1B - Rare or Endangered (CNPS RPI)

Scientific NameNotesRarity RanksCommon Name
Allium sharsmithiaeCNPS-EB: *A2
State CNPS: 1B.3
Global Rank: G2
CNDDB Rank: S2
Sharsmith's onion
Amsinckia grandifloraCNPS-EB: *A1
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
FESA Status: FE
CESA Status: CE
large-flowered fiddleneck
Amsinckia lunarisCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G3
CNDDB Rank: S3
bent-flowered fiddleneck
Arctostaphylos auriculataCNPS-EB: *A2
State CNPS: 1B.3
Global Rank: G2
CNDDB Rank: S2
Mount Diablo manzanita
Arctostaphylos manzanita subsp. laevigataCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G5T2
CNDDB Rank: S2
Contra Costa manzanita
Arctostaphylos pallidaCNPS-EB: *A2
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
FESA Status: FT
CESA Status: CE
pallid manzanita
Astragalus tener var. tenerCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2T1
CNDDB Rank: S1
alkali milkvetch
Atriplex depressaCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
brittlescale
Atriplex minusculaCNPS-EB: *A2
State CNPS: 1B.1
Global Rank: G2
CNDDB Rank: S2
LESSER SALTSCALE
Balsamorhiza macrolepisCNPS-EB: *A1
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
big-scale balsamroot
Blepharizonia plumosaCNPS-EB: *A2
State CNPS: 1B.1
Global Rank: G1G2
CNDDB Rank: S1S2
big tarplant
Calochortus pulchellusCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Mount Diablo fairy-lantern
Calystegia purpurata subsp. saxicola(historical-1893) (ssp. purpurCNPS-EB: *A1x
State CNPS: 1B.2
Global Rank: G4T2T3
CNDDB Rank: S2S3
coastal bluff morning-glory
Campanula exiguaCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
chaparral harebell
Campanula sharsmithiaeCNPS-EB: *A1x
State CNPS: 1B.2
Global Rank: G1G2
CNDDB Rank: S1S2
SHARSMITH'S HAREBELL
Caulanthus lemmonii(formerly C. coulteri var. l.)CNPS-EB: *A1x
State CNPS: 1B.2
Global Rank: G3
CNDDB Rank: S3
Lemmon's jewelflower
Centromadia parryi subsp. congdonii(formerly Hemizonia p. ssp. c.CNPS-EB: *A2
State CNPS: 1B.1
Global Rank: G3T2
CNDDB Rank: S2
Congdon's tarplant
Chlorogalum pomeridianum var. minusCNPS-EB: *A1
State CNPS: 1B.2
Global Rank: G5T3
CNDDB Rank: S3
DWARF SOAPROOT
Chloropyron maritimum subsp. palustre(historical-1917)CNPS-EB: *A1x
State CNPS: 1B.2
Global Rank: G4?T2
CNDDB Rank: S2
Point Reyes salty bird's-beak
Chloropyron molle subsp. hispidumCNPS-EB: *A1
State CNPS: 1B.1
Global Rank: G2T1
CNDDB Rank: S1
hispid salty bird's-beak, hispid bird's-beak
Chloropyron molle subsp. molleCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2T1
CNDDB Rank: S1
FESA Status: FE
CESA Status: CR
soft salty bird's-beak, soft bird's-beak
Chloropyron palmatumCNPS-EB: *A1
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
FESA Status: FE
CESA Status: CE
palmate salty bird's-beak, palmate-bracted bird's-beak
Chorizanthe cuspidata var. cuspidata(historical-1881)CNPS-EB: *A1x
State CNPS: 1B.2
Global Rank: G2T1
CNDDB Rank: S1
San Francisco Bay spineflower
Chorizanthe robusta var. robusta(historical-1913)CNPS-EB: *A1x
State CNPS: 1B.1
Global Rank: G2T1
CNDDB Rank: S1
FESA Status: FE
robust spineflower
Cirsium andrewsiiCNPS-EB: *A1
State CNPS: 1B.2
Global Rank: G3
CNDDB Rank: S3
Franciscan thistle
Cirsium fontinale var. campylonCNPS-EB: *A1
State CNPS: 1B.2
Global Rank: G2T2
CNDDB Rank: S2
Mount Hamilton fountain thistle
Clarkia franciscanaCNPS-EB: *A1
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
FESA Status: FE
CESA Status: CE
Presidio clarkia
Cordylanthus nidulariusCNPS-EB: *A1
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
CESA Status: CR
Mount Diablo bird's-beak
Deinandra bacigalupii(formerly Hemizonia increscensCNPS-EB: *A1
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
CESA Status: CE
Livermore tarplant
Delphinium californicum subsp. interiusCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G3T3
CNDDB Rank: S3
Hospital Canyon larkspur
Delphinium recurvatumCNPS-EB: *A1x
State CNPS: 1B.2
Global Rank: G2?
CNDDB Rank: S2?
recurved larkspur
Dirca occidentalisCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
western leatherwood
Eriastrum ertteraeCNPS-EB: *A1
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
CESA Status: CC
Ertter's eriastrum
Eriogonum luteolum var. caninumCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G5T2
CNDDB Rank: S2
Tiburon buckwheat
Eriogonum nudum var. psychicolaCNPS-EB: *A1
State CNPS: 1B.1
Global Rank: G5T1
CNDDB Rank: S1
Antioch Dunes buckwheat
Eriogonum truncatumCNPS-EB: *A1
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
Mount Diablo buckwheat
Eryngium aristulatum var. hooveriCNPS-EB: *A1
State CNPS: 1B.1
Global Rank: G5T1
CNDDB Rank: S1
Hoover's button-celery
Eryngium jepsoniiCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Eryngium racemosumCNPS-EB: *A1x
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
CESA Status: CE
delta button-celery
Eryngium spinosepalumCNPS-EB: *A1
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Erysimum capitatum var. angustatum(ssp. capitatum is more commonCNPS-EB: *A1
State CNPS: 1B.1
Global Rank: G5T1
CNDDB Rank: S1
FESA Status: FE
CESA Status: CE
Contra Costa wallflower
Eschscholzia rhombipetalaCNPS-EB: *A1
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
diamond-petaled California poppy
Extriplex joaquinanaCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
San Joaquin spearscale, San Joaquin saltbush
Fritillaria falcataCNPS-EB: *A1
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
talus fritillary
Fritillaria liliaceaCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
fragrant fritillary
Gilia millefoliataCNPS-EB: *A1x
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
DARK-EYED GILIA
Helianthella castaneaCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Diablo helianthella
Hesperolinon breweriCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Brewer's western flax
Hesperolinon tehamense3 questionable ID sites. Needs field researchCNPS-EB: *A1?
State CNPS: 1B.3
Global Rank: G2
CNDDB Rank: S2
Napa western flax
Hibiscus lasiocarpos var. occidentalisCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G5T3
CNDDB Rank: S3
rose-mallow
Hoita strobilina(historical-1865)CNPS-EB: *A1x
State CNPS: 1B.1
Global Rank: G2?
CNDDB Rank: S2?
Loma Prieta hoita
Holocarpha macradeniaCNPS-EB: *A1
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
FESA Status: FT
CESA Status: CE
Santa Cruz tarplant
Horkelia cuneata var. sericea(historical-1894)CNPS-EB: *A1x
State CNPS: 1B.1
Global Rank: G4T1?
CNDDB Rank: S1?
Kellogg's horkelia
Isocoma arguta(historical-date unknown)CNPS-EB: *A1x
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
Carquinez goldenbush
Lasthenia conjugensCNPS-EB: *A2
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
FESA Status: FE
Contra Costa goldfields
Lathyrus jepsonii var. jepsoniiCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G5T2
CNDDB Rank: S2
delta tule pea, Delta tule pea
Legenere limosaCNPS-EB: *A1
State CNPS: 1B.1
Global Rank: G2
CNDDB Rank: S2
legenere
Leptosyne hamiltonii(formerly Coreopsis h.)CNPS-EB: *A1
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Mount Hamilton coreopsis
Lilaeopsis masoniiCNPS-EB: *A2
State CNPS: 1B.1
Global Rank: G2
CNDDB Rank: S2
CESA Status: CR
Mason's lilaeopsis
Madia radiata(historical-1941)CNPS-EB: *A1x
State CNPS: 1B.1
Global Rank: G3
CNDDB Rank: S3
showy golden madia, showy madia
Malacothamnus hallii(M. fasciculatus in Jepson ManCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Hall's bush-mallow
Meconella oreganaCNPS-EB: *A2
State CNPS: 1B.1
Global Rank: G2G3
CNDDB Rank: S2
Oregon meconella
Monolopia gracilensCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G3
CNDDB Rank: S3
woodland woollythreads, woodland monolopia
Navarretia goweniiCNPS-EB: *A2
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
Lime Ridge navarretia
Navarretia nigelliformis subsp. radiansCNPS-EB: *A1
State CNPS: 1B.2
Global Rank: G4T2
CNDDB Rank: S2
shining navarretia
Navarretia prostrataCNPS-EB: *A1
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
prostrate vernal pool navarretia
Oenothera deltoides subsp. howelliiCNPS-EB: *A2
State CNPS: 1B.1
Global Rank: G5T1
CNDDB Rank: S1
FESA Status: FE
CESA Status: CE
Antioch Dunes evening-primrose
Phacelia phacelioidesCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Mount Diablo phacelia
Plagiobothrys chorisianus var. chorisianus(historical-1890)CNPS-EB: *A1x
State CNPS: 1B.2
Global Rank: G3T1Q
CNDDB Rank: S1
Choris' popcornflower
Plagiobothrys diffususCNPS-EB: *A1x
State CNPS: 1B.1
Global Rank: G1Q
CNDDB Rank: S1
CESA Status: CE
San Francisco popcornflower
Puccinellia simplexCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
little alkali grass
Sanicula maritima(historical-1936)CNPS-EB: *A1x
State CNPS: 1B.1
Global Rank: G2
CNDDB Rank: S2
CESA Status: CR
adobe sanicle
Sanicula saxatilisCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
CESA Status: CR
rock sanicle
Spergularia macrotheca var. longistylaCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G5T2
CNDDB Rank: S2
large-flowered sand spurry
Streptanthus albidus subsp. peramoenusCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2T2
CNDDB Rank: S2
most beautiful jewel-flower
Streptanthus hispidusCNPS-EB: *A2
State CNPS: 1B.3
Global Rank: G2
CNDDB Rank: S2
Mount Diablo jewelflower
Suaeda californica(historical-1958)CNPS-EB: *A1x
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
FESA Status: FE
California seablite
Symphyotrichum lentum(formerly Aster lentus)CNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Suisun marsh aster
Trifolium hydrophilum(vars. amplectens and truncatuCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
saline clover
Tropidocarpum capparideumCNPS-EB: *A1
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
caper-fruited tropidocarpum