A2-ranked (4-6 populations)

Scientific NameNotesRarity RanksCommon Name
Acanthomintha lanceolataCNPS-EB: *A2
State CNPS: 4.2
Global Rank: G4
CNDDB Rank: S4
Santa Clara thornmint
Agoseris retrorsaCNPS-EB: A2spear-leaved agoseris
Agrostis halliiCNPS-EB: A2Hall's bent grass
Allium amplectensCNPS-EB: A2narrow-leaved onion
Allium falcifoliumCNPS-EB: A2sickle-leaved onion
Allium sharsmithiaeCNPS-EB: *A2
State CNPS: 1B.3
Global Rank: G2
CNDDB Rank: S2
Sharsmith's onion
Allophyllum gilioides subsp. gilioidesCNPS-EB: A2straggling gilia
Alnus rubra(A. rhombifolia is more commonCNPS-EB: A2red alder
Amsinckia eastwoodiaeCNPS-EB: A2Eastwood's fiddleneck
Amsinckia lunarisCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G3
CNDDB Rank: S3
bent-flowered fiddleneck
Androsace elongata subsp. acutaCNPS-EB: *A2
State CNPS: 4.2
Global Rank: G5?T3T4
CNDDB Rank: S3S4
California androsace
Aphyllon epigalium subsp. epigaliumCNPS-EB: A2
Apocynum androsaemifoliumCNPS-EB: A2bitter dogbane, dogbane
Aquilegia eximia(A. formosa is more common)CNPS-EB: A2Van Houtte's columbine
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 manzanita subsp. manzanitaCNPS-EB: A2common manzanita
Arctostaphylos pallidaCNPS-EB: *A2
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
FESA Status: FT
CESA Status: CE
pallid manzanita
Artemisia dracunculusCNPS-EB: A2tarragon
Arthrocnemum subterminaleCNPS-EB: A2Parish's glasswort
Aspidotis californicaCNPS-EB: A2California lace fern
Astragalus tener var. tenerCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2T1
CNDDB Rank: S1
alkali milkvetch
Atriplex coronata var. coronataCNPS-EB: *A2
State CNPS: 4.2
Global Rank: G4T3
CNDDB Rank: S3
crownscale
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
Bidens laevisCNPS-EB: A2bur-marigold
Blepharizonia plumosaCNPS-EB: *A2
State CNPS: 1B.1
Global Rank: G1G2
CNDDB Rank: S1S2
big tarplant
Calandrinia breweriCNPS-EB: *A2
State CNPS: 4.2
Global Rank: G4
CNDDB Rank: S4
Brewer's calandrinia
Calochortus pulchellusCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Mount Diablo fairy-lantern
Calochortus splendensCNPS-EB: A2splendid mariposa-lily
Calochortus umbellatusCNPS-EB: *A2
State CNPS: 4.2
Global Rank: G3?
CNDDB Rank: S3?
Oakland star-tulip
Calycadenia multiglandulosaCNPS-EB: A2sticky calycadenia
Calystegia malacophylla subsp. pedicellataCNPS-EB: A2woolly morning-glory
Campanula exiguaCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
chaparral harebell
Carex brevicaulisCNPS-EB: A2short-stemmed sedge
Carex leptopoda(formerly Carex deweyana subsp leptopodaCNPS-EB: A2slender-footed sedge, short-scaled sedge
Castilleja ambigua subsp. ambiguaCNPS-EB: *A2
State CNPS: 4.2
Global Rank: G4T4
CNDDB Rank: S3S4
Johnny-nip
Castilleja applegatei subsp. martiniiCNPS-EB: A2wavy-leaved indian paintbrush
Caulanthus flavescensCNPS-EB: A2yellow-flowered thelypodium
Ceanothus leucodermisCNPS-EB: A2chaparral whitethorn
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
Cephalanthus occidentalisCNPS-EB: A2button bush
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
Chrysolepis chrysophylla var. minorCNPS-EB: A2golden chinquapin
Cicendia quadrangularisCNPS-EB: A2timwort
Cicuta douglasiiCNPS-EB: A2water-hemlock
Cirsium occidentale var. californicum(var. venustum is more common)CNPS-EB: A2California thistle
Cirsium quercetorumCNPS-EB: A2brownie thistle
Clarkia biloba subsp. bilobaCNPS-EB: A2lobed godetia
Clarkia concinna subsp. automixa(ssp. concinna is more common)CNPS-EB: *A2
State CNPS: 4.3
Global Rank: G5?T3
CNDDB Rank: S3
Santa Clara red ribbons
Clarkia modestaCNPS-EB: A2modest clarkia
Clarkia purpurea subsp. purpurea(ssp. quadrivulnera is more coCNPS-EB: A2purple clarkia
Collinsia tinctoriaCNPS-EB: A2iodine collinsia
Convolvulus simulansCNPS-EB: *A2
State CNPS: 4.2
Global Rank: G4
CNDDB Rank: S4
small-flowered morning-glory
Corallorhiza maculata var. maculata(forma immaculata is more commCNPS-EB: A2spotted coralroot
Croton californicusCNPS-EB: A2California croton
Cryptantha corollataformerly C. decipiens. Also includes previous records for C. rattaniiCNPS-EB: A2COAST RANGE CRYPTANTHA
Cryptantha micromeresCNPS-EB: A2minute-flowered cryptantha
Cryptantha microstachysCNPS-EB: A2Tejon cryptantha
Cuscuta californica var. californicaCNPS-EB: A2California dodder
Cyperus nigerCNPS-EB: A2black sedge
Deinandra corymbosa(formerly Hemizonia corymbosa)CNPS-EB: A2coast tarweed
Deinandra kelloggii(formerly Hemizonia k.)CNPS-EB: A2Kellogg's tarweed
Delphinium californicum subsp. interiusCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G3T3
CNDDB Rank: S3
Hospital Canyon larkspur
Delphinium hansenii subsp. hanseniiCNPS-EB: A2Hansen's larkspur
Delphinium parryi subsp. parryiCNPS-EB: A2Parry's larkspur
Dendromecon rigidaCNPS-EB: A2bush poppy
Dicentra formosaCNPS-EB: A2Pacific bleeding heart, bleeding heart
Diplacus douglasii(formerly Mimulus d.)CNPS-EB: A2Douglas monkeyflower
Diplacus rattanii(formerly Mimulus rattanii)CNPS-EB: A2Rattan monkeyflower
Dirca occidentalisCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
western leatherwood
Dudleya farinosaCNPS-EB: A2bluff lettuce, powdery dudleya
Echinodorus berteroiCNPS-EB: A2burhead
Elatine californicaCNPS-EB: A2waterwort
Enemion occidentale(formerly Isopyrum o.)CNPS-EB: A2western rue-anemone
Enemion stipitatum(formerly Isopyrum s.)CNPS-EB: A2Siskiyou rue-anemone
Equisetum laevigatumCNPS-EB: A2smooth scouring rush
Eragrostis hypnoidesCNPS-EB: A2
Eriastrum abramsiiCNPS-EB: A2Abram's eriastrum
Ericameria nauseosa var. mohavensisCNPS-EB: A2Mojave rabbitbrush, rubber rabbitbrush
Eriogonum covilleanumCNPS-EB: A2Coville's wild buckwheat, Coville's eriogonum
Eriogonum fasciculatum var. polifoliumCNPS-EB: A2Mojave desert California buckwheat, California buckwheat
Eriogonum luteolum var. caninumCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G5T2
CNDDB Rank: S2
Tiburon buckwheat
Eriogonum luteolum var. luteolumCNPS-EB: A2golden-carpet wild buckwheat, golden carpet
Eriogonum roseumCNPS-EB: A2wand wild buckwheat, virgate buckwheat
Eriogonum umbellatum var. bahiiformePreviously mis-recorded as var. smallianum which does not occur in the East BayCNPS-EB: *A2
State CNPS: 4.2
Global Rank: G5T3
CNDDB Rank: S3
Small's sulphur flower, bay buckwheat
Eriophyllum jepsoniiCNPS-EB: *A2
State CNPS: 4.3
Global Rank: G3
CNDDB Rank: S3
Jepson's woolly sunflower
Eriophyllum staechadifoliumCNPS-EB: A2seaside woolly sunflower, lizard-tail
Eryngium castrenseCNPS-EB: A2great valley coyote-thistle, Vasey's coyote-thistle
Eryngium jepsoniiCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Erythranthe nasutaCNPS-EB: A2shy monkeyflower
Extriplex joaquinanaCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
San Joaquin spearscale, San Joaquin saltbush
Festuca octofloraCNPS-EB: A2sixweeks grass, slender fescue
Fritillaria agrestisCNPS-EB: *A2
State CNPS: 4.2
Global Rank: G3
CNDDB Rank: S3
stinkbells
Fritillaria liliaceaCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
fragrant fritillary
Galium andrewsii subsp. gatenseCNPS-EB: *A2
State CNPS: 4.2
Global Rank: G5T3
CNDDB Rank: S3
phlox-leaf serpentine bedstraw, serpentine bedstraw
Garrya flavescensCNPS-EB: A2silk tassel bush
Githopsis diffusa subsp. robustaCNPS-EB: A2southern bluecup
Helenium bigelovii(H. puberulum is more common)CNPS-EB: A2Bigelow's sneezeweed
Helianthella californica var. californicaCNPS-EB: A2California helianthella
Helianthella castaneaCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Diablo helianthella
Hesperevax caulescens(H. sparsiflora is more commonCNPS-EB: *A2
State CNPS: 4.2
Global Rank: G3
CNDDB Rank: S3
hogwallow starfish
Hesperolinon breweriCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Brewer's western flax
Hesperolinon micranthumCNPS-EB: A2small-flowered dwarf flax
Hibiscus lasiocarpos var. occidentalisCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G5T3
CNDDB Rank: S3
rose-mallow
Holozonia filipesCNPS-EB: A2whitecrown, holozonia
Hordeum brachyantherum subsp. californicum(ssp. brachyantherum is more commonCNPS-EB: A2California barley
Hordeum jubatum subsp. jubatumCNPS-EB: A2foxtail barley, squirreltail barley
Horkelia californica var. elataCNPS-EB: A2tall horkelia
Hosackia crassifolia var. crassifoliaCNPS-EB: A2broad-leaved lotus
Hydrocotyle ranunculoidesCNPS-EB: A2floating marsh pennywort
Keckiella breviflora var. brevifloraCNPS-EB: A2gaping penstemon
Lastarriaea coriaceaCNPS-EB: A2leather-spineflower, lastarriaea
Lasthenia conjugensCNPS-EB: *A2
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
FESA Status: FE
Contra Costa goldfields
Lasthenia glabrata subsp. glabrataCNPS-EB: A2yellow-ray goldfields
Lasthenia microglossaCNPS-EB: A2small-ray goldfields
Lathyrus jepsonii var. jepsoniiCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G5T2
CNDDB Rank: S2
delta tule pea, Delta tule pea
Layia chrysanthemoidesCNPS-EB: A2smooth layia
Layia gaillardioidesCNPS-EB: A2woodland layia
Lepidium oxycarpumCNPS-EB: A2sharp-podded pepper-grass
Leptosiphon ambiguus(formerly Linanthus a.)CNPS-EB: *A2
State CNPS: 4.2
Global Rank: G4
CNDDB Rank: S4
serpentine leptosiphon, serpentine linanthus
Leptosiphon aureus(formerly L.acicularis, Linanthus acicularis)CNPS-EB: *A2
State CNPS: 4.2
Global Rank: G4?
CNDDB Rank: S4?
bristly leptosiphon, bristly linanthus
Lessingia nemacladaCNPS-EB: A2slender-stemmed lessignia
Lessingia pectinata var. tenuipesCNPS-EB: A2valley lessingia
Lessingia tenuisCNPS-EB: *A2
State CNPS: 4.3
Global Rank: G4
CNDDB Rank: S4
spring lessingia
Lewisia rediviva var. redivivaCNPS-EB: A2bitterroot
Ligusticum apiifoliumCNPS-EB: A2Pacific lovage
Lilaeopsis masoniiCNPS-EB: *A2
State CNPS: 1B.1
Global Rank: G2
CNDDB Rank: S2
CESA Status: CR
Mason's lilaeopsis
Limosella acaulisCNPS-EB: A2southern mudwort
Lupinus arboreusCNPS-EB: A2yellow bush lupine
Lycopus americanusCNPS-EB: A2cutleaf bugleweed
Malacothamnus hallii(M. fasciculatus in Jepson ManCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Hall's bush-mallow
Malacothrix clevelandiiCNPS-EB: A2Cleveland's malacothrix
Meconella oreganaCNPS-EB: *A2
State CNPS: 1B.1
Global Rank: G2G3
CNDDB Rank: S2
Oregon meconella
Mentzelia dispersaCNPS-EB: A2Nada stick-leaf
Mentzelia micranthaCNPS-EB: A2small-flowered stick-leaf
Micropus californicus var. subvestitus(var. californicus is more common)CNPS-EB: A2slender cottonweed
Microseris douglasii subsp. tenella(subsp douglasii is more common)CNPS-EB: A2silver puffs
Microseris sylvaticaCNPS-EB: *A2
State CNPS: 4.2
Global Rank: G4
CNDDB Rank: S4
sylvan microseris
Moehringia macrophyllaCNPS-EB: A2large-leaved sandwort, big-leaf sandwort
Monardella douglasiiCNPS-EB: A2fenestra monardella, Fenestra monardella
Monolopia gracilensCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G3
CNDDB Rank: S3
woodland woollythreads, woodland monolopia
Navarretia atractyloidesCNPS-EB: A2holly-leaved navarretia
Navarretia cotulifoliaCNPS-EB: *A2
State CNPS: 4.2
Global Rank: G4
CNDDB Rank: S4
cotula navarretia
Navarretia goweniiCNPS-EB: *A2
State CNPS: 1B.1
Global Rank: G1
CNDDB Rank: S1
Lime Ridge navarretia
Navarretia intertextaCNPS-EB: A2needle-leaved navarretia
Navarretia viscidulaCNPS-EB: A2sticky navarretia
Nuttallanthus texanusCNPS-EB: A2blue toadflax
Oenothera deltoides subsp. cognataCNPS-EB: A2desert evening-primrose
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
Panicum capillareCNPS-EB: A2witch grass
Pectocarya penicillataCNPS-EB: A2northern pectocarya, winged pectocarya
Pediomelum californicumCNPS-EB: A2indian breadroot
Penstemon heterophyllus var. purdyiCNPS-EB: A2foothill penstemon
Perideridia oreganaCNPS-EB: A2yampah
Persicaria hydropiperoides(formerly Polygonum h.)CNPS-EB: A2false waterpepper, water-pepper
Phacelia malvifolia var. malvifoliaCNPS-EB: A2stinging phacelia
Phacelia phacelioidesCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Mount Diablo phacelia
Piperia michaeliiCNPS-EB: *A2
State CNPS: 4.2
Global Rank: G3
CNDDB Rank: S3
Michael's rein-orchid
Plagiobothrys humistratusCNPS-EB: A2low popcornflower, dwarf allocarya
Plagiobothrys undulatusCNPS-EB: A2wavy-stemmed popcornflower, coast allocarya
Plantago subnudaCNPS-EB: A2Mexican plantain
Poa howelliiCNPS-EB: A2Howell's bluegrass
Pogogyne zizyphoroidesCNPS-EB: A2Sacramento beardstyle
Potentilla anserina subsp. pacificaCNPS-EB: A2Pacific silverweed
Psilocarphus oregonusCNPS-EB: A2Oregon woollyheads, Oregon woolly-marbles
Puccinellia simplexCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
little alkali grass
Quercus palmeriCNPS-EB: A2Palmer's oak
Ranunculus lobbiiCNPS-EB: *A2
State CNPS: 4.2
Global Rank: G4
CNDDB Rank: S3
Lobb's aquatic buttercup
Ribes aureum var. gracillimumCNPS-EB: A2golden currant
Ribes quercetorumCNPS-EB: A2oakwoods gooseberry, oak gooseberry
Rumex fueginusCNPS-EB: A2golden dock
Rumex occidentalisCNPS-EB: A2western dock
Salix scoulerianaCNPS-EB: A2Scouler's willow
Sanicula laciniataCNPS-EB: A2coast sanicle
Sanicula saxatilisCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
CESA Status: CR
rock sanicle
Sedum radiatum subsp. radiatum(formerly S. radiatum)CNPS-EB: A2coast range stonecrop, star-fruited stonecrop
Senecio flaccidus var. douglasiiCNPS-EB: A2Douglas' threadleaf ragwort, shrubby butterweed
Spergularia macrotheca var. leucanthaCNPS-EB: A2large-flowered sand spurry
Spergularia macrotheca var. longistylaCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G5T2
CNDDB Rank: S2
large-flowered sand spurry
Spergularia macrotheca var. macrothecaCNPS-EB: A2large-flowered sand spurry
Stachys ajugoides(var. rigida is more common)CNPS-EB: A2bugle hedge nettle
Stephanomeria elataCNPS-EB: A2stephanomeria
Stipa lemmonii var. lemmonii(formerly Achnatherum lemmonii)CNPS-EB: A2Lemmon needlegrass
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
Symphyotrichum lanceolatum var. hesperium(formerly Aster lanceolatus ssCNPS-EB: A2marsh aster
Symphyotrichum lentum(formerly Aster lentus)CNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
Suisun marsh aster
Trifolium barbigerumCNPS-EB: A2bearded clover
Trifolium hydrophilum(vars. amplectens and truncatuCNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2
saline clover
Trillium ovatum subsp. ovatumCNPS-EB: A2white trillium
Triodanis bifloraCNPS-EB: A2Venus' looking-glass
Trisetum canescensCNPS-EB: A2tall trisetum
Viburnum ellipticumCNPS-EB: *A2
State CNPS: 2B.3
Global Rank: G4G5
CNDDB Rank: S3
oval-leaved viburnum
Vicia hasseiCNPS-EB: A2slender vetch
Viola douglasiiCNPS-EB: A2Douglas' violet, golden violet
Viola glabellaCNPS-EB: A2stream violet, smooth yellow violet
Viola sempervirensCNPS-EB: A2evergreen violet, redwood violet
Viola sheltoniiCNPS-EB: A2Shelton's violet, fan violet