| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Acanthomintha lanceolata | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | Santa Clara thornmint | |
| Agoseris heterophylla var. heterophylla | CNPS-EB: C | ||
| Agoseris heterophylla var. unknown | Agoseris heterophylla split into 2 vars. in 2011 Jepson Manual, need field work to resolve vars. | CNPS-EB: B? | annual agoseris |
| Allium amplectens | CNPS-EB: A2 | narrow-leaved onion | |
| Allium bolanderi var. bolanderi | CNPS-EB: A1 | Bolander's onion | |
| Amelanchier utahensis | CNPS-EB: C | Utah service-berry | |
| Anemopsis californica | CNPS-EB: B | yerba mansa, lizard tail | |
| Apocynum cannabinum | CNPS-EB: B | dogbane, Indian-hemp | |
| Aquilegia eximia | (A. formosa is more common) | CNPS-EB: A2 | Van Houtte's columbine |
| Arctostaphylos glauca | CNPS-EB: C | big-berried manzanita | |
| Berberis aquifolium var. dictyota | CNPS-EB: A1 | Jepson's mahonia | |
| Brickellia californica | CNPS-EB: C | California brickellbush, California brickellia | |
| Calystegia malacophylla subsp. pedicellata | CNPS-EB: A2 | woolly morning-glory | |
| Camissonia contorta | CNPS-EB: C | contorted primrose | |
| Carex nudata | CNPS-EB: B | torrent sedge | |
| Carex praegracilis | CNPS-EB: C | black creeper sedge, freeway sedge, deer-bed sedge | |
| Carex serratodens | CNPS-EB: C | saw-toothed sedge, bifid sedge | |
| Castilleja applegatei subsp. martinii | CNPS-EB: A2 | wavy-leaved indian paintbrush | |
| Castilleja subinclusa subsp. subinclusa | CNPS-EB: A1 | long-leaved indian paintbrush | |
| Ceanothus leucodermis | CNPS-EB: A2 | chaparral whitethorn | |
| Cirsium cymosum var. cymosum | CNPS-EB: C | peregrine thistle | |
| Cirsium fontinale var. campylon | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2T2 CNDDB Rank: S2 | Mount Hamilton fountain thistle | |
| Clarkia gracilis subsp. gracilis | CNPS-EB: C | summer's darling | |
| Clarkia modesta | CNPS-EB: A2 | modest clarkia | |
| Claytonia exigua subsp. exigua | CNPS-EB: C | common montia | |
| Clematis ligusticifolia | CNPS-EB: C | western virgin's bower, virgin's bower | |
| Collinsia parviflora | CNPS-EB: B | blue-eyed Mary | |
| Cordylanthus rigidus subsp. rigidus | CNPS-EB: A1 | stiffly-branched bird's-beak | |
| Cryptantha clevelandii var. florosa | CNPS-EB: B | Cleveland's cryptantha | |
| Cryptantha torreyana var. pumila | CNPS-EB: B | Torrey's cryptantha | |
| Datisca glomerata | CNPS-EB: C | durango root | |
| Deinandra kelloggii | (formerly Hemizonia k.) | CNPS-EB: A2 | Kellogg's tarweed |
| Delphinium californicum subsp. californicum | CNPS-EB: B | coast larkspur, California larkspur | |
| Delphinium californicum subsp. interius | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G3T3 CNDDB Rank: S3 | Hospital Canyon larkspur | |
| Delphinium parryi subsp. parryi | CNPS-EB: A2 | Parry's larkspur | |
| Dudleya cymosa subsp. paniculata | CNPS-EB: C | spreading dudleya | |
| Elymus multisetus | CNPS-EB: C | big squirreltail | |
| Enemion stipitatum | (formerly Isopyrum s.) | CNPS-EB: A2 | Siskiyou rue-anemone |
| Eriastrum abramsii | CNPS-EB: A2 | Abram's eriastrum | |
| Eriogonum gracile var. gracile | CNPS-EB: C | slender woolly wild buckwheat, slender buckwheat | |
| Erythranthe nasuta | CNPS-EB: A2 | shy monkeyflower | |
| Euphorbia serpillifolia subsp. serpillifolia | CNPS-EB: C | thyme-leaved spurge | |
| Festuca californica | CNPS-EB: C | California fescue | |
| Festuca idahoensis | CNPS-EB: C | Idaho fescue, blue bunchgrass | |
| Forestiera pubescens | CNPS-EB: B | desert olive | |
| Frangula californica subsp. tomentella | (formerly Rhamnus t.) | CNPS-EB: C | hoary coffeeberry |
| Fritillaria agrestis | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | stinkbells | |
| Fritillaria falcata | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | talus fritillary | |
| Gilia tricolor subsp. tricolor | CNPS-EB: C | birds-eye gilia | |
| Githopsis specularioides | CNPS-EB: B | common bluecup | |
| Glycyrrhiza lepidota | CNPS-EB: C | wild licorice | |
| Gruvelia pusilla | (formerly Pectocarya pusilla) | CNPS-EB: B | little pectocarya |
| Helianthus californicus | CNPS-EB: C | California sunflower | |
| Hoita macrostachya | CNPS-EB: B | California hemp | |
| Holozonia filipes | CNPS-EB: A2 | whitecrown, holozonia | |
| Horkelia californica var. frondosa | CNPS-EB: B | leafy horkelia | |
| Juncus mexicanus | CNPS-EB: C | Mexican rush | |
| Juniperus californica | CNPS-EB: C | California juniper | |
| Keckiella breviflora var. breviflora | CNPS-EB: A2 | gaping penstemon | |
| Koeleria macrantha | CNPS-EB: C | june grass | |
| Lasthenia microglossa | CNPS-EB: A2 | small-ray goldfields | |
| Layia platyglossa | CNPS-EB: B | tidy-tips | |
| Leptosiphon ambiguus | (formerly Linanthus a.) | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | serpentine leptosiphon, serpentine linanthus |
| Leptosiphon androsaceus | (formerly Linanthus a.) | CNPS-EB: C | common linanthus, common leptosiphon |
| Leptosiphon parviflorus | (formerly Linanthus p.) | CNPS-EB: B | small-flowered linanthus, small-flowered leptosiphon |
| Lessingia tenuis | CNPS-EB: *A2 State CNPS: 4.3 Global Rank: G4 CNDDB Rank: S4 | spring lessingia | |
| Lithophragma parviflorum var. parviflorum | CNPS-EB: B | prairie star | |
| Lomatium caruifolium var. caruifolium | CNPS-EB: B | caraway-leaved lomatium | |
| Madia exigua | CNPS-EB: C | ||
| Malacothamnus fremontii | CNPS-EB: C | white-coat mallow | |
| Melica californica | CNPS-EB: C | California melic | |
| Mimetanthe pilosa | (formerly Mimulus pilosus) | CNPS-EB: B | downy monkeyflower |
| Montia fontana | CNPS-EB: C | water chickweed, blinks, water chickweed | |
| Myriopteris intertexta | CNPS-EB: B | coastal lip fern | |
| Navarretia pubescens | CNPS-EB: C | downy navarretia | |
| Nemophila parviflora var. parviflora | CNPS-EB: B | small-flowered nemophila | |
| Nemophila pedunculata | CNPS-EB: B | meadow nemophila | |
| Nicotiana quadrivalvis | CNPS-EB: B | indian tobacco | |
| Osmorhiza brachypoda | CNPS-EB: C | California cicely | |
| Packera breweri | (formerly Senecio b.) | CNPS-EB: C | Brewer's ragwort, Brewer's butterweed |
| Penstemon heterophyllus var. heterophyllus | CNPS-EB: B | chaparral penstemon | |
| Pentachaeta exilis subsp. exilis | CNPS-EB: A1 | meager pentachaeta | |
| Perideridia californica | CNPS-EB: C | California yampah | |
| Phacelia breweri | CNPS-EB: C | Brewer's phacelia | |
| Phacelia divaricata | CNPS-EB: B | divaricate phacelia | |
| Phacelia malvifolia var. malvifolia | CNPS-EB: A2 | stinging phacelia | |
| Phacelia rattanii | CNPS-EB: B | Rattan's phacelia | |
| Plagiobothrys acanthocarpus | CNPS-EB: B | adobe popcornflower, adobe allocarya | |
| Plagiobothrys canescens var. canescens | CNPS-EB: C | valley popcornflower | |
| Prunus emarginata | CNPS-EB: C | bitter cherry | |
| Quercus durata var. durata | CNPS-EB: B | leather oak | |
| Ribes aureum var. gracillimum | CNPS-EB: A2 | golden currant | |
| Ribes quercetorum | CNPS-EB: A2 | oakwoods gooseberry, oak gooseberry | |
| Rumex californicus | (formerly R. salicifolius var. dentatus) | CNPS-EB: C | willow dock |
| Sagina decumbens subsp. occidentalis | (S. apetala is more common) | CNPS-EB: B | western pearlwort |
| Scutellaria siphocampyloides | CNPS-EB: A1 | gray-leaved skullcap | |
| Senecio aronicoides | CNPS-EB: C | rayless ragwort, California butterweed | |
| Stebbinsoseris heterocarpa | CNPS-EB: C | grassland silverpuffs, derived microseris | |
| Stellaria nitens | CNPS-EB: C | shining chickweed | |
| Stipa cernua | CNPS-EB: C | nodding needlegrass | |
| Stipa lemmonii var. lemmonii | (formerly Achnatherum lemmonii) | CNPS-EB: A2 | Lemmon needlegrass |
| Streptanthus breweri | CNPS-EB: A1 | Brewer's streptanthus | |
| Streptanthus glandulosus subsp. glandulosus | CNPS-EB: B | jewelflower | |
| Stylocline gnaphaloides | CNPS-EB: B | everlasting neststraw, nest-straw | |
| Tetrapteron graciliflorum | CNPS-EB: C | hill sun cup | |
| Thysanocarpus laciniatus | CNPS-EB: B | lacepod | |
| Tonella tenella | CNPS-EB: B | small-flowered tonella | |
| Toxicoscordion venenosum var. venenosum | (formerly Zigadenus venenosus) | CNPS-EB: A1 | death-camas |
| Trifolium dichotomum | CNPS-EB: C | branched indian clover | |
| Trifolium olivaceum | CNPS-EB: C | olive clover | |
| Tropidocarpum gracile | CNPS-EB: B | slender tropidocarpum | |
| Turritis glabra | CNPS-EB: B | tower mustard | |
| Viola purpurea subsp. quercetorum | CNPS-EB: C | mountain violet | |
| Viola sheltonii | CNPS-EB: A2 | Shelton's violet, fan violet | |
| Wyethia glabra | (W. helenioides is more common | CNPS-EB: C | mule ears |
| Alopecurus saccatus | CNPS-EB: B | Howell's meadow foxtail | |
| Antirrhinum thompsonii | (formerly A. multiflorum) | CNPS-EB: A1 | withered snapdragon |
| Aphyllon tuberosum | CNPS-EB: C | bulbous broom-rape | |
| Aralia californica | CNPS-EB: C | elk clover | |
| Artemisia dracunculus | CNPS-EB: A2 | tarragon | |
| Balsamorhiza macrolepis | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | big-scale balsamroot | |
| Calochortus invenustus | CNPS-EB: A1x | plain mariposa-lily | |
| Chaenactis glabriuscula var. megacephala | CNPS-EB: A1 | yellow pincushion | |
| Clarkia breweri | CNPS-EB: *A1 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | Brewer's clarkia | |
| Claytonia gypsophiloides | CNPS-EB: B | coast range montia | |
| Cornus glabrata | CNPS-EB: A1 | brown dogwood | |
| Crocidium multicaule | CNPS-EB: A1 | spring gold | |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Delphinium gypsophilum | CNPS-EB: A1 | gypsum-loving larkspur | |
| Descurainia pinnata subsp. brachycarpa | CNPS-EB: A1x | tansy mustard | |
| Diplacus bolanderi | (formerly Mimulus b.) | CNPS-EB: A1 | Bolander's monkeyflower |
| Diplacus douglasii | (formerly Mimulus d.) | CNPS-EB: A2 | Douglas monkeyflower |
| Diplacus kelloggii | (formerly Mimulus kelloggii) | CNPS-EB: A1x | Kellogg's monkeyflower |
| Diplacus rattanii | (formerly Mimulus rattanii) | CNPS-EB: A2 | Rattan monkeyflower |
| Ehrendorferia chrysantha | (formerly Dicentra chrysantha) | CNPS-EB: B | golden ear-drops |
| Eleocharis parishii | CNPS-EB: A1 | Dombey's spike-rush | |
| Emmenanthe rosea | (formerly E. penduliflora var. rosea) | CNPS-EB: A1x | |
| Epilobium torreyi | CNPS-EB: A1 | narrow-leaved boisduvalia | |
| Eriastrum pluriflorum subsp. pluriflorum | CNPS-EB: A1 | many-flowered eriastrum | |
| Ericameria nauseosa var. mohavensis | CNPS-EB: A2 | Mojave rabbitbrush, rubber rabbitbrush | |
| Eriogonum luteolum var. luteolum | CNPS-EB: A2 | golden-carpet wild buckwheat, golden carpet | |
| Eriogonum wrightii var. trachygonum | CNPS-EB: C | rough-node bastard-sage, Wright's eriogonum | |
| Eriophyllum jepsonii | CNPS-EB: *A2 State CNPS: 4.3 Global Rank: G3 CNDDB Rank: S3 | Jepson's woolly sunflower | |
| Erythranthe floribunda | (formerly Mimulus floribundus) | CNPS-EB: A1? | floriferous monkeyflower |
| Eschscholzia caespitosa | CNPS-EB: A1 | tufted poppy | |
| Garrya congdonii | CNPS-EB: A1x | Congdon's silk-tassel | |
| Garrya fremontii | CNPS-EB: A1x | silk tassel bush | |
| Gutierrezia californica | CNPS-EB: C | California matchweed | |
| Helianthella californica var. californica | CNPS-EB: A2 | California helianthella | |
| Heterotheca oregona var. scaberrima | CNPS-EB: A1 | Oregon goldenaster | |
| Hoita strobilina | (historical-1865) | CNPS-EB: *A1x State CNPS: 1B.1 Global Rank: G2? CNDDB Rank: S2? | Loma Prieta hoita |
| Hosackia crassifolia var. crassifolia | CNPS-EB: A2 | broad-leaved lotus | |
| Hydrophyllum occidentale | CNPS-EB: A1 | western waterleaf | |
| Isolepis carinata | (formerly Scirpus koilolepis) | CNPS-EB: A1 | dwarf club-rush |
| Layia gaillardioides | CNPS-EB: A2 | woodland layia | |
| Lepidospartum squamatum | (historical-1933) | CNPS-EB: A1x | California broom-shrub |
| Lewisia rediviva var. rediviva | CNPS-EB: A2 | bitterroot | |
| Lupinus pachylobus | CNPS-EB: B | big pod lupine | |
| Mentzelia dispersa | CNPS-EB: A2 | Nada stick-leaf | |
| Mentzelia lindleyi | CNPS-EB: B | Lindley's blazing star | |
| Microseris campestris | CNPS-EB: A1 | San Joaquin microseris | |
| Myriopteris covillei | CNPS-EB: C | Coville's lip fern | |
| Persicaria punctata | (formerly Polygonum punctatum) | CNPS-EB: C | water smartweed |
| Phacelia ciliata | CNPS-EB: B | Great Valley phacelia, Great Valley phacelia | |
| Phacelia egena | (historical-1956) | CNPS-EB: A1x | phacelia |
| Phacelia ramosissima | CNPS-EB: B | branching phacelia | |
| Phacelia tanacetifolia | CNPS-EB: B | tansy phacelia | |
| Pinus coulteri | CNPS-EB: B | Coulter pine | |
| Plagiobothrys fulvus var. campestris | CNPS-EB: B | field popcornflower, fulvous popcornflower | |
| Plagiobothrys tenellus | CNPS-EB: B | Pacific popcornflower, slender popcornflower | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Prunus subcordata | CNPS-EB: C | Pacific plum, Sierra plum | |
| Pseudognaphalium microcephalum | (formerly Gnaphalium canescens | CNPS-EB: A1 | white everlasting |
| Psilocarphus oregonus | CNPS-EB: A2 | Oregon woollyheads, Oregon woolly-marbles | |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| Ribes malvaceum var. malvaceum | CNPS-EB: C | chaparral currant | |
| Salix breweri | CNPS-EB: A1x | Brewer's willow | |
| Scutellaria tuberosa | CNPS-EB: C | Dannie's skullcap | |
| Senecio flaccidus var. douglasii | CNPS-EB: A2 | Douglas' threadleaf ragwort, shrubby butterweed | |
| Stachys bullata | CNPS-EB: A1? | California hedge nettle | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Trifolium oliganthum | CNPS-EB: C | few-flowered clover | |
| Viola douglasii | CNPS-EB: A2 | Douglas' violet, golden violet | |
| Zeltnera davyi | (formerly Centaurium d.) | CNPS-EB: B | Davy's centaury, conchalagua |