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CNPS Rare Plant Inventory


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71 matches found. Click on scientific name for details

Search Criteria: , Common Name starts with N

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 nissenana Nissenan manzanita Ericaceae perennial evergreen shrub Feb-Mar None None G1 S1 1B.2 BLM_S; USFS_S Agriculture, Biocides, Development, Disease, Improper burning regime, Logging, ORV activity, Other, Road/trail construction/maint., Wood cutting or brush clearing Chaparral, Closed-cone coniferous forest Rocky 450 1100 1475 3610 Yes 1974-01-01 Photo of Arctostaphylos nissenana
David Graber
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
Clarkia borealis ssp. borealis northern clarkia Onagraceae annual herb Jun-Sep None None G3T4 S4 4.3 SB_UCSC; USFS_S Altered flood/tidal/hydrologic regime, Biocides, Erosion/runoff, Foot traffic/trampling, Improper burning regime, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing Chaparral, Cismontane woodland, Lower montane coniferous forest Roadsides (often) 400 1565 1310 5135 Yes 1980-01-01 Photo of Clarkia borealis ssp. borealis
©2018 Sierra Pacific Industries
Eremothera minor Nelson's evening-primrose Onagraceae annual herb Apr-Jul None None G4 S1S2 2B.3 Non-native plant impacts, Other Chenopod scrub, Great Basin scrub (sandy) 1200 1380 3935 4530 1980-01-01
No Photo Available
Asplenium septentrionale northern spleenwort Aspleniaceae perennial rhizomatous herb Jul-Aug None None G5 S3 2B.3 Logging Chaparral, Lower montane coniferous forest, Subalpine coniferous forest, Upper montane coniferous forest Granitic, Rocky 1615 3350 5300 10990 1974-01-01 Photo of Asplenium septentrionale
©2018 Sierra Pacific Industries
Oreocarya tumulosa New York Mountains oreocarya Boraginaceae perennial herb Apr-Jun None None G4 S4 4.3 SB_CalBG/RSABG Mojavean desert scrub, Pinyon and juniper woodland Carbonate (sometimes), Clay (sometimes), Granitic (sometimes), Gravelly (sometimes) 915 2130 3000 6990 1980-01-01
No Photo Available
Dendromecon harfordii var. harfordii north island bush-poppy Papaveraceae perennial evergreen shrub Mar-Nov None None G3T3Q S3 3.2 SB_SBBG Chaparral, Closed-cone coniferous forest Rocky 15 420 50 1380 Yes 1980-01-01
No Photo Available
Enceliopsis nudicaulis var. nudicaulis naked-stemmed daisy Asteraceae perennial herb Apr-May None None G5T5 S3 4.3 SB_CalBG/RSABG; SB_USDA Great Basin scrub, Mojavean desert scrub Carbonate (sometimes), Volcanic (sometimes) 950 2000 3115 6560 1974-01-01
No Photo Available
Enneapogon desvauxii nine-awned pappus grass Poaceae perennial herb Aug-Sep None None G5 S3 2B.2 SB_CalBG/RSABG Channelization, Development, Grazing, Logging, Mining, Non-native animal impacts, Non-native plant impacts, ORV activity, Road/trail construction/maint., Vandalism/dumping/litter Pinyon and juniper woodland (carbonate, rocky) 1275 1825 4185 5990 1974-01-01
No Photo Available
Eriodictyon angustifolium narrow-leaved yerba santa Namaceae perennial evergreen shrub May-Aug None None G5 S3 2B.3 Pinyon and juniper woodland 1500 1900 4920 6235 1974-01-01
No Photo Available
Harmonia doris-nilesiae Niles' harmonia Asteraceae annual herb May-Jul None None G2G3 S2S3 1B.1 BLM_S; SB_UCSC; USFS_S Logging, Mining, Non-native plant impacts, Other, Road/trail construction/maint. Chaparral, Cismontane woodland, Lower montane coniferous forest Openings, Rocky, Serpentine (usually) 650 1660 2135 5445 Yes 1988-01-01 Photo of Harmonia doris-nilesiae
©2013 Julie Kierstead Nelson
Rhinotropis heterorhyncha notch-beaked milkwort Polygalaceae perennial herb Apr-May None None G3 S2 2B.3 Mojavean desert scrub (alkaline) 900 1600 2955 5250 1994-01-01
No Photo Available
Potamogeton epihydrus Nuttall's ribbon-leaved pondweed Potamogetonaceae perennial rhizomatous herb (aquatic) (Jun)Jul-Sep None None G5 S2S3 2B.2 IUCN_LC Altered flood/tidal/hydrologic regime, Non-native plant impacts, ORV activity, Pollution, Recreational use (non-ORV) Marshes and swamps (shallow freshwater) 369 2172 1210 7125 1994-01-01 Photo of Potamogeton epihydrus
Louis-M. Landry, 2010
Stuckenia filiformis ssp. alpina northern slender pondweed Potamogetonaceae perennial rhizomatous herb (aquatic) May-Jul None None G5T5 S2S3 2B.2 Marshes and swamps (shallow freshwater) 300 2150 985 7055 1994-01-01 Photo of Stuckenia filiformis ssp. alpina
Dana York (2016)
Eriogonum breedlovei var. shevockii Needles buckwheat Polygonaceae perennial herb (Jun)Jul-Sep None None G3T3 S3 4.3 SB_CalBG/RSABG Pinyon and juniper woodland, Upper montane coniferous forest Granitic, Rocky 1615 2575 5300 8450 Yes 1980-01-01
No Photo Available
Constancea nevinii Nevin's woolly sunflower Asteraceae perennial deciduous shrub Apr-Aug None None G3 S3 1B.3 SB_CalBG/RSABG; SB_CRES Development Coastal bluff scrub, Coastal scrub 5 410 15 1345 Yes 1974-01-01
No Photo Available
Galium nuttallii ssp. insulare Nuttall's island bedstraw Rubiaceae perennial herb Mar-Jun None None G5?T4 S4 4.3 Chaparral, Cismontane woodland, Coastal scrub, Lower montane coniferous forest 3 440 10 1445 Yes 1974-01-01 Photo of Galium nuttallii ssp. insulare
© 2006 Steve Matson
Gilia nevinii Nevin's gilia Polemoniaceae annual herb Mar-Jun None None G4 S4 4.3 SB_CalBG/RSABG Coastal bluff scrub, Coastal scrub, Valley and foothill grassland 5 400 15 1310 1984-01-01 Photo of Gilia nevinii
© 2011 Neal Kramer
Lomatium repostum Napa lomatium Apiaceae perennial herb Mar-Jun None None G3 S3 4.2 SB_UCSC Broadleafed upland forest, Chaparral, Cismontane woodland Gravelly (sometimes), Openings (often), Rocky (sometimes), Sandstone (rarely), Serpentine, Volcanic (often) 90 1440 295 4725 Yes 1974-01-01
No Photo Available
Acmispon prostratus Nuttall's acmispon Fabaceae annual herb Mar-Jun(Jul) None None G1G2 S1 1B.1 IUCN_EN; SB_CalBG/RSABG; SB_CRES; SB_USDA Altered flood/tidal/hydrologic regime, Biocides, Development, Erosion/runoff, Foot traffic/trampling, Military operations, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing Coastal dunes, Coastal scrub (sandy) 0 10 0 35 1974-01-01 Photo of Acmispon prostratus
© 2014 Andrew Borcher
Lupinus nipomensis Nipomo Mesa lupine Fabaceae annual herb Dec-May FE CE G1 S1 1B.1 SB_SBBG Agriculture, Biocides, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, ORV activity, Road/trail construction/maint. Coastal dunes 10 50 35 165 Yes 1974-01-01 Photo of Lupinus nipomensis
© 2021 Justin Luong
Lycopus uniflorus northern bugleweed Lamiaceae perennial herb Jul-Sep None None G5 S4 4.3 Bogs and fens, Marshes and swamps 5 2000 15 6560 1980-01-01 Photo of Lycopus uniflorus
© 2021 Scot Loring
Harmonia nutans nodding harmonia Asteraceae annual herb Mar-May None None G3 S3 4.3 SB_UCBG Chaparral, Cismontane woodland Gravelly (sometimes), Rocky (sometimes), Volcanic 75 975 245 3200 Yes 1984-01-01 Photo of Harmonia nutans
© 2008 Neal Kramer
Berberis nevinii Nevin's barberry Berberidaceae perennial evergreen shrub (Feb)Mar-Jun FE CE G1 S1 1B.1 SB_CalBG/RSABG; SB_SBBG Agriculture, Altered flood/tidal/hydrologic regime, Channelization, Dam/Inundation, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing Chaparral, Cismontane woodland, Coastal scrub, Riparian scrub Gravelly (sometimes), Sandy (sometimes) 70 825 230 2705 Yes 1980-01-01
No Photo Available
Phacelia novenmillensis Nine Mile Canyon phacelia Hydrophyllaceae annual herb (Feb)May-Jun None None G3 S3 1B.2 BLM_S; USFS_S Development, Foot traffic/trampling, Grazing, Improper burning regime, Recreational use (non-ORV) Broadleafed upland forest, Cismontane woodland, Pinyon and juniper woodland, Upper montane coniferous forest Gravelly (sometimes), Sandy (sometimes) 1645 2640 5395 8660 Yes 1974-01-01
No Photo Available
Ophioglossum pusillum northern adder's-tongue Ophioglossaceae perennial rhizomatous herb Jul None None G4 S1 2B.2 USFS_S Grazing, Improper burning regime, Other Marshes and swamps (margins), Meadows and seeps 1000 2000 3280 6560 1974-01-01 Photo of Ophioglossum pusillum
© 2021 Scot Loring
Oryctes nevadensis Nevada oryctes Solanaceae annual herb Apr-Jun None None G3 S2 2B.1 Development, Foot traffic/trampling, Grazing, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint. Chenopod scrub, Mojavean desert scrub Sandy 1100 2535 3610 8315 1974-01-01
No Photo Available
Microseris borealis northern microseris Asteraceae perennial herb Jun-Sep None None G5 S1 2B.1 IUCN_LC Bogs and fens, Lower montane coniferous forest, Meadows and seeps Mesic 1000 2000 3280 6560 1994-01-01 Photo of Microseris borealis
© 2013 California Academy of Sciences
Perideridia leptocarpa narrow-seeded yampah Apiaceae perennial herb Jun-Aug None None G3Q S3 4.3 Broadleafed upland forest, Cismontane woodland, Lower montane coniferous forest Serpentine (usually) 425 1585 1395 5200 1974-01-01 Photo of Perideridia leptocarpa
©2015 Dana York
Robinia neomexicana New Mexico locust Fabaceae perennial deciduous shrub May-Jul None None G4 S1 2B.3 IUCN_LC Pinyon and juniper woodland (sandy) 1500 1770 4920 5805 1974-01-01
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
Phacelia insularis var. insularis northern Channel Islands phacelia Hydrophyllaceae annual herb Feb-Apr FE None G2T1 S1 1B.2 SB_SBBG Non-native plant impacts Coastal dunes, Valley and foothill grassland Sandy 0 215 0 705 Yes 1980-01-01
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
Poa napensis Napa blue grass Poaceae perennial herb May-Aug FE CE G1 S1 1B.1 SB_CalBG/RSABG Development, Foot traffic/trampling, Grazing, ORV activity, Other, Road/trail construction/maint., Surface water diversion Meadows and seeps, Valley and foothill grassland Alkaline 100 200 330 655 Yes 1974-01-01
No Photo Available
Populus angustifolia narrow-leaved cottonwood Salicaceae perennial deciduous tree Mar-Apr None None G5 S2 2B.2 Altered flood/tidal/hydrologic regime, Other Riparian forest 1200 1800 3935 5905 1980-01-01
No Photo Available
Cascadia nuttallii Nuttall's saxifrage Saxifragaceae perennial rhizomatous herb May None None G4? S1 2B.1 North Coast coniferous forest (mesic, rocky) 40 75 130 245 1988-01-01 Photo of Cascadia nuttallii
© 2021 Scot Loring
Allium nevadense Nevada onion Alliaceae perennial bulbiferous herb Apr-May None None G4 S3 2B.3 Development, Foot traffic/trampling, Non-native animal impacts, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV) Pinyon and juniper woodland (gravelly, sandy) 810 1700 2660 5580 1994-01-01 Photo of Allium nevadense
© 2006 James M. Andre
Botrychium neolunaria North American moonwort Ophioglossaceae perennial rhizomatous herb Jun-Sep None None G5 S2 2B.3 USFS_S Altered flood/tidal/hydrologic regime, Grazing, Other, Vandalism/dumping/litter Meadows and seeps Mesic, Rocky (sometimes) 1980 3415 6495 11205 1994-01-01
No Photo Available
Botrychium pinnatum northwestern moonwort Ophioglossaceae perennial rhizomatous herb Jul-Oct None None G5 S1 2B.2 USFS_S Development, Erosion/runoff, Foot traffic/trampling, Grazing, Logging, Other, Recreational use (non-ORV), Road/trail construction/maint. Lower montane coniferous forest, Meadows and seeps, Upper montane coniferous forest Mesic 1770 2040 5805 6695 1994-01-01 Photo of Botrychium pinnatum
©2020 Belinda Lo
Corallorhiza trifida northern coralroot Orchidaceae perennial rhizomatous herb (achlorophyllous) Jun-Jul None None G5 S1 2B.1 Improper burning regime, Logging, Recreational use (non-ORV) Lower montane coniferous forest, Meadows and seeps (edges) Mesic 1370 1745 4495 5725 1994-01-01 Photo of Corallorhiza trifida
© 2021 Scot Loring
Erigeron petrophilus var. sierrensis northern Sierra daisy Asteraceae perennial rhizomatous herb Jun-Oct None None G4T4 S4 4.3 Cismontane woodland, Lower montane coniferous forest, Upper montane coniferous forest Serpentine (sometimes) 300 2073 985 6800 Yes 1994-01-01
No Photo Available
Potentilla newberryi Newberry's cinquefoil Rosaceae perennial herb May-Aug None None G3G4 S2S3 2B.3 Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint. Marshes and swamps (drying margins), Vernal pools 1300 2200 4265 7220 1994-01-01 Photo of Potentilla newberryi
© 2006 Keir Morse
Quercus dumosa Nuttall's scrub oak Fagaceae perennial evergreen shrub Feb-Apr(May-Aug) None None G3 S3 1B.1 BLM_S; IUCN_EN; SB_CRES; USFS_S Agriculture, Altered flood/tidal/hydrologic regime, Development, Foot traffic/trampling, Improper burning regime, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing Chaparral, Closed-cone coniferous forest, Coastal scrub Clay, Loam, Sandy 15 400 50 1310 1994-01-01
No Photo Available
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
Brodiaea leptandra narrow-anthered brodiaea Themidaceae perennial bulbiferous herb May-Jul None None G3? S3? 1B.2 SB_CalBG/RSABG Agriculture, Development, Foot traffic/trampling, Improper burning regime, Non-native plant impacts, Over-collecting/poaching, Road/trail construction/maint., Surface water diversion, Wood cutting or brush clearing Broadleafed upland forest, Chaparral, Cismontane woodland, Lower montane coniferous forest, Valley and foothill grassland Volcanic 110 915 360 3000 Yes 2001-01-01 Photo of Brodiaea leptandra
© 2018 Zoya Akulova
Carex arcta northern clustered sedge Cyperaceae perennial herb Jun-Sep None None G5 S1 2B.2 IUCN_LC Altered flood/tidal/hydrologic regime, Foot traffic/trampling, Grazing, Logging, Other, Road/trail construction/maint. Bogs and fens, North Coast coniferous forest (mesic) 60 1400 195 4595 2001-01-01 Photo of Carex arcta
© 2006 Dean Wm. Taylor
Erigeron eatonii var. nevadincola Nevada daisy Asteraceae perennial herb May-Jul None None G5T4 S2S3 2B.3 Development, Grazing, ORV activity, Other, Road/trail construction/maint. Great Basin scrub, Lower montane coniferous forest, Pinyon and juniper woodland Rocky 1400 2900 4595 9515 2001-01-01
No Photo Available
Horsfordia newberryi Newberry's velvet-mallow Malvaceae perennial shrub Feb-Dec None None G5 S4 4.3 SB_CalBG/RSABG Sonoran desert scrub (rocky) 3 800 10 2625 2001-01-01
No Photo Available
Euphrosyne nevadensis Nevada wormwood Asteraceae annual herb May-Oct None None G4 S3 4.3 Chenopod scrub, Great Basin scrub, Pinyon and juniper woodland Alkaline, Sandy 1000 2055 3280 6740 1974-01-01
No Photo Available
Lupinus nevadensis Nevada lupine Fabaceae perennial herb Apr-Jun None None G4 S4 4.3 Great Basin scrub, Pinyon and juniper woodland 1000 3000 3280 9845 2001-01-01
No Photo Available
Phacelia gymnoclada naked-stemmed phacelia Hydrophyllaceae annual herb Apr-Jun(Aug) None None G4 S2 2B.3 Chenopod scrub, Great Basin scrub, Pinyon and juniper woodland Clay (sometimes), Gravelly (sometimes) 1220 2500 4005 8205 2001-01-01
No Photo Available
Physocarpus alternans Nevada ninebark Rosaceae perennial deciduous shrub Jun-Jul None None G4 S3 2B.3 Non-native plant impacts Pinyon and juniper woodland (carbonate, rocky) 1800 3100 5905 10170 2001-01-01
No Photo Available
Piperia leptopetala narrow-petaled rein orchid Orchidaceae perennial herb May-Jul None None G4 S4 4.3 Cismontane woodland, Lower montane coniferous forest, Upper montane coniferous forest 380 2225 1245 7300 Yes 2001-01-01 Photo of Piperia leptopetala
©2006 Brad Kelley
Psorothamnus fremontii var. attenuatus narrow-leaved psorothamnus Fabaceae perennial shrub Apr None None G5T4? S3 2B.3 Development, Mining, Road/trail construction/maint. Sonoran desert scrub (granitic, volcanic) 335 915 1100 3000 2001-01-01
No Photo Available
Discelium nudum naked flag moss Disceliaceae ephemeral moss None None G4G5 S1 2B.2 Coastal bluff scrub (clay banks, soil) 10 50 35 165 2001-01-01
No Photo Available
Ceanothus impressus var. nipomensis Nipomo Mesa ceanothus Rhamnaceae perennial shrub Feb-Apr None None G3T2 S2 1B.2 Agriculture, Development Chaparral Sandy 30 245 100 805 2006-01-10 Photo of Ceanothus impressus var. nipomensis
© 2022 Debra L Cook
Cypripedium parviflorum var. makasin northern yellow lady's-slipper Orchidaceae perennial herb May-Aug None None G5T5 SH 3.1 Bogs and fens, Meadows and seeps Mesic 0 1500 0 4920 2006-09-29
No Photo Available
Trichostema ruygtii Napa bluecurls Lamiaceae annual herb Jun-Oct None None G2 S2 1B.2 SB_CalBG/RSABG Agriculture, Development Chaparral, Cismontane woodland, Lower montane coniferous forest, Valley and foothill grassland, Vernal pools 30 680 100 2230 Yes 2007-01-03
No Photo Available
Sidalcea hickmanii ssp. napensis Napa checkerbloom Malvaceae perennial herb Apr-Jun None None G2T1 S1 1B.1 SB_CalBG/RSABG Agriculture Chaparral 415 610 1360 2000 Yes 2009-04-02 Photo of Sidalcea hickmanii ssp. napensis
© Jake Ruygt
Helianthus inexpectatus Newhall sunflower Asteraceae perennial rhizomatous herb Aug-Oct None None G1 S1 1B.1 SB_CalBG/RSABG Altered flood/tidal/hydrologic regime, Development, Non-native plant impacts, Over-collecting/poaching Marshes and swamps, Riparian woodland Seeps 305 305 1000 1000 Yes 2010-08-16 Photo of Helianthus inexpectatus
© 2012 Anuja Parikh and Nathan Gale
Astragalus nyensis Nye milk-vetch Fabaceae annual herb Apr-May None None G3? S1 1B.1 BLM_S; SB_CalBG/RSABG Development, Non-native plant impacts, ORV activity Mojavean desert scrub Alkaline (sometimes), Gravelly, Sandy 790 815 2590 2675 2011-12-27
No Photo Available
Carex nardina nard sedge Cyperaceae perennial herb Aug-Sep None None G5 S1 2B.2 Subalpine coniferous forest Carbonate, Rocky 2105 2175 6905 7135 2013-10-28 Photo of Carex nardina
J. Mastrogiuseppe
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
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
Petalonyx linearis narrow-leaf sandpaper-plant Loasaceae perennial shrub (Jan-Feb)Mar-May(Jun-Dec) None None G4 S3? 2B.3 Mojavean desert scrub, Sonoran desert scrub Rocky (sometimes), Sandy (sometimes) -25 1115 -80 3660 2016-09-16
No Photo Available
Silene nelsonii Nelson's stringflower Caryophyllaceae perennial herb Apr-Jun None None G3 S3 4.3 Cismontane woodland, Lower montane coniferous forest Openings, Roadsides, Rocky 290 1430 950 4690 Yes 2021-06-24 Photo of Silene nelsonii
©2019 Steve Matson
Cryptantha pterocarya var. stenoloba narrow-lobed cryptantha Boraginaceae annual herb Mar-Apr None None G5T2T3 S1 2B.1 ORV activity Desert dunes Granitic, Gravelly, Rocky, Sandy 155 365 510 1200 2022-07-18
No Photo Available
Arctostaphylos nipumu Nipomo Mesa manzanita Ericaceae perennial evergreen shrub Jan-Mar(Apr-Dec) None None G1 S1 1B.1 Agriculture, Development, Disking, Hybridization, Improper burning regime, Non-native plant impacts, Road/trail construction/maint., Wood cutting or brush clearing Chaparral (maritime, sandy) Sandy 18 155 60 510 Yes 2025-03-20
No Photo Available
Castilleja angustifolia var. flavescens northwestern paintbrush Orobanchaceae perennial herb (hemiparasitic) (Apr)May-Jul None None G5T4 S3 4.3 Great Basin scrub, Pinyon and juniper woodland Clay (sometimes), Gravelly (often), Rocky (usually), Sandy (sometimes), Volcanic (often) 1310 2590 4300 8500 2026-05-08 Photo of Castilleja angustifolia var. flavescens
© 2025 Wynn Anderson
Eremothera nevadensis Nevada evening-primrose Onagraceae annual herb Jun None None 2B.1 Great Basin scrub, Pinyon and juniper woodland Alkaline (sometimes), Clay (often), Gravelly (sometimes), Sandy (sometimes), Vernally Mesic (often) 2100 2150 6890 7055 2026-06-01 Photo of Eremothera nevadensis
© 2012 Gary A. Monroe

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Suggested Citation:
California Native Plant Society, Rare Plant Program. 2026. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 9 June 2026].
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