CNPS

CNPS Rare Plant Inventory


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140 matches found. Click on scientific name for details

Search Criteria: , County or Island is one of [MRN]

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
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 Photo of Amsinckia lunaris
© 2011 Neal Kramer
Calochortus tiburonensis Tiburon mariposa-lily Liliaceae perennial bulbiferous herb Mar-Jun FT CT G1 S1 1B.1 SB_UCBG Foot traffic/trampling, Non-native plant impacts Valley and foothill grassland (serpentinite) 50 150 165 490 Yes 1974-01-01
No Photo Available
Calochortus umbellatus Oakland star-tulip Liliaceae perennial bulbiferous herb Mar-May None None G3? S3? 4.2 SB_UCBG Broadleafed upland forest, Chaparral, Cismontane woodland, Lower montane coniferous forest, Valley and foothill grassland Serpentine (often) 100 700 330 2295 Yes 1980-01-01
No Photo Available
Calystegia collina ssp. oxyphylla Mt. Saint Helena morning-glory Convolvulaceae perennial rhizomatous herb Apr-Jun None None G4T3 S3 4.2 Erosion/runoff, Foot traffic/trampling, Road/trail construction/maint., Vandalism/dumping/litter Chaparral, Lower montane coniferous forest, Valley and foothill grassland Serpentine 279 1010 915 3315 Yes 1984-01-01
No Photo Available
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 Photo of Abronia umbellata var. breviflora
©2021 Scot Loring
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
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 Photo of Alopecurus aequalis var. sonomensis
© 2013 Vernon Smith
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 Photo of Arctostaphylos montana ssp. montana
© 2018 John Doyen
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
Collomia diversifolia serpentine collomia Polemoniaceae annual herb May-Jun None None G4 S4 4.3 SB_UCSC Chaparral, Cismontane woodland Gravelly (sometimes), Rocky (sometimes), Serpentine (sometimes) 200 600 655 1970 Yes 1974-01-01 Photo of Collomia diversifolia
©2019 Zoya Akulova
Hemizonia congesta ssp. congesta congested-headed hayfield tarplant Asteraceae annual herb Apr-Nov None None G5T2 S2 1B.2 SB_UCBG Agriculture, Development, Disking, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Road/trail construction/maint. Valley and foothill grassland Roadsides (sometimes) 20 560 65 1835 Yes 1988-01-01 Photo of Hemizonia congesta ssp. congesta
© 2015 Vernon Smith
Carex praticola northern meadow sedge Cyperaceae perennial herb May-Jul None None G5 S2 2B.2 Grazing, Logging Meadows and seeps (mesic) 0 3200 0 10500 1984-01-01 Photo of Carex praticola
©2013 Scot Loring
Chloropyron maritimum ssp. palustre Point Reyes salty bird's-beak Orobanchaceae annual herb (hemiparasitic) Jun-Oct None None G4?T2 S2 1B.2 BLM_S; SB_CalBG/RSABG Altered flood/tidal/hydrologic regime, Degraded water quality, Development, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, Insufficient population/stand size, Non-native plant impacts, ORV activity, Other, Pollution, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Vandalism/dumping/litter Marshes and swamps (coastal salt) 0 10 0 35 1974-01-01 Photo of Chloropyron maritimum ssp. palustre
©2017 John Doyen
Chloropyron molle ssp. molle soft salty bird's-beak Orobanchaceae annual herb (hemiparasitic) Jun-Nov FE CR G2T1 S1 1B.2 SB_CalBG/RSABG Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Channelization, Development, Disking, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Military operations, Non-native plant impacts, ORV activity, Other, Pollution, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Vandalism/dumping/litter Marshes and swamps (coastal salt) 0 3 0 10 Yes 1974-01-01 Photo of Chloropyron molle ssp. molle
© 2014 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 Photo of Arabis blepharophylla
© 2011 Neal Kramer
Ceanothus masonii Mason's ceanothus Rhamnaceae perennial evergreen shrub Mar-Apr None CR G1 S1 1B.2 SB_CalBG/RSABG; SB_USDA Grazing, Improper burning regime, Other, Road/trail construction/maint. Chaparral (openings, rocky, serpentinite) 230 500 755 1640 Yes 1974-01-01
No Photo Available
Helianthella castanea Diablo helianthella Asteraceae perennial herb Mar-Jun None None G2 S2 1B.2 BLM_S; SB_CalBG/RSABG Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Insufficient population/stand size, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing Broadleafed upland forest, Chaparral, Cismontane woodland, Coastal scrub, Riparian woodland, Valley and foothill grassland Rocky (usually) 60 1300 195 4265 Yes 1974-01-01 Photo of Helianthella castanea
© 2013 Christopher Bronny
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
Eastwoodiella californica swamp harebell Campanulaceae perennial rhizomatous herb Jun-Oct None None G3 S3 1B.2 BLM_S; SB_CalBG/RSABG Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Degraded water quality, Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Vandalism/dumping/litter, Wood cutting or brush clearing Bogs and fens, Closed-cone coniferous forest, Coastal prairie, Marshes and swamps (freshwater), Meadows and seeps, North Coast coniferous forest Mesic 1 405 5 1330 Yes 1974-01-01
No Photo Available
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
Blennosperma nanum var. robustum Point Reyes blennosperma Asteraceae annual herb Feb-Apr None CR G4T2 S2 1B.2 SB_CalBG/RSABG Erosion/runoff, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint. Coastal prairie, Coastal scrub 10 145 35 475 Yes 1974-01-01
No Photo Available
Calamagrostis crassiglumis Thurber's reed grass Poaceae perennial rhizomatous herb May-Aug None None G5Q S2 2B.1 Foot traffic/trampling, Grazing, Non-native plant impacts, Road/trail construction/maint. Coastal scrub (mesic), Marshes and swamps (freshwater) 10 60 35 195 1980-01-01
No Photo Available
Calamagrostis ophitidis serpentine reed grass Poaceae perennial herb Apr-Jul None None G3 S3 4.3 Chaparral (openings, often north-facing slopes), Lower montane coniferous forest, Meadows and seeps, Valley and foothill grassland Rocky, Serpentine 90 1065 295 3495 Yes 1974-01-01
No Photo Available
Cistanthe maritima seaside cistanthe Montiaceae annual herb (Feb)Mar-Jun(Aug) None None G3G4 S3 4.2 SB_CalBG/RSABG; SB_SBBG Coastal bluff scrub, Coastal scrub, Valley and foothill grassland Sandy 5 300 15 985 1980-01-01
No Photo Available
Hesperolinon congestum Marin western flax Linaceae annual herb Apr-Jul FT CT G1 S1 1B.1 SB_CalBG/RSABG; SB_UCBG Biocides, Dam/Inundation, Development, Disking, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Chaparral, Valley and foothill grassland Serpentine 5 370 15 1215 Yes 1974-01-01 Photo of Hesperolinon congestum
© 2009 Neal Kramer
Castilleja affinis var. neglecta Tiburon paintbrush Orobanchaceae perennial herb (hemiparasitic) Apr-Jun FE CT G4G5T1T2 S1S2 1B.2 SB_CalBG/RSABG; SB_UCBG Development, Feral pigs, Foot traffic/trampling, Grazing, Landfill, Mining, Non-native plant impacts, ORV activity, Other Valley and foothill grassland (serpentinite) 60 400 195 1310 Yes 1974-01-01
No Photo Available
Ceanothus gloriosus var. gloriosus Point Reyes ceanothus Rhamnaceae perennial evergreen shrub Mar-May None None G4T4 S4 4.3 SB_CalBG/RSABG Closed-cone coniferous forest, Coastal bluff scrub, Coastal dunes, Coastal scrub Sandy 5 520 15 1705 Yes 1974-01-01
No Photo Available
Ceanothus gloriosus var. porrectus Mt. Vision ceanothus Rhamnaceae perennial evergreen shrub Feb-May None None G4T2 S2 1B.3 SB_CalBG/RSABG Erosion/runoff, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, Other, Road/trail construction/maint., Vandalism/dumping/litter Closed-cone coniferous forest, Coastal prairie, Coastal scrub, Valley and foothill grassland 25 305 80 1000 Yes 1974-01-01
No Photo Available
Chorizanthe valida Sonoma spineflower Polygonaceae annual herb Jun-Aug FE CE G1 S1 1B.1 SB_CalBG/RSABG Grazing, Non-native plant impacts, Other, Road/trail construction/maint. Coastal prairie (sandy) 10 305 35 1000 Yes 1974-01-01
No Photo Available
Cirsium andrewsii Franciscan thistle Asteraceae perennial herb Mar-Jul None None G3 S3 1B.2 SB_CalBG/RSABG Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Other Broadleafed upland forest, Coastal bluff scrub, Coastal prairie, Coastal scrub Mesic, Serpentine (sometimes) 0 150 0 490 Yes 1974-01-01
No Photo Available
Cirsium hydrophilum var. vaseyi Mt. Tamalpais thistle Asteraceae perennial herb May-Aug None None G2T1 S1 1B.2 SB_CalBG/RSABG Development, Foot traffic/trampling, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint. Broadleafed upland forest, Chaparral, Meadows and seeps Seeps, Serpentine 240 620 785 2035 Yes 1974-01-01
No Photo Available
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
Cypripedium californicum California lady's-slipper Orchidaceae perennial rhizomatous herb Apr-Aug(Sep) None None G3 S4 4.2 IUCN_EN; SB_CalBG/RSABG Bogs and fens, Lower montane coniferous forest Seeps, Serpentine (usually), Streambanks 30 2750 100 9025 1980-01-01 Photo of Cypripedium californicum
© 2012 Barry Rice
Delphinium bakeri Baker's larkspur Ranunculaceae perennial herb Mar-May FE CE G1 S1 1B.1 SB_UCBG Agriculture, Biocides, Grazing, Non-native plant impacts, Other, Over-collecting/poaching, Road/trail construction/maint., Wood cutting or brush clearing Broadleafed upland forest, Coastal scrub, Valley and foothill grassland Mesic (often), Shale 80 305 260 1000 Yes 1974-01-01
No Photo Available
Delphinium luteum golden larkspur Ranunculaceae perennial herb Mar-May FE CR G1 S1 1B.1 SB_UCBG Agriculture, Development, Erosion/runoff, Grazing, Improper burning regime, Non-native plant impacts, Other, Road/trail construction/maint. Chaparral, Coastal prairie, Coastal scrub Rocky 0 100 0 330 Yes 1974-01-01
No Photo Available
Dichondra occidentalis western dichondra Convolvulaceae perennial rhizomatous herb (Jan)Mar-Jul None None G3G4 S3S4 4.2 Chaparral, Cismontane woodland, Coastal scrub, Valley and foothill grassland 50 500 165 1640 1974-01-01
No Photo Available
Dirca occidentalis western leatherwood Thymelaeaceae perennial deciduous shrub Jan-Mar(Apr) None None G2 S2 1B.2 SB_CalBG/RSABG Development, Erosion/runoff, Foot traffic/trampling, Grazing, Insufficient population/stand size, Logging, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Waterway bank protection/maintenance, Wood cutting or brush clearing Broadleafed upland forest, Chaparral, Cismontane woodland, Closed-cone coniferous forest, North Coast coniferous forest, Riparian forest, Riparian woodland Mesic 25 425 80 1395 Yes 1974-01-01 Photo of Dirca occidentalis
© 2017 Steve Matson
Eleocharis parvula small spikerush Cyperaceae perennial herb (Apr)Jun-Aug(Sep) None None G5 S3 4.3 Marshes and swamps 1 3020 5 9910 1980-01-01 Photo of Eleocharis parvula
©2018 Ron Vanderhoff
Elymus californicus California bottle-brush grass Poaceae perennial herb May-Aug(Nov) None None G4 S4 4.3 Broadleafed upland forest, Cismontane woodland, North Coast coniferous forest, Riparian woodland 15 470 50 1540 Yes 1974-01-01
No Photo Available
Erigeron supplex supple daisy Asteraceae perennial herb May-Jul None None G2 S2 1B.2 BLM_S; SB_UCBG Development, Grazing, Logging, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Coastal bluff scrub, Coastal prairie 10 50 35 165 Yes 1974-01-01
No Photo Available
Sagittaria sanfordii Sanford's arrowhead Alismataceae perennial rhizomatous herb (emergent) May-Oct(Nov) None None G3 S3 1B.2 BLM_S Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Dam/Inundation, Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Vandalism/dumping/litter, Waterway bank protection/maintenance Marshes and swamps (shallow freshwater) 0 650 0 2135 Yes 1984-01-01 Photo of Sagittaria sanfordii
©2013 Debra L. Cook
Eriogonum luteolum var. caninum Tiburon buckwheat Polygonaceae annual herb May-Sep None None G5T2 S2 1B.2 SB_CalBG/RSABG Development, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Road/trail construction/maint. Chaparral, Cismontane woodland, Coastal prairie, Valley and foothill grassland Gravelly, Sandy, Serpentine 0 700 0 2295 Yes 1974-01-01
No Photo Available
Erysimum franciscanum San Francisco wallflower Brassicaceae perennial herb Mar-Jun None None G3 S3 4.2 SB_UCSC Chaparral, Coastal dunes, Coastal scrub, Valley and foothill grassland Granitic (often), Roadsides (sometimes), Serpentine (often) 0 550 0 1805 Yes 1974-01-01
No Photo Available
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
Grindelia hirsutula var. maritima San Francisco gumplant Asteraceae perennial herb Jun-Sep None None G5T1Q S1 3.2 SB_UCSC Development, Foot traffic/trampling, Non-native plant impacts, Other, Road/trail construction/maint. Coastal bluff scrub, Coastal scrub, Valley and foothill grassland Sandy (sometimes), Serpentine (sometimes) 15 400 50 1310 Yes 1974-01-01 Photo of Grindelia hirsutula var. maritima
Robert Potts © 2001 California Academy of Sciences
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
Horkelia tenuiloba thin-lobed horkelia Rosaceae perennial herb May-Jul(Aug) None None G2 S2 1B.2 BLM_S; SB_CalBG/RSABG Agriculture, Biocides, Development, Disking, Foot traffic/trampling, Grazing, Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint. Broadleafed upland forest, Chaparral, Valley and foothill grassland Mesic, Openings, Sandy 50 500 165 1640 Yes 1988-01-01 Photo of Horkelia tenuiloba
© 1994 Doreen L. Smith
Juncus acutus ssp. leopoldii southwestern spiny rush Juncaceae perennial rhizomatous herb (Mar)May-Jun None None G5T5 S4 4.2 SB_CalBG/RSABG; SB_CRES Coastal dunes (mesic), Coastal scrub, Marshes and swamps (coastal salt), Meadows and seeps (alkaline seeps) 3 900 10 2955 1988-01-01 Photo of Juncus acutus ssp. leopoldii
© 2019 Belinda Lo
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
Lilaeopsis masonii Mason's lilaeopsis Apiaceae perennial rhizomatous herb Apr-Nov None CR G2 S2 1B.1 Altered flood/tidal/hydrologic regime, Biocides, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Pollution, Recreational use (non-ORV), Surface water diversion, Vandalism/dumping/litter, Waterway bank protection/maintenance Marshes and swamps (brackish, freshwater), Riparian scrub 0 10 0 35 Yes 1974-01-01
No Photo Available
Lilium maritimum coast lily Liliaceae perennial bulbiferous herb May-Aug None None G2 S2 1B.1 BLM_S; SB_BerrySB; SB_UCBG Altered flood/tidal/hydrologic regime, Biocides, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Logging, Non-native plant impacts, Other, Over-collecting/poaching, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing Broadleafed upland forest, Closed-cone coniferous forest, Coastal prairie, Coastal scrub, Marshes and swamps (freshwater), North Coast coniferous forest Roadsides (sometimes) 5 475 15 1560 Yes 1974-01-01 Photo of Lilium maritimum
© 2020 Aaron Schusteff
Limnanthes douglasii ssp. sulphurea Point Reyes meadowfoam Limnanthaceae annual herb Mar-May None CE G4T1 S1 1B.2 SB_UCBG Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Road/trail construction/maint. Coastal prairie, Marshes and swamps (freshwater), Meadows and seeps (mesic), Vernal pools 0 140 0 460 Yes 1974-01-01 Photo of Limnanthes douglasii ssp. sulphurea
© 2016 Aaron Arthur
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
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
Sidalcea hickmanii ssp. viridis Marin checkerbloom Malvaceae perennial herb May-Jun None None G2TH SH 1B.1 Foot traffic/trampling, Improper burning regime Chaparral (serpentinite) 50 430 165 1410 Yes 1974-01-01
No Photo Available
Navarretia rosulata Marin County navarretia Polemoniaceae annual herb May-Jul None None G2 S2 1B.2 BLM_S; SB_CalBG/RSABG Foot traffic/trampling, Wood cutting or brush clearing Chaparral, Closed-cone coniferous forest Rocky, Serpentine 200 635 655 2085 Yes 1980-01-01
No Photo Available
Castilleja ambigua var. humboldtiensis Humboldt Bay owl's-clover Orobanchaceae annual herb (hemiparasitic) Apr-Aug None None G5T2 S2 1B.2 BLM_S; SB_UCBG Agriculture, Altered flood/tidal/hydrologic regime, Development, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Waterway bank protection/maintenance Marshes and swamps (coastal salt) 0 3 0 10 Yes 1974-01-01 Photo of Castilleja ambigua var. humboldtiensis
©2017 Steve Matson
Triphysaria floribunda San Francisco owl's-clover Orobanchaceae annual herb Apr-Jun None None G2? S2? 1B.2 Development, Erosion/runoff, Foot traffic/trampling, Grazing, Insufficient population/stand size, Mining, Non-native plant impacts, Other, Road/trail construction/maint. Coastal prairie, Coastal scrub, Valley and foothill grassland Serpentine (usually) 10 160 35 525 Yes 1974-01-01
No Photo Available
Pentachaeta bellidiflora white-rayed pentachaeta Asteraceae annual herb Mar-May FE CE G1 S1 1B.1 SB_UCBG Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Vandalism/dumping/litter Cismontane woodland, Valley and foothill grassland (often serpentinite) 35 620 115 2035 Yes 1974-01-01
No Photo Available
Lasthenia californica ssp. bakeri Baker's goldfields Asteraceae perennial herb Apr-Oct None None G3T1 S1 1B.2 Foot traffic/trampling, Non-native plant impacts Closed-cone coniferous forest (openings), Coastal scrub, Marshes and swamps, Meadows and seeps 60 520 195 1705 Yes 2001-01-01 Photo of Lasthenia californica ssp. bakeri
©2015 Asa Spade
Lasthenia californica ssp. macrantha perennial goldfields Asteraceae perennial herb Jan-Nov None None G3T2 S2 1B.2 BLM_S; SB_CalBG/RSABG Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint. Coastal bluff scrub, Coastal dunes, Coastal scrub 5 520 15 1705 Yes 2001-01-01 Photo of Lasthenia californica ssp. macrantha
© 2013 John Doyen
Leptosiphon latisectus broad-lobed leptosiphon Polemoniaceae annual herb Apr-Jun None None G4 S4 4.3 Broadleafed upland forest, Cismontane woodland 170 1500 560 4920 Yes 2001-01-01 Photo of Leptosiphon latisectus
© 2015 Steve Matson
Leptosiphon rosaceus rose leptosiphon Polemoniaceae annual herb Apr-Jul None None G1 S1 1B.1 SB_CalBG/RSABG Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Road/trail construction/maint. Coastal bluff scrub 0 100 0 330 Yes 2001-01-01 Photo of Leptosiphon rosaceus
© 2013 Aaron Schusteff
Perideridia gairdneri ssp. gairdneri Gairdner's yampah Apiaceae perennial herb Jun-Oct None None G5T3T4 S3S4 4.2 SB_SBBG; SB_UCSC Broadleafed upland forest, Chaparral, Coastal prairie, Valley and foothill grassland, Vernal pools Vernally Mesic 0 610 0 2000 Yes 1974-01-01 Photo of Perideridia gairdneri ssp. gairdneri
©2007 Neal Kramer
Lessingia hololeuca woolly-headed lessingia Asteraceae annual herb Jun-Oct None None G2G3 S2S3 3 Broadleafed upland forest, Coastal scrub, Lower montane coniferous forest, Valley and foothill grassland Clay, Serpentine 15 305 50 1000 Yes 1994-01-01 Photo of Lessingia hololeuca
© 2015 Aaron Schusteff
Lessingia micradenia var. micradenia Tamalpais lessingia Asteraceae annual herb (Jun)Jul-Oct None None G2T2 S2 1B.2 SB_CalBG/RSABG; SB_USDA Biocides, Erosion/runoff, Foot traffic/trampling, Road/trail construction/maint. Chaparral, Valley and foothill grassland Roadsides (often), Serpentine (usually) 100 500 330 1640 Yes 1994-01-01 Photo of Lessingia micradenia var. micradenia
© 2015 Vernon Smith
Quercus parvula var. tamalpaisensis Tamalpais oak Fagaceae perennial evergreen shrub Mar-Apr None None G4T2 S2 1B.3 Foot traffic/trampling, Improper burning regime, Other, Road/trail construction/maint., Wood cutting or brush clearing Lower montane coniferous forest 100 750 330 2460 Yes 2001-01-01
No Photo Available
Phacelia insularis var. continentis North Coast phacelia Hydrophyllaceae annual herb Mar-May None None G2T2 S2 1B.2 BLM_S; SB_UCBG Development, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint. Coastal bluff scrub, Coastal dunes Rocky (sometimes), Sandy 10 170 35 560 Yes 1980-01-01
No Photo Available
Piperia michaelii Michael's rein orchid Orchidaceae perennial herb Apr-Aug None None G3 S3 4.2 SB_SBBG Chaparral, Cismontane woodland, Closed-cone coniferous forest, Coastal bluff scrub, Coastal scrub, Lower montane coniferous forest 3 915 10 3000 Yes 1984-01-01
No Photo Available
Plagiobothrys glaber hairless popcornflower Boraginaceae annual herb Mar-May None None GX SX 1A Agriculture, Development Marshes and swamps (coastal salt), Meadows and seeps (alkaline) 15 180 50 590 Yes 1974-01-01
No Photo Available
Pleuropogon hooverianus North Coast semaphore grass Poaceae perennial rhizomatous herb Apr-Jun None CT G2 S2 1B.1 BLM_S; SB_BerrySB; SB_CalBG/RSABG Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Dam/Inundation, Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Insufficient population/stand size, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint. Broadleafed upland forest, Meadows and seeps, North Coast coniferous forest Mesic, Openings 10 671 35 2200 Yes 1974-01-01
No Photo Available
Pleuropogon refractus nodding semaphore grass Poaceae perennial rhizomatous herb (Feb-Mar)Apr-Aug None None G4 S4 4.2 IUCN_LC Lower montane coniferous forest, Meadows and seeps, North Coast coniferous forest, Riparian forest Mesic 0 1600 0 5250 1974-01-01 Photo of Pleuropogon refractus
©2004 Dean Wm. Taylor
Polygonum marinense Marin knotweed Polygonaceae annual herb (Apr)May-Aug(Oct) None None G2Q S2 3.1 Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Recreational use (non-ORV), Vandalism/dumping/litter Marshes and swamps (brackish, coastal salt) 0 10 0 35 Yes 1974-01-01
No Photo Available
Ranunculus lobbii Lobb's aquatic buttercup Ranunculaceae annual herb (aquatic) Feb-May None None G4 S3 4.2 IUCN_LC Cismontane woodland, North Coast coniferous forest, Valley and foothill grassland, Vernal pools Mesic 15 470 50 1540 1974-01-01 Photo of Ranunculus lobbii
© 2018 John Doyen
Rhynchospora californica California beaked-rush Cyperaceae perennial rhizomatous herb May-Jul None None G1 S1 1B.1 BLM_S; SB_UCSC Altered flood/tidal/hydrologic regime, Foot traffic/trampling, Grazing, Non-native plant impacts Bogs and fens, Lower montane coniferous forest, Marshes and swamps (freshwater), Meadows and seeps (seeps) 45 1010 150 3315 Yes 1974-01-01 Photo of Rhynchospora californica
© 2004 Steve Matson
Streptanthus batrachopus Tamalpais jewelflower Brassicaceae annual herb Apr-Jul None None G2 S2 1B.3 SB_UCSC Foot traffic/trampling, Other, Recreational use (non-ORV) Chaparral, Closed-cone coniferous forest Serpentine 305 650 1000 2135 Yes 1974-01-01 Photo of Streptanthus batrachopus
© 2012 Aaron Schusteff
Streptanthus glandulosus ssp. pulchellus Mt. Tamalpais bristly jewelflower Brassicaceae annual herb May-Jul(Aug) None None G4T2 S2 1B.2 SB_CalBG/RSABG Dam/Inundation, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing Chaparral, Valley and foothill grassland Serpentine 150 800 490 2625 Yes 1980-01-01
No Photo Available
Streptanthus glandulosus ssp. niger Tiburon jewelflower Brassicaceae annual herb May-Jun FE CE G4T1 S1 1B.1 SB_CalBG/RSABG; SB_UCBG Development, Erosion/runoff, Foot traffic/trampling, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint. Valley and foothill grassland (serpentinite) 30 150 100 490 Yes 1974-01-01
No Photo Available
Micropus amphibolus Mt. Diablo cottonweed Asteraceae annual herb Mar-May None None G3G4 S3S4 3.2 SB_UCSC Broadleafed upland forest, Chaparral, Cismontane woodland, Valley and foothill grassland Rocky 45 825 150 2705 Yes 1974-01-01 Photo of Micropus amphibolus
© 2008 Aaron Arthur
Trifolium amoenum two-fork clover Fabaceae annual herb Apr-Jun FE None G1 S1 1B.1 SB_CalBG/RSABG; SB_UCBG; SB_USDA Development, Erosion/runoff Coastal bluff scrub, Valley and foothill grassland (sometimes serpentinite) 5 415 15 1360 Yes 1974-01-01
No Photo Available
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
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
Kopsiopsis hookeri small groundcone Orobanchaceae perennial rhizomatous herb (parasitic) Apr-Aug None None G4? S1S2 2B.3 Foot traffic/trampling, Hybridization, Insufficient population/stand size, Logging, Road/trail construction/maint. Lower montane coniferous forest, North Coast coniferous forest, Upper montane coniferous forest 90 885 295 2905 1994-01-01 Photo of Kopsiopsis hookeri
©2016 Vernon Smith
Carex leptalea bristle-stalked sedge Cyperaceae perennial rhizomatous herb Mar-Jul None None G5 S1 2B.2 IUCN_LC Altered flood/tidal/hydrologic regime, Dam/Inundation, Foot traffic/trampling, Logging, Non-native plant impacts, Other, Road/trail construction/maint. Bogs and fens, Marshes and swamps, Meadows and seeps (mesic) 0 700 0 2295 1994-01-01 Photo of Carex leptalea
© 2003 Steve Matson
Chorizanthe cuspidata var. cuspidata San Francisco Bay spineflower Polygonaceae annual herb Apr-Jul(Aug) None None G2T1 S1 1B.2 SB_CalBG/RSABG Development, Foot traffic/trampling, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint. Coastal bluff scrub, Coastal dunes, Coastal prairie, Coastal scrub Sandy 3 215 10 705 Yes 1994-01-01
No Photo Available
Chorizanthe cuspidata var. villosa woolly-headed spineflower Polygonaceae annual herb May-Jul(Aug) None None G2T2 S2 1B.2 Agriculture, Development, Disking, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, Wood cutting or brush clearing Coastal dunes, Coastal prairie, Coastal scrub Sandy 3 60 10 195 Yes 1994-01-01
No Photo Available
Clarkia concinna ssp. raichei Raiche's red ribbons Onagraceae annual herb Apr-May None None G5?T1 S1 1B.1 SB_CalBG/RSABG; SB_UCBG Grazing, Road/trail construction/maint. Coastal bluff scrub 0 100 0 330 Yes 1994-01-01 Photo of Clarkia concinna ssp. raichei
© 2015 Aaron Schusteff
Collinsia corymbosa round-headed collinsia Plantaginaceae annual herb Apr-Jun None None G1 S1 1B.2 SB_CalBG/RSABG Development, Foot traffic/trampling, Non-native plant impacts, ORV activity Coastal dunes 0 20 0 65 Yes 1994-01-01 Photo of Collinsia corymbosa
©2007 Steve Matson
Erigeron biolettii streamside daisy Asteraceae perennial herb Jun-Oct None None G3? S3? 3 Broadleafed upland forest, Cismontane woodland, North Coast coniferous forest Mesic, Rocky 30 1100 100 3610 Yes 1994-01-01 Photo of Erigeron biolettii
©2015 Doug Wirtz
Fritillaria lanceolata var. tristulis Marin checker lily Liliaceae perennial bulbiferous herb Feb-May None None G5T2 S2 1B.1 SB_UCSC Development, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint. Coastal bluff scrub, Coastal prairie, Coastal scrub 15 150 50 490 Yes 1994-01-01 Photo of Fritillaria lanceolata var. tristulis
© 2020 Barry Rice
Hesperevax sparsiflora var. brevifolia short-leaved evax Asteraceae annual herb Mar-Jun None None G4T3 S3 1B.2 BLM_S; SB_CalBG/RSABG Development, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint. Coastal bluff scrub (sandy), Coastal dunes, Coastal prairie 0 215 0 705 1994-01-01 Photo of Hesperevax sparsiflora var. brevifolia
© 2006 Doreen L. Smith
Leptosiphon aureus bristly leptosiphon Polemoniaceae annual herb Apr-Jul None None G4? S4? 4.2 Chaparral, Cismontane woodland, Coastal prairie, Valley and foothill grassland 55 1500 180 4920 Yes 1994-01-01 Photo of Leptosiphon aureus
© 2007 Len Blumin
Leptosiphon grandiflorus large-flowered leptosiphon Polemoniaceae annual herb Apr-Aug None None G3G4 S3S4 4.2 Cismontane woodland, Closed-cone coniferous forest, Coastal bluff scrub, Coastal dunes, Coastal prairie, Coastal scrub, Valley and foothill grassland Sandy (usually) 5 1220 15 4005 Yes 1994-01-01 Photo of Leptosiphon grandiflorus
© 2003 Doreen L. Smith
Navarretia leucocephala ssp. bakeri Baker's navarretia Polemoniaceae annual herb Apr-Jul None None G4T2 S2 1B.1 BLM_S; 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 Cismontane woodland, Lower montane coniferous forest, Meadows and seeps, Valley and foothill grassland, Vernal pools Mesic 5 1740 15 5710 Yes 1994-01-01 Photo of Navarretia leucocephala ssp. bakeri
© 2018 Barry Rice
Sidalcea calycosa ssp. rhizomata Point Reyes checkerbloom Malvaceae perennial rhizomatous herb Apr-Sep None None G5T2 S2 1B.2 Altered flood/tidal/hydrologic regime, Development, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint. Marshes and swamps (freshwater, near coast) 3 75 10 245 Yes 1994-01-01
No Photo Available
Calandrinia breweri Brewer's calandrinia Montiaceae annual herb (Jan)Mar-Jun None None G4 S4 4.2 SB_SBBG; SB_UCSC Chaparral, Coastal scrub Burned areas, Disturbed areas, Loam (sometimes), Sandy (sometimes) 10 1220 35 4005 1994-01-01
No Photo Available
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 Photo of Allium peninsulare var. franciscanum
© 2019 Aaron Arthur
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 Photo of Amorpha californica var. napensis
© 2016 John Doyen
Astragalus nuttallii var. nuttallii ocean bluff milk-vetch Fabaceae perennial herb Jan-Nov None None G4T4 S4 4.3 SB_UCSC Coastal bluff scrub, Coastal dunes 3 120 10 395 Yes 2001-01-01 Photo of Astragalus nuttallii var. nuttallii
Robert Preston
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 Photo of Astragalus pycnostachyus var. pycnostachyus
Neal Kramer
Calystegia purpurata ssp. saxicola coastal bluff morning-glory Convolvulaceae perennial herb (Mar)Apr-Sep None None G4T2T3 S2S3 1B.2 BLM_S; SB_UCSC Development, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint. Coastal bluff scrub, Coastal dunes, Coastal scrub, North Coast coniferous forest 0 105 0 345 Yes 2001-01-01
No Photo Available
Carex buxbaumii Buxbaum's sedge Cyperaceae perennial rhizomatous herb Mar-Aug None None G5 S3 4.2 Bogs and fens, Marshes and swamps, Meadows and seeps (mesic) 3 3300 10 10825 2001-01-01 Photo of Carex buxbaumii
© 2008 Dean Wm. Taylor, Ph.D.
Carex lyngbyei Lyngbye's sedge Cyperaceae perennial rhizomatous herb Apr-Aug None None G5 S3 2B.2 IUCN_LC Development, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Other Marshes and swamps (brackish, freshwater) 0 10 0 35 2001-01-01 Photo of Carex lyngbyei
©2017 Steve Matson
Ceanothus gloriosus var. exaltatus glory brush Rhamnaceae perennial evergreen shrub Mar-Jun(Aug) None None G4T4 S4 4.3 SB_UCSC Chaparral 30 610 100 2000 Yes 2001-01-01 Photo of Ceanothus gloriosus var. exaltatus
©2018 John Doyen
Ceanothus pinetorum Kern ceanothus Rhamnaceae perennial evergreen shrub May-Jul None None G3 S3 4.3 Lower montane coniferous forest, Subalpine coniferous forest, Upper montane coniferous forest Granitic, Rocky 1040 2745 3410 9005 Yes 1974-01-01 Photo of Ceanothus pinetorum
©2017 Aaron Schusteff
Gilia capitata ssp. chamissonis blue coast gilia Polemoniaceae annual herb Apr-Jul None None G5T2 S2 1B.1 SB_UCBG Development, Erosion/runoff, Foot traffic/trampling, Grazing, Non-native plant impacts, Road/trail construction/maint. Coastal dunes, Coastal scrub 2 200 5 655 Yes 2001-01-01 Photo of Gilia capitata ssp. chamissonis
© 2017 John Doyen
Gilia capitata ssp. tomentosa woolly-headed gilia Polemoniaceae annual herb May-Jul None None G5T2 S2 1B.1 SB_CalBG/RSABG Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Non-native plant impacts, Other, Road/trail construction/maint. Coastal bluff scrub, Valley and foothill grassland Rocky, Serpentine 10 220 35 720 Yes 2001-01-01 Photo of Gilia capitata ssp. tomentosa
© 2008 Vernon Smith
Gilia millefoliata dark-eyed gilia Polemoniaceae annual herb Apr-Jul None None G2 S2 1B.2 BLM_S; SB_CalBG/RSABG Development, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV) Coastal dunes 2 30 5 100 2001-01-01 Photo of Gilia millefoliata
© 2017 John Doyen
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 cotulifolia cotula navarretia Polemoniaceae annual herb May-Jun None None G4 S4 4.2 Chaparral, Cismontane woodland, Valley and foothill grassland Adobe 4 1830 15 6005 Yes 2001-01-01 Photo of Navarretia cotulifolia
© 2020 Zoya Akulova
Piperia elegans ssp. decurtata Point Reyes rein orchid Orchidaceae perennial herb Jul-Oct None None G4T1 S1 1B.1 SB_CalBG/RSABG Foot traffic/trampling, Other, Road/trail construction/maint. Coastal bluff scrub, Coastal prairie 15 185 50 605 Yes 2001-01-01
No Photo Available
Sidalcea malviflora ssp. purpurea purple-stemmed checkerbloom Malvaceae perennial rhizomatous herb May-Jun None None G4G5T1 S1 1B.2 BLM_S Development, Foot traffic/trampling, Grazing, Non-native plant impacts, Recreational use (non-ORV), Road/trail construction/maint. Broadleafed upland forest, Coastal prairie 15 85 50 280 Yes 2001-01-01
No Photo Available
Stellaria littoralis beach starwort Caryophyllaceae perennial rhizomatous herb Mar-Jul None None G3 S3 4.2 Bogs and fens, Coastal bluff scrub, Coastal dunes, Coastal scrub, Marshes and swamps 5 40 15 130 Yes 2001-01-01
No Photo Available
Viburnum ellipticum oval-leaved viburnum Viburnaceae perennial deciduous shrub May-Jun None None G4G5 S3 2B.3 Improper burning regime, Non-native plant impacts, Other, Road/trail construction/maint. Chaparral, Cismontane woodland, Lower montane coniferous forest 215 1400 705 4595 1974-01-01 Photo of Viburnum ellipticum
© 2006 Tom Engstrom
Toxicoscordion fontanum marsh zigadenus Melanthiaceae perennial bulbiferous herb Apr-Jul None None G3 S3 4.2 SB_UCSC Chaparral, Cismontane woodland, Lower montane coniferous forest, Marshes and swamps, Meadows and seeps Serpentine (often), Vernally Mesic 15 1000 50 3280 Yes 2001-01-01
No Photo Available
Entosthodon kochii Koch's cord moss Funariaceae moss None None G1 S1 1B.3 BLM_S Feral pigs, Grazing, Military operations, Non-native plant impacts, Recreational use (non-ORV) Cismontane woodland (soil) 180 1000 590 3280 Yes 2001-01-01
No Photo Available
Fissidens pauperculus minute pocket moss Fissidentaceae moss None None G3? S2 1B.2 USFS_S Erosion/runoff, Improper burning regime, Logging, Road/trail construction/maint. North Coast coniferous forest (damp coastal soil) 10 1024 35 3360 2001-01-01 Photo of Fissidens pauperculus
©2021 Scot Loring
Triquetrella californica coastal triquetrella Pottiaceae moss None None G2 S2 1B.2 USFS_S Coastal bluff scrub, Coastal scrub 10 100 35 330 2001-01-01
No Photo Available
Mielichhoferia elongata elongate copper moss Mielichhoferiaceae moss None None G5 S3S4 4.3 USFS_S Broadleafed upland forest, Chaparral, Cismontane woodland, Coastal scrub, Lower montane coniferous forest, Meadows and seeps, Subalpine coniferous forest Acidic (usually), Carbonate (sometimes), Metamorphic, Roadsides (often), Vernally Mesic (usually) 0 1960 0 6430 2001-01-01 Photo of Mielichhoferia elongata
© 2012 John Game
Hosackia gracilis harlequin lotus Fabaceae perennial rhizomatous herb Mar-Jul None None G3G4 S3 4.2 SB_CalBG/RSABG; SB_UCSC Broadleafed upland forest, Cismontane woodland, Closed-cone coniferous forest, Coastal bluff scrub, Coastal prairie, Coastal scrub, Marshes and swamps, Meadows and seeps, North Coast coniferous forest, Valley and foothill grassland Roadsides 0 700 0 2295 2004-01-01 Photo of Hosackia gracilis
© 2015 John Doyen
Cicuta maculata var. bolanderi Bolander's water-hemlock Apiaceae perennial herb Jul-Sep None None G5T4T5 S2? 2B.1 SB_CalBG/RSABG Erosion/runoff, Recreational use (non-ORV) Marshes and swamps (brackish, coastal, freshwater) 0 200 0 655 1974-01-01 Photo of Cicuta maculata var. bolanderi
© 2007 Doreen L Smith
Castilleja leschkeana Point Reyes paintbrush Orobanchaceae perennial herb (hemiparasitic) Jun None None GX SX 1A Marshes and swamps (coastal) 0 10 0 35 Yes 2012-11-27
No Photo Available
Iris longipetala coast iris Iridaceae perennial rhizomatous herb Mar-May(Jun) None None G3 S3 4.2 SB_UCSC Coastal prairie, Lower montane coniferous forest, Meadows and seeps Mesic 0 600 0 1970 Yes 2006-10-12 Photo of Iris longipetala
© 2014 Aaron Schusteff
Polemonium carneum Oregon polemonium Polemoniaceae perennial herb Apr-Sep None None G3G4 S2 2B.2 Logging Coastal prairie, Coastal scrub, Lower montane coniferous forest 0 1830 0 6005 2008-11-03 Photo of Polemonium carneum
©2018 John Doyen
Castilleja ambigua var. ambigua johnny-nip Orobanchaceae annual herb (hemiparasitic) Mar-Aug None None G5T4 S3S4 4.2 SB_CalBG/RSABG Coastal bluff scrub, Coastal prairie, Coastal scrub, Marshes and swamps, Valley and foothill grassland, Vernal pools (margins) 0 435 0 1425 2009-02-04 Photo of Castilleja ambigua var. ambigua
©2011 Dylan Neubauer
Calochortus uniflorus pink star-tulip Liliaceae perennial bulbiferous herb Apr-Jun None None G4 S4 4.2 SB_SBBG Coastal prairie, Coastal scrub, Meadows and seeps, North Coast coniferous forest 10 1070 35 3510 2010-03-04 Photo of Calochortus uniflorus
© 2021 Scot Loring
Cardamine angulata seaside bittercress Brassicaceae perennial herb (Jan)Mar-Jul None None G4G5 S3 2B.2 Altered flood/tidal/hydrologic regime, Erosion/runoff, Foot traffic/trampling, Logging, Other, Recreational use (non-ORV), Road/trail construction/maint. Lower montane coniferous forest, North Coast coniferous forest Streambanks 15 915 50 3000 2012-04-10 Photo of Cardamine angulata
© 2021 Scot Loring
Erysimum concinnum bluff wallflower Brassicaceae annual/perennial herb Feb-Jul None None G3 S2 1B.2 BLM_S Development, Non-native plant impacts Coastal bluff scrub, Coastal dunes, Coastal prairie 0 185 0 605 2012-12-03 Photo of Erysimum concinnum
©2020 John Doyen
Heteranthera dubia water star-grass Pontederiaceae perennial herb (aquatic) Jul-Oct None None G5 S2 2B.2 IUCN_LC Erosion/runoff, Recreational use (non-ORV) Marshes and swamps (alkaline, still, slow-moving water) Alkaline 30 1495 100 4905 2013-10-10 Photo of Heteranthera dubia
©2010 Louis-M. Landry
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
Hypogymnia schizidiata island tube lichen Parmeliaceae foliose lichen None None G2G3 S2 1B.3 Improper burning regime Chaparral, Closed-cone coniferous forest 360 405 1180 1330 2014-03-01
No Photo Available
Thamnolia vermicularis whiteworm lichen Icmadophilaceae fruticose lichen (terricolous) None None G5 S1 2B.1 Agriculture, Development, Foot traffic/trampling, Road/trail construction/maint. Chaparral, Valley and foothill grassland Rocky, Sandstone 90 90 295 295 2014-03-01 Photo of Thamnolia vermicularis
© 2021 Scot Loring
Ceanothus decornutus Nicasio ceanothus Rhamnaceae perennial shrub Mar-May None None G1 S1 1B.2 SB_CalBG/RSABG Non-native plant impacts, Other Chaparral (maritime) Clay (sometimes), Rocky, Serpentine 235 290 770 950 Yes 2016-06-16 Photo of Ceanothus decornutus
© 2014 Vernon Smith
Silene scouleri ssp. scouleri Scouler's catchfly Caryophyllaceae perennial herb (Mar-May)Jun-Aug(Sep) None None G5T4T5 S2S3 2B.2 Grazing, Non-native plant impacts, Other, Road/trail construction/maint. Coastal bluff scrub, Coastal prairie, Valley and foothill grassland 0 600 0 1970 2017-12-13 Photo of Silene scouleri ssp. scouleri
©2015 Vernon Smith
Streptanthus anomalus Mount Burdell jewelflower Brassicaceae annual herb May-Jun None None G1 S1 1B.1 SB_CalBG/RSABG Foot traffic/trampling, Grazing Cismontane woodland (openings) Openings, Serpentine 50 150 165 490 Yes 2019-08-21 Photo of Streptanthus anomalus
© 2015 Aaron Schusteff
Dermatocarpon meiophyllizum silverskin lichen Verrucariaceae foliose lichen (aquatic) None None G3G5 S3 2B.3 Coastal prairie, Lower montane coniferous forest, North Coast coniferous forest, Subalpine coniferous forest, Upper montane coniferous forest Lake Margins, Rocky, Streambanks 295 3495 970 11465 2022-07-14
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

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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 9 May 2025].
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