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CNPS Rare Plant Inventory


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99 matches found. Click on scientific name for details

Search Criteria: Common Name starts with L

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 grandiflora large-flowered fiddleneck Boraginaceae annual herb (Mar)Apr-May FE CE G1 S1 1B.1 SB_UCBG Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Non-native plant impacts, Other Cismontane woodland, Valley and foothill grassland 270 550 885 1805 Yes 1974-01-01 Photo of Amsinckia grandiflora
© 2015 Zoya Akulova
Saltugilia latimeri Latimer's woodland-gilia Polemoniaceae annual herb Mar-Jun None None G3 S3 1B.2 BLM_S; SB_CalBG/RSABG; SB_USDA; USFS_S Development, Foot traffic/trampling, Grazing, Mining, Non-native animal impacts, ORV activity, Recreational use (non-ORV), Vandalism/dumping/litter Chaparral, Mojavean desert scrub, Pinyon and juniper woodland Granitic (often), Rocky (sometimes), Sandy (sometimes), Washes (sometimes) 400 1900 1310 6235 Yes 2004-01-01
No Photo Available
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 purissima La Purisima manzanita Ericaceae perennial evergreen shrub Nov-May None None G2 S2 1B.1 SB_CalBG/RSABG; SB_USDA Development, Foot traffic/trampling, Grazing, Improper burning regime, Landfill, Military operations, Non-native plant impacts, Other, Road/trail construction/maint. Chaparral (sandy), Coastal scrub 60 390 195 1280 Yes 1988-01-01
No Photo Available
Calochortus longebarbatus var. longebarbatus long-haired star-tulip Liliaceae perennial bulbiferous herb Jun-Aug(Sep) None None G4T3 S3 1B.2 SB_BerrySB; USFS_S Erosion/runoff, Foot traffic/trampling, Grazing, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion Great Basin scrub, Lower montane coniferous forest (openings, drainages), Meadows and seeps, Vernal pools Clay, Mesic 1005 1900 3295 6235 1974-01-01 Photo of Calochortus longebarbatus var. longebarbatus
©2020 John Doyen
Calochortus simulans La Panza mariposa-lily Liliaceae perennial bulbiferous herb Apr-Jun None None G2 S2 1B.3 SB_CRES; SB_SBBG; USFS_S Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Insufficient population/stand size, Mining, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Chaparral, Cismontane woodland, Lower montane coniferous forest, Valley and foothill grassland Granitic (often), Sandy, Serpentine (sometimes) 325 1150 1065 3775 Yes 1980-01-01 Photo of Calochortus simulans
© 2011 Aaron E. Sims
Colubrina californica Las Animas colubrina Rhamnaceae perennial deciduous shrub Apr-Jun None None G4 S2S3 2B.3 SB_CalBG/RSABG Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Non-native plant impacts, ORV activity Mojavean desert scrub, Sonoran desert scrub 10 1000 35 3280 1980-01-01
No Photo Available
Carex petasata Liddon's sedge Cyperaceae perennial herb May-Jul None None G5 S3 2B.3 Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Logging, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Wood cutting or brush clearing Broadleafed upland forest, Lower montane coniferous forest, Meadows and seeps, Pinyon and juniper woodland 600 3320 1970 10895 1984-01-01 Photo of Carex petasata
©2019 Sierra Pacific Industries
Clarkia lewisii Lewis' clarkia Onagraceae annual herb (Feb)May-Jul None None G4 S4 4.3 SB_CalBG/RSABG; SB_SBBG Broadleafed upland forest, Chaparral, Cismontane woodland, Closed-cone coniferous forest, Coastal scrub 30 1195 100 3920 Yes 1980-01-01
No Photo Available
Boechera lincolnensis Lincoln rockcress Brassicaceae perennial herb Mar-May None None G4G5 S3 2B.3 BLM_S Chenopod scrub, Mojavean desert scrub Carbonate 1100 2705 3610 8875 1984-01-01
No Photo Available
Atriplex coronata var. vallicola Lost Hills crownscale Chenopodiaceae annual herb Apr-Sep None None G4T3 S3 1B.2 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
Erythranthe purpurea little purple monkeyflower Phrymaceae annual herb May-Jun None None G2 S2 1B.2 SB_CalBG/RSABG; USFS_S Altered flood/tidal/hydrologic regime, Development, Foot traffic/trampling, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Meadows and seeps, Pebble (Pavement) plain, Upper montane coniferous forest 1900 2300 6235 7545 1974-01-01
No Photo Available
Astragalus jaegerianus Lane Mountain milk-vetch Fabaceae perennial herb Apr-Jun FE None G2 S2 1B.1 SB_CalBG/RSABG Development, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Vandalism/dumping/litter Joshua tree "woodland", Mojavean desert scrub Granitic, Gravelly (sometimes), Sandy (sometimes) 900 1200 2955 3935 Yes 1974-01-01
No Photo Available
Astragalus johannis-howellii Long Valley milk-vetch Fabaceae perennial herb Jun-Aug None CR G2 S1 1B.2 BLM_S; SB_SBBG; USFS_S Dam/Inundation, Foot traffic/trampling, Grazing, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Great Basin scrub (sandy loam) 2040 2530 6695 8300 1974-01-01
No Photo Available
Astragalus lentiformis lens-pod milk-vetch Fabaceae perennial herb May-Jul None None G2 S2 1B.2 BLM_S; USFS_S Dam/Inundation, Development, Foot traffic/trampling, Grazing, Improper burning regime, Logging, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing Great Basin scrub, Lower montane coniferous forest Sandy, Volcanic 1460 1910 4790 6265 Yes 1974-01-01
No Photo Available
Astragalus oophorus var. lavinii Lavin's milk-vetch Fabaceae perennial herb Jun None None G4T2 S1 1B.2 BLM_S Great Basin scrub, Pinyon and juniper woodland 2450 3050 8040 10005 1984-01-01
No Photo Available
Astragalus preussii var. laxiflorus Lancaster milk-vetch Fabaceae perennial herb Mar-May None None G4T2 S1 1B.1 Development Chenopod scrub 700 700 2295 2295 1988-01-01
No Photo Available
Bursera microphylla little-leaf elephant tree Burseraceae perennial deciduous tree Jun-Jul None None G4 S2 2B.3 IUCN_LC; SB_CalBG/RSABG Foot traffic/trampling, Other, Recreational use (non-ORV) Sonoran desert scrub (rocky) 200 700 655 2295 1980-01-01
No Photo Available
Calamagrostis foliosa leafy reed grass Poaceae perennial herb May-Sep None CR G3 S3 4.2 Development, Grazing, Other, Recreational use (non-ORV) Coastal bluff scrub, North Coast coniferous forest Rocky 0 1220 0 4005 Yes 1980-01-01 Photo of Calamagrostis foliosa
©2011 Zoya Akulova
Carex livida livid sedge Cyperaceae perennial rhizomatous herb Jun None None G5 SH 2A Bogs and fens 0 0 0 0 1974-01-01
No Photo Available
Dudleya abramsii ssp. calcicola limestone dudleya Crassulaceae perennial herb Apr-Aug None None G4T4 S4 4.3 SB_CalBG/RSABG Chaparral, Pinyon and juniper woodland Carbonate 500 2600 1640 8530 Yes 1984-01-01
No Photo Available
Hesperolinon didymocarpum Lake County western flax Linaceae annual herb May-Jul None CE G1 S1 1B.2 SB_UCSC Dam/Inundation, Erosion/runoff, Grazing, Other, Recreational use (non-ORV) Chaparral, Cismontane woodland, Valley and foothill grassland Serpentine 330 365 1085 1200 Yes 1974-01-01 Photo of Hesperolinon didymocarpum
© 2018 Aaron Arthur
Ceanothus cyaneus Lakeside ceanothus Rhamnaceae perennial evergreen shrub Apr-Jun None None G2 S2 1B.2 BLM_S; SB_CalBG/RSABG; SB_CRES; USFS_S Development, Erosion/runoff, Non-native plant impacts, Road/trail construction/maint. Chaparral, Closed-cone coniferous forest 235 755 770 2475 1974-01-01
No Photo Available
Chenopodium simplex large-seeded goosefoot Chenopodiaceae annual herb Jun-Oct None None G5 S4 4.3 Lower montane coniferous forest (openings, disturbed areas) , PJWld (carbonate) 1400 2400 4595 7875 1980-01-01 Photo of Chenopodium simplex
©2016 Keir Morse
Cirsium scariosum var. loncholepis La Graciosa thistle Asteraceae perennial herb May-Aug FE CT G5T1 S1 1B.1 SB_CalBG/RSABG; SB_SBBG Agriculture, Altered flood/tidal/hydrologic regime, Biocides, Development, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint. Cismontane woodland, Coastal dunes, Coastal scrub, Marshes and swamps (brackish), Valley and foothill grassland Mesic, Sandy 4 220 15 720 Yes 1974-01-01
No Photo Available
Dudleya stolonifera Laguna Beach dudleya Crassulaceae perennial stoloniferous herb May-Jul FT CT G1 S1 1B.1 SB_CalBG/RSABG Development, Erosion/runoff, Foot traffic/trampling, Hybridization, Improper burning regime, Non-native plant impacts, Other, Over-collecting/poaching, Vandalism/dumping/litter, Wood cutting or brush clearing Chaparral, Cismontane woodland, Coastal scrub, Valley and foothill grassland Rocky 10 260 35 855 Yes 1974-01-01
No Photo Available
Erigeron uncialis var. uncialis limestone daisy Asteraceae perennial herb May-Jul None None G3G4T2 S2 1B.2 USFS_S Mining Great Basin scrub, Pinyon and juniper woodland, Subalpine coniferous forest Carbonate 1900 2900 6235 9515 1984-01-01 Photo of Erigeron uncialis var. uncialis
© 2011 John Game
Eriodictyon capitatum Lompoc yerba santa Namaceae perennial evergreen shrub May-Sep FE CR G2 S2 1B.2 SB_CalBG/RSABG; SB_SBBG; SB_USDA Development, Erosion/runoff, Feral pigs, Grazing, Improper burning regime, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint. Chaparral (maritime), Closed-cone coniferous forest, Coastal bluff scrub Sandy 40 900 130 2955 Yes 1974-01-01
No Photo Available
Lewisia longipetala long-petaled lewisia Montiaceae perennial herb Jul-Aug(Sep) None None G2 S2 1B.3 USFS_S Development, Grazing, ORV activity, Other Alpine boulder and rock field, Subalpine coniferous forest (mesic, rocky) Granitic 2500 2925 8205 9595 Yes 1974-01-01 Photo of Lewisia longipetala
© 2009 Gary A. Monroe
Eryngium constancei Loch Lomond button-celery Apiaceae annual/perennial herb Apr-Jun FE CE G1 S1 1B.1 SB_CalBG/RSABG Agriculture, Development, Erosion/runoff, Logging, ORV activity, Road/trail construction/maint., Surface water diversion Vernal pools 460 855 1510 2805 Yes 1980-01-01
No Photo Available
Erythronium citrinum var. citrinum lemon-colored fawn lily Liliaceae perennial bulbiferous herb Mar-May None None G4T4 S3 4.3 Chaparral, Lower montane coniferous forest Serpentine (usually) 150 1300 490 4265 1974-01-01 Photo of Erythronium citrinum var. citrinum
©2008 Keir Morse
Linanthus maculatus ssp. maculatus Little San Bernardino Mtns. linanthus Polemoniaceae annual herb Mar-May None None G2T2 S2 1B.2 BLM_S; SB_CalBG/RSABG Development, Foot traffic/trampling, Military operations, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Desert dunes, Joshua tree "woodland", Mojavean desert scrub, Sonoran desert scrub Sandy 140 1220 460 4005 Yes 1974-01-01
No Photo Available
Tonestus lyallii Lyall's tonestus Asteraceae perennial rhizomatous herb Jul-Aug None None G5 S1 2B.3 Alpine boulder and rock field 2500 2700 8205 8860 1974-01-01 Photo of Tonestus lyallii
©2020 John Doyen
Helianthus nuttallii ssp. parishii Los Angeles sunflower Asteraceae perennial rhizomatous herb Aug-Oct None None G5TX SX 1A Altered flood/tidal/hydrologic regime, Development Marshes and swamps (freshwater, coastal salt) 10 1525 35 5005 Yes 1974-01-01
No Photo Available
Heuchera brevistaminea Laguna Mountains alumroot Saxifragaceae perennial rhizomatous herb Apr-Jul(Sep) None None G2 S2 1B.3 BLM_S; SB_CRES Altered flood/tidal/hydrologic regime, Development, Foot traffic/trampling, Non-native plant impacts, Vandalism/dumping/litter Broadleafed upland forest, Chaparral, Cismontane woodland, Riparian forest Rocky 1370 2000 4495 6560 Yes 1974-01-01 Photo of Heuchera brevistaminea
© 2019 Susan McDougall
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
Lilium parryi lemon lily Liliaceae perennial bulbiferous herb Jul-Aug None None G3 S3 1B.2 SB_CalBG/RSABG; SB_CRES; USFS_S Altered flood/tidal/hydrologic regime, Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Non-native plant impacts, ORV activity, Other, Over-collecting/poaching, Pollution, Recreational use (non-ORV), Road/trail construction/maint., Surface water diversion, Vandalism/dumping/litter, Wood cutting or brush clearing Lower montane coniferous forest, Meadows and seeps, Riparian forest, Upper montane coniferous forest Mesic 1220 2745 4005 9005 1974-01-01 Photo of Lilium parryi
© 2009 Thomas Stoughton
Lupinus constancei Lassics lupine Fabaceae perennial herb Jul FE CE G1 S1 1B.1 SB_BerrySB; USFS_S Improper burning regime, ORV activity, Other Lower montane coniferous forest (serpentinite) 1500 2000 4920 6560 Yes 1980-01-01 Photo of Lupinus constancei
Image by Amelia Ryan
Malacothrix foliosa ssp. foliosa leafy malacothrix Asteraceae annual herb Mar-Jul None None G4T3 S3 4.2 Coastal scrub 3 150 10 490 1974-01-01
No Photo Available
Diplacus aridus low bush monkeyflower Phrymaceae perennial evergreen shrub Apr-Jul None None G4 S3 4.3 SB_CalBG/RSABG; SB_CRES Chaparral (rocky), Sonoran desert scrub 750 1200 2460 3935 1984-01-01
No Photo Available
Sabulina decumbens Lassics sandwort Caryophyllaceae perennial herb Jul None None G1 S1 1B.2 USFS_S Foot traffic/trampling, Grazing, ORV activity Lower montane coniferous forest, Upper montane coniferous forest Serpentine 1500 1675 4920 5495 Yes 1984-01-01 Photo of Sabulina decumbens
©2018 Jeb Bjerke
Atriplex minuscula lesser saltscale Chenopodiaceae annual herb May-Oct None None G2 S2 1B.1 SB_CalBG/RSABG Agriculture, Altered flood/tidal/hydrologic regime, Dam/Inundation, Development, Disking, Erosion/runoff, Grazing, Improper burning regime, Landfill, Non-native plant impacts, Road/trail construction/maint. Chenopod scrub, Playas, Valley and foothill grassland Alkaline, Sandy 15 200 50 655 Yes 1994-01-01 Photo of Atriplex minuscula
© 2000 Robert E. Preston, Ph.D.
Triteleia grandiflora large-flowered triteleia Themidaceae perennial bulbiferous herb Apr-Jun None None G4G5 S1 2B.1 Grazing, Other Great Basin scrub, Pinyon and juniper woodland 700 1500 2295 4920 2001-01-01 Photo of Triteleia grandiflora
©2018 John Doyen
Myosurus minimus ssp. apus little mousetail Ranunculaceae annual herb Mar-Jun None None G5T2Q S2 3.1 SB_CRES Agriculture, Development, Disking, Grazing, Non-native plant impacts, ORV activity, Other, Road/trail construction/maint., Vandalism/dumping/litter Valley and foothill grassland, Vernal pools (alkaline) 20 640 65 2100 1980-01-01
No Photo Available
Sedella leiocarpa Lake County stonecrop Crassulaceae annual herb Apr-May FE CE G1 S1 1B.1 Agriculture, Disking, Grazing, Non-native plant impacts, Other, Road/trail construction/maint. Cismontane woodland, Valley and foothill grassland, Vernal pools Vernally Mesic, Volcanic 365 790 1200 2590 Yes 1974-01-01
No Photo Available
Penstemon calcareus limestone beardtongue Plantaginaceae perennial herb Apr-May None None G3? S3? 1B.3 Foot traffic/trampling, Non-native plant impacts, Other Joshua tree "woodland", Mojavean desert scrub, Pinyon and juniper woodland Carbonate, Rocky 1065 2040 3495 6695 1974-01-01 Photo of Penstemon calcareus
Steve Matson 2017
Pentachaeta lyonii Lyon's pentachaeta Asteraceae annual herb (Feb)Mar-Aug FE CE G1 S1 1B.1 SB_CalBG/RSABG Agriculture, Development, Disking, Foot traffic/trampling, Grazing, Improper burning regime, Non-native animal impacts, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing Chaparral (openings), Coastal scrub, Valley and foothill grassland Clay, Rocky 30 690 100 2265 Yes 1974-01-01
No Photo Available
Vaccinium scoparium little-leaved huckleberry Ericaceae perennial deciduous shrub Jun-Aug None None G5 S3 2B.2 Foot traffic/trampling, Grazing, Improper burning regime, Logging Subalpine coniferous forest (rocky) 1036 2200 3400 7220 1994-01-01 Photo of Vaccinium scoparium
© 2010 Keir Morse
Physalis lobata lobed ground-cherry Solanaceae perennial herb (May)Sep-Jan None None G5 S1S2 2B.3 IUCN_LC; SB_CalBG/RSABG Development, Mining, Non-native plant impacts, ORV activity, Road/trail construction/maint. Mojavean desert scrub (decomposed granitic), Playas 500 800 1640 2625 1988-01-01 Photo of Physalis lobata
© 2012 Duncan S Bell
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
No Photo Available
Trichophorum pumilum little bulrush Cyperaceae perennial rhizomatous herb Aug None None G5 S3 2B.2 SB_CalBG/RSABG Erosion/runoff, Grazing Bogs and fens, Marshes and swamps, Riparian scrub Carbonate, Streambanks 2860 3250 9385 10665 1994-01-01
No Photo Available
Packera eurycephala var. lewisrosei Lewis Rose's ragwort Asteraceae perennial herb Mar-Jul(Aug-Sep) None None G4T2 S2 1B.2 BLM_S; SB_UCSC; USFS_S Disking, Erosion/runoff, Grazing, Improper burning regime, Logging, Mining, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Chaparral, Cismontane woodland, Lower montane coniferous forest Serpentine 274 1890 900 6200 Yes 1984-01-01
No Photo Available
Packera layneae Layne's ragwort Asteraceae perennial herb Apr-Aug FT CR G2 S2 1B.2 SB_CalBG/RSABG; SB_UCBG; SB_UCSC Agriculture, Biocides, Dam/Inundation, Development, Disking, Erosion/runoff, Grazing, Landfill, Logging, Mining, Non-native plant impacts, ORV activity, Other, Pollution, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter, Wood cutting or brush clearing Chaparral, Cismontane woodland Gabbroic (sometimes), Rocky, Serpentine (sometimes) 200 1085 655 3560 Yes 1974-01-01
No Photo Available
Silene occidentalis ssp. longistipitata long-stiped campion Caryophyllaceae perennial herb Jun-Aug None None G4T2Q S2 1B.2 SB_UCSC; USFS_S Biocides, Foot traffic/trampling, Grazing, Logging, Other, Recreational use (non-ORV), Road/trail construction/maint. Chaparral, Lower montane coniferous forest, Upper montane coniferous forest 1000 2000 3280 6560 Yes 1984-01-01 Photo of Silene occidentalis ssp. longistipitata
© 2013 Kirsten Bovee
Streptanthus bernardinus Laguna Mountains jewelflower Brassicaceae perennial herb May-Aug None None G3G4 S3S4 4.3 SB_CalBG/RSABG Development, Logging, Non-native plant impacts, ORV activity, Recreational use (non-ORV), Road/trail construction/maint. Chaparral, Lower montane coniferous forest 670 2500 2200 8205 Yes 1980-01-01
No Photo Available
Syntrichopappus lemmonii Lemmon's syntrichopappus Asteraceae annual herb Apr-May(Jun) None None G4 S4 4.3 SB_CalBG/RSABG Chaparral, Joshua tree "woodland", Pinyon and juniper woodland Gravelly (sometimes), Sandy (sometimes) 500 1830 1640 6005 Yes 1974-01-01
No Photo Available
Trifolium lemmonii Lemmon's clover Fabaceae perennial herb May-Jul None None G3 S3 4.2 SB_UCSC; SB_USDA Great Basin scrub, Lower montane coniferous forest 1500 1830 4920 6005 1974-01-01
No Photo Available
Calochortus fimbriatus late-flowered mariposa-lily Liliaceae perennial bulbiferous herb Jun-Aug None None G3 S3 1B.3 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
Camissoniopsis lewisii Lewis' evening-primrose Onagraceae annual herb Mar-May(Jun) None None G4 S4 3 Cismontane woodland, Coastal bluff scrub, Coastal dunes, Coastal scrub, Valley and foothill grassland Clay (sometimes), Sandy (sometimes) 0 300 0 985 1994-01-01
No Photo Available
Chorizanthe polygonoides var. longispina long-spined spineflower Polygonaceae annual herb Apr-Jul None None G5T3 S3 1B.2 BLM_S; SB_CalBG/RSABG; SB_CRES Agriculture, Development, Disking, 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 Chaparral, Coastal scrub, Meadows and seeps, Valley and foothill grassland, Vernal pools Clay (often) 30 1530 100 5020 1994-01-01
No Photo Available
Ericameria cuneata var. macrocephala Laguna Mountains goldenbush Asteraceae perennial shrub Sep-Dec None None G5T2T3 S2S3 1B.3 SB_CalBG/RSABG; SB_CRES Chaparral (granitic) 1195 1850 3920 6070 Yes 1994-01-01
No Photo Available
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
Stellaria longifolia long-leaved starwort Caryophyllaceae perennial rhizomatous herb May-Aug None None G5 S2 2B.2 Altered flood/tidal/hydrologic regime, Foot traffic/trampling, Grazing, Logging, Road/trail construction/maint., Waterway bank protection/maintenance Bogs and fens, Meadows and seeps (mesic), Riparian woodland, Upper montane coniferous forest 900 1830 2955 6005 1994-01-01 Photo of Stellaria longifolia
©2016 Keir Morse
Viola langsdorffii Langsdorf's violet Violaceae perennial herb May-Jul None None G4 S1 2B.1 ORV activity Bogs and fens (coastal) 2 10 5 35 1994-01-01 Photo of Viola langsdorffii
©2018 John Game
Astragalus lemmonii Lemmon's milk-vetch Fabaceae perennial herb May-Aug(Sep) None None G2 S2 1B.2 BLM_S; SB_CalBG/RSABG; USFS_S Development, Grazing, Insufficient population/stand size, Non-native plant impacts, Road/trail construction/maint. Great Basin scrub, Marshes and swamps (lake margins), Meadows and seeps 1007 2200 3305 7220 2001-01-01 Photo of Astragalus lemmonii
©2008 Steve Matson
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
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
Ceanothus cuneatus var. fascicularis Lompoc ceanothus Rhamnaceae perennial evergreen shrub Feb-Apr None None G5T4 S4 4.2 SB_CalBG/RSABG; SB_SBBG Chaparral (sandy) 5 400 15 1310 Yes 2001-01-01
No Photo Available
Parkinsonia microphylla little-leaved palo verde Fabaceae perennial deciduous shrub Apr-May None None G5 S3 4.3 SB_USDA Mojavean desert scrub (gravelly, rocky) 45 1070 150 3510 2001-01-01
No Photo Available
Cirsium praeteriens lost thistle Asteraceae perennial herb Jun-Jul None None GX SX 1A 0 100 0 330 Yes 2001-01-01
No Photo Available
Deinandra bacigalupii Livermore tarplant Asteraceae annual herb Jun-Oct None CE G1 S1 1B.1 SB_UCBG Agriculture, Biocides, Development, Disking, Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Other, Vandalism/dumping/litter Meadows and seeps (alkaline) 150 185 490 605 Yes 2001-01-01
No Photo Available
Hoita strobilina Loma Prieta hoita Fabaceae perennial herb May-Jul(Aug-Oct) None None G2? S2? 1B.1 SB_CalBG/RSABG Development, Erosion/runoff, Feral pigs, Foot traffic/trampling, Grazing, Improper burning regime, Insufficient population/stand size, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing Chaparral, Cismontane woodland, Riparian woodland Mesic, Serpentine (usually) 30 860 100 2820 Yes 2001-01-01 Photo of Hoita strobilina
© 2004 Janell Hillman
Hulsea nana little hulsea Asteraceae perennial herb Jul-Aug None None G4 S3 2B.3 SB_CalBG/RSABG Alpine boulder and rock field, Subalpine coniferous forest Gravelly (sometimes), Rocky (sometimes), Volcanic 1720 3355 5645 11010 2001-01-01 Photo of Hulsea nana
©2018 Matt C. Berger
Hymenopappus filifolius var. nanus little cutleaf Asteraceae perennial herb May-Sep None None G5T4 S3 2B.3 Pinyon and juniper woodland, Subalpine coniferous forest Carbonate 1500 3050 4920 10005 2001-01-01 Photo of Hymenopappus filifolius var. nanus
© 2012 Dylan Neubauer
Lupinus uncialis lilliput lupine Fabaceae annual herb May-Jul None None G4 S2 2B.2 BLM_S Development, Grazing, ORV activity, Other, Road/trail construction/maint. Great Basin scrub, Pinyon and juniper woodland Gravelly, Volcanic 1300 1600 4265 5250 2001-01-01
No Photo Available
Mertensia longiflora long bluebells Boraginaceae perennial herb Apr-Jun None None G4? S2 2B.2 Grazing, Logging Great Basin scrub, Lower montane coniferous forest 1525 2200 5005 7220 2001-01-01
No Photo Available
Mitellastra caulescens leafy-stemmed mitrewort Saxifragaceae perennial rhizomatous herb (Mar)Apr-Oct None None G5 S4 4.2 Foot traffic/trampling, Logging, Other, Road/trail construction/maint. Broadleafed upland forest, Lower montane coniferous forest, Meadows and seeps, North Coast coniferous forest Mesic, Roadsides (sometimes) 5 1700 15 5580 2001-01-01 Photo of Mitellastra caulescens
© 2014 Dana York
Stipa exigua little ricegrass Poaceae perennial herb Jun-Aug None None G4G5 S2 2B.3 BLM_S Grazing Great Basin scrub 2345 2420 7695 7940 2001-01-01 Photo of Stipa exigua
©2011 Steve Matson
Poa lettermanii Letterman's blue grass Poaceae perennial herb Jul-Aug None None G4 S3 2B.3 Alpine boulder and rock field (sandy, rocky) 3500 4265 11485 13995 2001-01-01
No Photo Available
Ladeania lanceolata lance-leaved scurf-pea Fabaceae perennial rhizomatous herb Apr-Aug None None G5 S2 2B.3 Development, Grazing, Other Great Basin scrub (sandy) 1220 2500 4005 8205 2001-01-01
No Photo Available
Utricularia minor lesser bladderwort Lentibulariaceae perennial stoloniferous herb (carnivorous) (aquatic) (May-Jun)Jul-Aug None None G5 S3 4.2 Bogs and fens, Marshes and swamps (shallow freshwater) 800 2900 2625 9515 2001-01-01 Photo of Utricularia minor
Barry Rice 2009
Haplodontium tehamense Lassen Peak copper moss Mniaceae moss None None G2 S2 1B.3 Alpine boulder and rock field (mesic, rock, soil, volcanic) 2500 2800 8205 9185 Yes 2001-01-01
No Photo Available
Boechera yorkii Last Chance rockcress Brassicaceae perennial herb May None None G1 S1 1B.3 Other Great Basin scrub, Pinyon and juniper woodland Carbonate 2220 2410 7285 7905 Yes 2005-01-01
No Photo Available
Carex lenticularis var. limnophila lagoon sedge Cyperaceae perennial herb Jun-Aug None None G5T5 S1 2B.2 Bogs and fens, Marshes and swamps, North Coast coniferous forest Gravelly (often) 0 6 0 20 2005-01-01 Photo of Carex lenticularis var. limnophila
©2003 Steve Matson
Castilleja lassenensis Lassen paintbrush Orobanchaceae perennial herb Jun-Sep None None G3 S3 1B.3 Altered flood/tidal/hydrologic regime, Foot traffic/trampling, Logging, Other, Recreational use (non-ORV) Meadows and seeps, Subalpine coniferous forest Volcanic 955 3120 3135 10235 Yes 2017-07-18 Photo of Castilleja lassenensis
©2018 Matt C. Berger
Phacelia lyonii Lyon's phacelia Hydrophyllaceae annual herb Apr-Oct None None G2 S2 1B.2 Chaparral, Coastal bluff scrub, Coastal dunes, Coastal scrub Gravelly, Openings, Rocky, Talus 0 460 0 1510 Yes 2021-04-15
No Photo Available
Oenothera longissima long-stem evening-primrose Onagraceae annual/perennial herb Jul-Sep None None G4 S1 2B.2 Mojavean desert scrub, Pinyon and juniper woodland Mesic (sometimes) 1000 1700 3280 5580 2006-12-27
No Photo Available
Streptanthus longisiliquus long-fruit jewelflower Brassicaceae perennial herb Apr-Sep None None G3 S3 4.3 Cismontane woodland, Lower montane coniferous forest Openings 715 1500 2345 4920 Yes 2007-08-31 Photo of Streptanthus longisiliquus
©2008 Sierra Pacific Industries
Aldama purisimae La Purisima viguiera Asteraceae shrub Apr-Sep None None G4 S1 2B.3 Improper burning regime Chaparral, Coastal bluff scrub 365 425 1200 1395 2007-09-05
No Photo Available
Navarretia gowenii Lime Ridge navarretia Polemoniaceae annual herb May-Jun None None G1 S1 1B.1 SB_UCBG Other, Recreational use (non-ORV), Wood cutting or brush clearing Chaparral 180 305 590 1000 Yes 2008-05-15
No Photo Available
Sidalcea hickmanii ssp. pillsburiensis Lake Pillsbury checkerbloom Malvaceae perennial herb Jul-Aug None None G2T1 S1 1B.2 USFS_S Other Chaparral Openings 700 700 2295 2295 Yes 2009-02-04
No Photo Available
Nemacladus secundiflorus var. secundiflorus large-flowered nemacladus Campanulaceae annual herb Apr-Jun None None G3T3? S3? 4.3 Chaparral, Valley and foothill grassland Gravelly, Openings 200 2000 655 6560 Yes 2010-06-25
No Photo Available
Erythranthe calcicola limestone monkeyflower Phrymaceae annual herb Apr-Jun None None G3 S3 1B.3 BLM_S; SB_CalBG/RSABG Joshua tree "woodland", Mojavean desert scrub, Pinyon and juniper woodland Carbonate (usually), Slopes (usually), Talus (usually) 915 2165 3000 7105 2013-06-24 Photo of Erythranthe calcicola
Steve Matson, 2017
Eriastrum ertterae Lime Ridge eriastrum Polemoniaceae annual herb Jun-Jul None CC G1 S1 1B.1 Foot traffic/trampling, Insufficient population/stand size, Non-native plant impacts, Other, Recreational use (non-ORV), Wood cutting or brush clearing Chaparral (edges, openings) Alkaline (sometimes), Sandy 200 290 655 950 Yes 2013-12-19 Photo of Eriastrum ertterae
© 2013 John Doyen
Mobergia calculiformis light gray lichen Physciaceae crustose lichen (saxicolous) None None G3 S1 3 Coastal scrub (?) 10 10 35 35 2014-03-01
No Photo Available
Meesia longiseta long seta hump moss Meesiaceae moss None None G5 S1 2B.3 Bogs and fens, Meadows and seeps, Upper montane coniferous forest Carbonate 1750 3045 5740 9990 2014-05-22
No Photo Available
Calystegia felix lucky morning-glory Convolvulaceae annual rhizomatous herb Mar-Sep None None G1Q S1 1B.1 Altered flood/tidal/hydrologic regime, Biocides, Development, Other Meadows and seeps (sometimes alkaline), Riparian scrub (alluvial) Alkaline (sometimes), Loam (sometimes) 30 215 100 705 Yes 2014-07-16
No Photo Available
Spergularia macrotheca var. longistyla long-styled sand-spurrey Caryophyllaceae perennial herb Feb-May None None G5T2 S2 1B.2 Development, Non-native plant impacts Marshes and swamps, Meadows and seeps Alkaline 0 255 0 835 Yes 2017-06-16
No Photo Available
Agave simplex lonesome agave Agavaceae perennial leaf May-Jul None None G4TNR S2 2B.3 Mojavean desert scrub, Pinyon and juniper woodland, Sonoran desert scrub Carbonate, Granitic, Rocky, Shale, Volcanic 320 1680 1050 5510 2023-03-10
No Photo Available

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 25 April 2024].