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CNPS Rare Plant Inventory


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57 matches found. Click on scientific name for details

Search Criteria: Common Name starts with I

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 myrtifolia Ione manzanita Ericaceae perennial evergreen shrub Nov-Mar FT None G1 S1 1B.2 SB_UCBG Agriculture, Development, Disease, Grazing, Mining, ORV activity, Road/trail construction/maint., Vandalism/dumping/litter Chaparral, Cismontane woodland Acidic, Clay (sometimes), Sandy (sometimes) 60 580 195 1905 Yes 1974-01-01 Photo of Arctostaphylos myrtifolia
© 2006 Steve Matson
Arctostaphylos crustacea ssp. insulicola island manzanita Ericaceae perennial evergreen shrub Jun-Mar None None G4T3 S3 4.2 Chaparral, Closed-cone coniferous forest Rocky 90 520 295 1705 Yes 1974-01-01 Photo of Arctostaphylos crustacea ssp. insulicola
© 2019 Zoya Akulova
Calochortus excavatus Inyo County star-tulip Liliaceae perennial bulbiferous herb Apr-Jul None None G2 S2 1B.1 BLM_S; SB_SBBG; USFS_S Grazing, Groundwater pumping, Improper burning regime, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Chenopod scrub, Meadows and seeps Alkaline, Mesic 1150 2000 3775 6560 Yes 1974-01-01
No Photo Available
Calystegia macrostegia ssp. amplissima island morning-glory Convolvulaceae perennial herb Feb-Jul None None G4G5T4 S4 4.3 SB_CalBG/RSABG Coastal bluff scrub, Coastal dunes, Valley and foothill grassland Rocky 10 275 35 900 Yes 1984-01-01
No Photo Available
Deinandra clementina island tarplant Asteraceae perennial deciduous shrub (Apr)May-Jul None None G4 S4 4.3 SB_CalBG/RSABG Coastal bluff scrub, Valley and foothill grassland 15 200 50 655 Yes 1980-01-01
No Photo Available
Carex idahoa Idaho sedge Cyperaceae perennial rhizomatous herb Jul None None G3 S1 2B.3 Meadows and seeps, Subalpine coniferous forest 2850 3200 9350 10500 1988-01-01
No Photo Available
Hazardia detonsa island hazardia Asteraceae perennial evergreen shrub Mar-Nov None None G4 S4 4.3 SB_CalBG/RSABG Chaparral, Closed-cone coniferous forest, Coastal scrub Rocky, Volcanic 5 580 15 1905 Yes 1974-01-01 Photo of Hazardia detonsa
© 2009 Zoya Akulova
Crocanthemum greenei island rush-rose Cistaceae perennial evergreen shrub (Jan)Mar-Jul(Aug) FT None G3 S3 1B.2 SB_SBBG Erosion/runoff, Foot traffic/trampling, Grazing, Non-native animal impacts, Non-native plant impacts, Other, Over-collecting/poaching, Road/trail construction/maint. Chaparral, Cismontane woodland, Closed-cone coniferous forest, Coastal scrub Openings, Rocky 15 490 50 1610 Yes 1974-01-01
No Photo Available
Brodiaea rosea Indian Valley brodiaea Themidaceae perennial bulbiferous herb May-Jun None CE G2Q S2 3.1 BLM_S; USFS_S Dam/Inundation, Grazing, Mining, Non-native plant impacts, ORV activity, Other, Surface water diversion, Vandalism/dumping/litter Chaparral, Cismontane woodland, Closed-cone coniferous forest, Valley and foothill grassland Serpentine 335 1450 1100 4755 Yes 1974-01-01 Photo of Brodiaea rosea
© 2014 Robert E. Preston, Ph.D.
Lomatium foeniculaceum ssp. inyoense Inyo lomatium Apiaceae perennial herb Jun-Jul None None G5T3 S3 4.3 Subalpine coniferous forest (carbonate) 2195 3200 7200 10500 1980-01-01
No Photo Available
Castilleja hololeuca island white-felted paintbrush Orobanchaceae perennial herb (hemiparasitic) Feb-Sep None None G3 S3 1B.2 Chaparral, Closed-cone coniferous forest, Coastal scrub Rocky 20 365 65 1200 Yes 1980-01-01
No Photo Available
Ceanothus megacarpus var. insularis island ceanothus Rhamnaceae perennial evergreen shrub Dec-Apr None None G5T4 S4 4.3 SB_CalBG/RSABG Chaparral (sandy) 30 600 100 1970 Yes 1980-01-01
No Photo Available
Aristocapsa insignis Indian Valley spineflower Polygonaceae annual herb May-Sep None None G1 S1 1B.2 Dam/Inundation Cismontane woodland (sandy) 300 600 985 1970 Yes 1980-01-01
No Photo Available
Cercocarpus betuloides var. blancheae island mountain-mahogany Rosaceae perennial evergreen shrub Feb-May None None G5T4 S4 4.3 SB_CalBG/RSABG Chaparral, Closed-cone coniferous forest 30 600 100 1970 Yes 1974-01-01
No Photo Available
Eriodictyon altissimum Indian Knob mountainbalm Namaceae perennial evergreen shrub Mar-Jun FE CE G1 S1 1B.1 SB_CalBG/RSABG; SB_USDA Development, Erosion/runoff, Foot traffic/trampling, Improper burning regime, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing Chaparral (maritime), Cismontane woodland, Coastal scrub Sandstone 80 270 260 885 Yes 1974-01-01
No Photo Available
Eriogonum apricum var. apricum Ione buckwheat Polygonaceae perennial herb Jul-Oct FE CE G2T1 S1 1B.1 SB_UCBG Development, Improper burning regime, Mining, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Vandalism/dumping/litter Chaparral (openings, Ione soil) 60 145 195 475 Yes 1974-01-01
No Photo Available
Eriogonum apricum var. prostratum Irish Hill buckwheat Polygonaceae perennial herb Jun-Jul FE CE G2T1 S1 1B.1 Development, Grazing, Mining, ORV activity, Road/trail construction/maint. Chaparral (openings, Ione soil) 90 120 295 395 Yes 1974-01-01
No Photo Available
Eriogonum grande var. grande island buckwheat Polygonaceae perennial herb Jun-Oct None None G4T4 S4 4.2 SB_CalBG/RSABG Coastal bluff scrub, Coastal scrub, Valley and foothill grassland 3 460 10 1510 Yes 1974-01-01
No Photo Available
Eriogonum vestitum Idria buckwheat Polygonaceae annual herb Apr-Aug None None G3 S3 4.3 Valley and foothill grassland 235 900 770 2955 Yes 1974-01-01
No Photo Available
Erysimum insulare island wallflower Brassicaceae perennial herb Mar-Jul None None G3 S3 1B.3 SB_CalBG/RSABG Coastal bluff scrub, Coastal dunes 0 300 0 985 Yes 1974-01-01
No Photo Available
Eschscholzia ramosa island poppy Papaveraceae annual herb Mar-May None None G4 S4 4.3 SB_CalBG/RSABG; SB_SBBG Chaparral, Coastal bluff scrub, Coastal scrub 0 380 0 1245 1974-01-01
No Photo Available
Heuchera maxima island alumroot Saxifragaceae perennial rhizomatous herb Feb-May None None G3 S3 1B.2 SB_SBBG Erosion/runoff Chaparral, Cismontane woodland, Coastal bluff scrub, Coastal scrub Rocky 10 500 35 1640 Yes 1974-01-01 Photo of Heuchera maxima
© 2014 Steve Matson
Hulsea vestita ssp. inyoensis Inyo hulsea Asteraceae perennial herb Apr-Jun None None G5T2T3 S1S2 2B.2 Erosion/runoff, Mining, Recreational use (non-ORV), Road/trail construction/maint. Chenopod scrub, Great Basin scrub, Pinyon and juniper woodland Rocky 1645 3000 5395 9845 1980-01-01 Photo of Hulsea vestita ssp. inyoensis
© 2011 Steve Matson
Jepsonia malvifolia island jepsonia Saxifragaceae perennial herb Aug-Jan None None G4 S4 4.2 Chaparral, Coastal scrub 15 1000 50 3280 1974-01-01 Photo of Jepsonia malvifolia
© 2020 Keir Morse
Lavatera assurgentiflora ssp. assurgentiflora island mallow Malvaceae perennial evergreen shrub Mar-Nov None None G1T1 S1 1B.1 SB_SBBG Coastal bluff scrub, Coastal scrub Rocky (sometimes), Sandy (sometimes) 15 245 50 805 Yes 1974-01-01
No Photo Available
Acmispon dendroideus var. dendroideus island broom Fabaceae perennial shrub Jan-Aug(Oct) None None G4T3 S3 4.2 SB_CalBG/RSABG; SB_USDA Chaparral, Cismontane woodland, Closed-cone coniferous forest, Coastal bluff scrub, Coastal scrub 3 460 10 1510 Yes 1974-01-01 Photo of Acmispon dendroideus var. dendroideus
© 2003 Keir Morse
Lupinus albifrons var. johnstonii interior bush lupine Fabaceae perennial shrub May-Jul None None G4T4 S4 4.3 Chaparral, Lower montane coniferous forest Decomposed granitic 1500 2500 4920 8205 Yes 1974-01-01
No Photo Available
Lycopodiella inundata inundated bog-clubmoss Lycopodiaceae perennial rhizomatous herb Jun-Sep None None G5 S1 2B.2 IUCN_LC Altered flood/tidal/hydrologic regime, Dam/Inundation, Mining, Non-native plant impacts Bogs and fens (coastal), Lower montane coniferous forest (mesic), Marshes and swamps (lake margins) 5 1000 15 3280 1980-01-01 Photo of Lycopodiella inundata
© 2021 Scot Loring
Berberis pinnata ssp. insularis island barberry Berberidaceae perennial evergreen shrub Feb-May FE CE G5T1 S1 1B.2 SB_SBBG Erosion/runoff Chaparral, Cismontane woodland, Closed-cone coniferous forest, Coastal scrub Rocky 75 400 245 1310 Yes 1980-01-01
No Photo Available
Malacothamnus aboriginum Indian Valley bush-mallow Malvaceae perennial deciduous shrub Apr-Oct None None G3 S3 1B.2 BLM_S; SB_CalBG/RSABG; SB_SBBG Biocides, Grazing, Mining, Non-native plant impacts, ORV activity, Road/trail construction/maint. Chaparral, Cismontane woodland Burned areas (often), Granitic, Rocky 150 1700 490 5580 Yes 1974-01-01 Photo of Malacothamnus aboriginum
© 2009 Keir Morse
Malacothrix squalida island malacothrix Asteraceae annual herb Apr-Jul FE None G1 S1 1B.1 SB_SBBG Erosion/runoff, Non-native plant impacts Chaparral, Cismontane woodland, Coastal bluff scrub 15 200 50 655 Yes 1974-01-01
No Photo Available
Diplacus parviflorus island bush monkeyflower Phrymaceae perennial evergreen shrub Mar-Oct None None G4 S4 4.3 SB_CalBG/RSABG; SB_CRES Chaparral, Closed-cone coniferous forest, Coastal bluff scrub, Coastal scrub Rocky 3 535 10 1755 Yes 1988-01-01 Photo of Diplacus parviflorus
© 2003 Keir Morse
Phacelia inyoensis Inyo phacelia Hydrophyllaceae annual herb Apr-Aug None None G2 S2 1B.2 BLM_S; SB_SBBG; USFS_S Foot traffic/trampling, Grazing, Non-native plant impacts, ORV activity, Recreational use (non-ORV) Meadows and seeps (alkaline) 915 3200 3000 10500 Yes 1974-01-01
No Photo Available
Penstemon papillatus Inyo beardtongue Plantaginaceae perennial herb Jun-Jul None None G3 S3 4.3 Pinyon and juniper woodland, Subalpine coniferous forest Granitic, Rocky 2000 3000 6560 9845 Yes 1974-01-01
No Photo Available
Arctostaphylos parryana ssp. tumescens interior manzanita Ericaceae perennial evergreen shrub Feb-Apr None None G4T3T4 S3S4 4.3 USFS_S Chaparral (montane), Cismontane woodland 2100 2310 6890 7580 Yes 2001-01-01
No Photo Available
Laphamia inyoensis Inyo rock daisy Asteraceae perennial herb Jun-Aug None CC G2 S2 1B.2 BLM_S; SB_CalBG/RSABG; SB_SBBG Foot traffic/trampling, Mining, Non-native plant impacts, Other, Recreational use (non-ORV), Road/trail construction/maint. Great Basin scrub, Pinyon and juniper woodland Carbonate, Rocky 1800 2710 5905 8890 Yes 1974-01-01 Photo of Laphamia inyoensis
© 2019 Cheryl Birker
Quercus pacifica island scrub oak Fagaceae perennial evergreen shrub Mar-Apr None None G4 S4 4.2 IUCN_EN Chaparral, Cismontane woodland, Closed-cone coniferous forest 0 430 0 1410 Yes 2001-01-01
No Photo Available
Rhamnus pirifolia island redberry Rhamnaceae perennial evergreen tree Feb-Jul None None G4 S4 4.2 SB_CalBG/RSABG Chaparral, Cismontane woodland, Closed-cone coniferous forest, Coastal scrub 20 430 65 1410 2001-01-01
No Photo Available
Calochortus weedii var. intermedius intermediate mariposa-lily Liliaceae perennial bulbiferous herb May-Jul None None G3G4T3 S3 1B.2 SB_CalBG/RSABG; USFS_S Development, Erosion/runoff, Foot traffic/trampling, Grazing, Improper burning regime, Landfill, Non-native plant impacts, ORV activity, Other, Recreational use (non-ORV), Road/trail construction/maint., Wood cutting or brush clearing Chaparral, Coastal scrub, Valley and foothill grassland Rocky 105 855 345 2805 Yes 1994-01-01
No Photo Available
Eriogonum microthecum var. lapidicola Inyo Mountains buckwheat Polygonaceae perennial deciduous shrub Jul-Sep None None G5T4 S2S3 4.3 SB_CalBG/RSABG Pinyon and juniper woodland, Subalpine coniferous forest Carbonate, Rocky 2600 3100 8530 10170 1994-01-01
No Photo Available
Quercus tomentella island oak Fagaceae perennial evergreen tree Mar-Jul None None G3G4 S3S4 4.2 IUCN_EN; SB_CRES Chaparral, Cismontane woodland, Closed-cone coniferous forest, Riparian woodland 15 730 50 2395 1974-01-01
No Photo Available
Solanum clokeyi island nightshade Solanaceae perennial herb Mar-Jul None None G3 S3 4.2 Chaparral, Cismontane woodland, Coastal scrub 2 395 5 1295 1980-01-01
No Photo Available
Agave utahensis var. eborispina ivory-spined agave Agavaceae perennial leaf May-Jun None None G4T3 S2 1B.3 BLM_S; SB_CalBG/RSABG Mojavean desert scrub (carbonate, rocky slopes) 945 1370 3100 4495 1980-01-01 Photo of Agave utahensis var. eborispina
© 2011 Zoya Akulova
Allium atrorubens var. cristatum Inyo onion Alliaceae perennial bulbiferous herb Apr-Jun None None G4T4 S4 4.3 Joshua tree "woodland", Mojavean desert scrub, Pinyon and juniper woodland Rocky (sometimes), Sandy (sometimes) 1200 2560 3935 8400 2001-01-01 Photo of Allium atrorubens var. cristatum
© 2005 James M. Andre
Artemisia nesiotica island sagebrush Asteraceae perennial evergreen shrub Apr-Sep None None G3 S3 4.3 Coastal scrub (rocky), Valley and foothill grassland 5 175 15 575 Yes 2001-01-01
No Photo Available
Astragalus cimae var. sufflatus inflated Cima milk-vetch Fabaceae perennial herb Apr-Jun None None G3T3 S3 1B.3 BLM_S; SB_CalBG/RSABG; USFS_S Road/trail construction/maint. Great Basin scrub, Pinyon and juniper woodland Carbonate, Rocky 1500 2075 4920 6810 Yes 1974-01-01
No Photo Available
Astragalus inyoensis Inyo milk-vetch Fabaceae perennial herb May-Jul None None G3 S3 4.2 IUCN_NT; SB_CalBG/RSABG; SB_USDA Great Basin scrub, Pinyon and juniper woodland Carbonate (sometimes), Volcanic (usually) 1500 3050 4920 10005 1974-01-01
No Photo Available
Dudleya virens ssp. insularis island green dudleya Crassulaceae perennial herb Apr-Jun None None G3?T3 S3 1B.2 Development, Foot traffic/trampling, Non-native plant impacts, Recreational use (non-ORV) Coastal bluff scrub, Coastal scrub Rocky 5 300 15 985 Yes 2001-01-01
No Photo Available
Gilia interior inland gilia Polemoniaceae annual herb Mar-May None None G4 S4 4.3 Cismontane woodland, Joshua tree "woodland", Lower montane coniferous forest Rocky 700 1700 2295 5580 Yes 2001-01-01 Photo of Gilia interior
© 2015 Steve Matson
Lupinus pusillus var. intermontanus intermontane lupine Fabaceae annual herb May-Jun None None G5T5? S2 2B.3 Grazing, Non-native plant impacts, Other, Road/trail construction/maint. Great Basin scrub (sandy) 1220 2060 4005 6760 2001-01-01
No Photo Available
Rhinotropis intermontana intermountain milkwort Polygalaceae perennial shrub Jun-Jul(Oct) None None G4 S2 2B.1 Development, Foot traffic/trampling, ORV activity Pinyon and juniper woodland 2010 3080 6595 10105 2001-01-01
No Photo Available
Mentzelia inyoensis Inyo blazing star Loasaceae perennial herb Apr-Oct None None G2 S1 1B.1 BLM_S; SB_CalBG/RSABG; USFS_S Non-native animal impacts Great Basin scrub, Pinyon and juniper woodland Carbonate (sometimes), Rocky 1158 1980 3800 6495 2007-02-05 Photo of Mentzelia inyoensis
© 2019 Steve Matson
Juncus interior inland rush Juncaceae perennial herb Jun-Aug None None G4 S1 2B.2 Pinyon and juniper woodland 1830 1845 6005 6055 2009-09-08 Photo of Juncus interior
© 2011 James M. Andre
Monardella hypoleuca ssp. intermedia intermediate monardella Lamiaceae perennial rhizomatous herb Apr-Sep None None G4T2? S2? 1B.3 Development, Foot traffic/trampling, Mining, Road/trail construction/maint. Chaparral, Cismontane woodland, Lower montane coniferous forest (sometimes) 400 1250 1310 4100 Yes 2012-10-16 Photo of Monardella hypoleuca ssp. intermedia
© 2016 Ron Vanderhoff
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
Chorizanthe aphanantha Irish Hills spineflower Polygonaceae annual herb Apr-Jun None None G1 S1 1B.1 SB_SBBG Chaparral (edges, openings), Coastal scrub Gravelly, Rocky, Serpentine 100 370 330 1215 Yes 2019-06-11 Photo of Chorizanthe aphanantha
© 2019 Keir Morse
Erythranthe serpentinicola Irish Hills monkeyflower Phrymaceae annual herb Feb-May None None G1 S1 1B.1 Foot traffic/trampling, Other Chaparral (openings), Meadows and seeps (edges) Mesic, Openings, Rocky, Serpentine 60 360 195 1180 2022-03-30
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 19 April 2024].