Photo of Juncus luciensis
© 2009 Keir Morse
Castilleja ambigua var. insalutata pink Johnny-nip Orobanchaceae annual herb (hemiparasitic) May-Aug None None G5T2 S2 1B.1 BLM_S Coastal prairie, Coastal scrub 0 100 0 330 Yes 2010-03-09
No Photo Available
Monolopia gracilens woodland woollythreads Asteraceae annual herb (Feb)Mar-Jul None None G3 S3 1B.2 SB_CalBG/RSABG Biocides, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Insufficient population/stand size, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing Broadleafed upland forest (openings), Chaparral (openings), Cismontane woodland, North Coast coniferous forest (openings), Valley and foothill grassland Serpentine 100 1200 330 3935 Yes 2010-04-06 Photo of Monolopia gracilens
© 2016 Richard Spellenberg
Nemacladus secundiflorus var. robbinsii Robbins' nemacladus Campanulaceae annual herb Apr-Jun None None G3T2 S2 1B.2 BLM_S; USFS_S Mining, Road/trail construction/maint. Chaparral, Valley and foothill grassland Openings 350 1700 1150 5580 Yes 2010-06-25
No Photo Available
Erysimum menziesii Menzies' wallflower Brassicaceae perennial herb Mar-Sep FE CE G1 S1 1B.1 SB_CalBG/RSABG; SB_UCBG Development, Erosion/runoff, Foot traffic/trampling, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Coastal dunes 0 35 0 115 Yes 1974-01-01 Photo of Erysimum menziesii
©2007 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 Photo of Agrostis lacuna-vernalis
© 2019 Aaron Schusteff
Erythranthe hardhamiae Santa Lucia monkeyflower Phrymaceae annual herb Mar-May None None G1 S1 1B.1 Development Chaparral (openings) Sandstone, Sandy, Serpentine (sometimes) 300 730 985 2395 Yes 2013-07-02 Photo of Erythranthe hardhamiae
Dylan Neubauer, 2014
Monardella sinuata ssp. nigrescens northern curly-leaved monardella Lamiaceae annual herb (Apr)May-Jul(Aug-Sep) None None G3T2 S2 1B.2 BLM_S; SB_SBBG Development, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Road/trail construction/maint. Chaparral (SCR Co.), Coastal dunes, Coastal scrub, Lower montane coniferous forest (SCR Co., ponderosa pine sandhills) Sandy 0 300 0 985 Yes 2013-12-31 Photo of Monardella sinuata ssp. nigrescens
© 2014 John Doyen
Lagophylla diabolensis Diablo Range hare-leaf Asteraceae annual herb Apr-Sep None None G2 S2 1B.2 BLM_S; SB_SBBG Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint. Cismontane woodland, Valley and foothill grassland Clay 365 885 1200 2905 Yes 2014-01-17 Photo of Lagophylla diabolensis
© 2015 Ryan O'Dell
Sulcaria spiralifera twisted horsehair lichen Parmeliaceae fruticose lichen (epiphytic) None None G3G4 S2 1B.2 BLM_S Development, Improper burning regime, Non-native plant impacts, ORV activity Coastal dunes (SLO Co.), North Coast coniferous forest (immediate coast) 0 90 0 295 2014-03-01 Photo of Sulcaria spiralifera
© 2021 Scot Loring
Grimmia torenii Toren's grimmia Grimmiaceae moss None None G2 S2 1B.3 BLM_S Chaparral, Cismontane woodland, Lower montane coniferous forest Carbonate, Openings, Rocky, Volcanic 325 1160 1065 3805 Yes 2014-05-14 Photo of Grimmia torenii
©2021 Scot Loring
Chorizanthe minutiflora Fort Ord spineflower Polygonaceae annual herb Apr-Jul None None G1 S1 1B.2 BLM_S; SB_SBBG Chaparral (maritime), Coastal scrub Openings, Sandy 55 150 180 490 Yes 2017-01-17 Photo of Chorizanthe minutiflora
© 2019 Aaron Schusteff
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 Photo of Allium howellii var. sanbenitense
© 2020 Ryan O'Dell
Scytinium siskiyouense Siskiyou jellyskin lichen Collemataceae foliose lichen None None G2G3 S1S2 1B.1 Improper burning regime Lower montane coniferous forest, North Coast coniferous forest 635 1460 2085 4790 2022-10-13
No Photo Available
Erigeron conditii Condit's fleabane daisy Asteraceae perennial herb May-Jul None None G1 S1 1B.1 Riparian forest Openings 60 215 195 705 2022-11-17
No Photo Available
Eryngium montereyense Fort Ord button-celery Apiaceae perennial herb Mar-May None None G1 S1 1B.1 BLM_S Vernal pools Sandy, Vernally Mesic 120 180 395 590 2023-02-08
No Photo Available
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 Yes 2023-03-28 Photo of Aphyllon robbinsii
© 2017 Dylan Neubauer
Malacothamnus discombobulatus discombobulating bushmallow Malvaceae perennial deciduous shrub (Jun)Jul-Aug(Sep-Oct) None None GNR S2 1B.2 Altered flood/tidal/hydrologic regime, Dam/Inundation, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Military operations, Non-native plant impacts, Other, Road/trail construction/maint. Chaparral, Cismontane woodland, Coastal scrub, Riparian woodland Burned areas 150 710 490 2330 Yes 2024-06-17 Photo of Malacothamnus discombobulatus
© 2023 Keir Morse

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Suggested Citation:
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 11 May 2025].
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