| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Acanthomintha lanceolata | CNPS-EB: *A2 State CNPS: 4.2 | Santa Clara thornmint | |
| Allium amplectens | CNPS-EB: A2 | narrow-leaved onion | |
| Allium bolanderi var. bolanderi | CNPS-EB: A2 | Bolander's onion | |
| Aquilegia eximia | (A. formosa is more common) | CNPS-EB: A2 | Van Houtte's columbine |
| Berberis aquifolium var. dictyota | CNPS-EB: A1 | Jepson's mahonia | |
| Castilleja applegatei subsp. martinii | CNPS-EB: A2 | wavy-leaved indian paintbrush | |
| Castilleja subinclusa subsp. subinclusa | CNPS-EB: A1 | long-leaved indian paintbrush | |
| Cirsium fontinale var. campylon | CNPS-EB: *A2 State CNPS: 1B.2 | Mount Hamilton fountain thistle | |
| Cordylanthus rigidus subsp. rigidus | CNPS-EB: A2 | stiffly-branched bird's-beak | |
| Delphinium californicum subsp. interius | CNPS-EB: *A2 State CNPS: 1B.2 | Hospital Canyon larkspur | |
| Delphinium parryi subsp. parryi | CNPS-EB: A2 | Parry's larkspur | |
| Enemion stipitatum | (formerly Isopyrum s.) | CNPS-EB: A2 | Siskiyou rue-anemone |
| Eriastrum abramsii | CNPS-EB: A2 | Abram's eriastrum | |
| Fritillaria agrestis | CNPS-EB: *A2 State CNPS: 4.2 | stinkbells | |
| Fritillaria falcata | CNPS-EB: *A1 State CNPS: 1B.2 | talus fritillary | |
| Leptosiphon ambiguus | (formerly Linanthus a.) | CNPS-EB: *A2 State CNPS: 4.2 | serpentine leptosiphon, serpentine linanthus |
| Leptosiphon parviflorus | (formerly Linanthus p.) | CNPS-EB: A2 | small-flowered linanthus, small-flowered leptosiphon |
| Lessingia tenuis | CNPS-EB: *A2 State CNPS: 4.3 | spring lessingia | |
| Pentachaeta exilis subsp. exilis | CNPS-EB: A1 | meager pentachaeta | |
| Phacelia malvifolia var. malvifolia | CNPS-EB: A2 | stinging phacelia | |
| Ribes aureum var. gracillimum | CNPS-EB: A2 | golden currant | |
| Scutellaria siphocampyloides | CNPS-EB: A2 | gray-leaved skullcap | |
| Streptanthus breweri | CNPS-EB: A1 | Brewer's streptanthus | |
| Toxicoscordion venenosum var. venenosum | (formerly Zigadenus venenosus) | CNPS-EB: A1 | death-camas |
| Viola sheltonii | CNPS-EB: A2 | Shelton's violet, fan violet | |
| Antirrhinum thompsonii | (formerly A. multiflorum) | CNPS-EB: A1 | withered snapdragon |
| Artemisia dracunculus | CNPS-EB: A2 | tarragon | |
| Balsamorhiza macrolepis | CNPS-EB: *A1 State CNPS: 1B.2 | 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 | Brewer's clarkia | |
| Cornus glabrata | CNPS-EB: A2 | brown dogwood | |
| Crocidium multicaule | CNPS-EB: A1 | spring gold | |
| Cryptantha clevelandii var. florosa | CNPS-EB: A2 | Cleveland's cryptantha | |
| 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 kelloggii | (formerly Mimulus kelloggii) | CNPS-EB: A1x | Kellogg's monkeyflower |
| Diplacus rattanii | (formerly Mimulus rattanii) | CNPS-EB: A2 | Rattan monkeyflower |
| Eleocharis parishii | CNPS-EB: A1 | Dombey's spike-rush | |
| Epilobium torreyi | CNPS-EB: A2 | narrow-leaved boisduvalia | |
| Eriastrum pluriflorum subsp. pluriflorum | CNPS-EB: A1 | many-flowered eriastrum | |
| Eriophyllum jepsonii | CNPS-EB: *A2 State CNPS: 4.3 | 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 | |
| Heterotheca oregona var. scaberrima | CNPS-EB: A1 | Oregon goldenaster | |
| Hordeum brachyantherum subsp. californicum | (ssp. brachyantherum is more common | CNPS-EB: A1 | California barley |
| 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 |
| Lepidospartum squamatum | (historical-1933) | CNPS-EB: A1x | California broom-shrub |
| Lewisia rediviva var. rediviva | CNPS-EB: A2 | bitterroot | |
| Mentzelia dispersa | CNPS-EB: A2 | Nada stick-leaf | |
| Microseris campestris | CNPS-EB: A2 | San Joaquin microseris | |
| Phacelia egena | (historical-1956) | CNPS-EB: A1x | phacelia |
| Phacelia ramosissima | CNPS-EB: A2 | branching phacelia | |
| Pseudognaphalium microcephalum | (formerly Gnaphalium canescens | CNPS-EB: A2 | white everlasting |
| Salix breweri | CNPS-EB: A1x | Brewer's willow | |
| Stachys bullata | CNPS-EB: A1? | California hedge nettle | |
| Viola douglasii | CNPS-EB: A2 | Douglas' violet, golden violet | |
| Agoseris heterophylla var. cryptopleura | CNPS-EB: C | ||
| 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 |
| Amelanchier utahensis | CNPS-EB: C | Utah service-berry | |
| Anemopsis californica | CNPS-EB: B-PV | yerba mansa, lizard tail | |
| Apocynum cannabinum | CNPS-EB: B-PV | dogbane, Indian-hemp | |
| Calystegia malacophylla subsp. pedicellata | CNPS-EB: B | woolly morning-glory | |
| Camissonia contorta | CNPS-EB: B-PV | contorted primrose | |
| Carex nudata | CNPS-EB: C | torrent sedge | |
| Carex praegracilis | CNPS-EB: B | black creeper sedge, freeway sedge, deer-bed sedge | |
| Ceanothus leucodermis | CNPS-EB: B | chaparral whitethorn | |
| Cirsium cymosum var. cymosum | CNPS-EB: B-PV | peregrine thistle | |
| Clarkia gracilis subsp. gracilis | CNPS-EB: C | summer's darling | |
| Clarkia modesta | CNPS-EB: B-PV | modest clarkia | |
| Clematis ligusticifolia | CNPS-EB: C | western virgin's bower, virgin's bower | |
| Collinsia parviflora | CNPS-EB: B | blue-eyed Mary | |
| Cryptantha torreyana var. pumila | CNPS-EB: B | Torrey's cryptantha | |
| Deinandra kelloggii | (formerly Hemizonia k.) | CNPS-EB: B | Kellogg's tarweed |
| Delphinium californicum subsp. californicum | CNPS-EB: B | coast larkspur, California larkspur | |
| Dudleya cymosa subsp. paniculata | CNPS-EB: B-PV | spreading dudleya | |
| Elymus multisetus | CNPS-EB: B-PV | big squirreltail | |
| Erigeron petrophilus var. petrophilus | CNPS-EB: B | rock daisy | |
| Erythranthe cardinalis | (formerly Mimulus c.) | CNPS-EB: B-PV | scarlet monkeyflower |
| Erythranthe nasuta | CNPS-EB: C | shy monkeyflower | |
| Euphorbia serpillifolia subsp. serpillifolia | CNPS-EB: C | thyme-leaved spurge | |
| Festuca californica | CNPS-EB: B-PV | California fescue | |
| Festuca idahoensis | CNPS-EB: B-PV | Idaho fescue, blue bunchgrass | |
| Forestiera pubescens | CNPS-EB: B-PV | desert olive | |
| Frangula californica subsp. tomentella | (formerly Rhamnus t.) | CNPS-EB: C | hoary coffeeberry |
| Gilia tricolor subsp. diffusa | CNPS-EB: C | birds-eye gilia | |
| Gilia tricolor subsp. unknown | CNPS-EB: B? | birds-eye gilia | |
| Githopsis specularioides | CNPS-EB: B-PV | common bluecup | |
| Gruvelia pusilla | (formerly Pectocarya pusilla) | CNPS-EB: C | little pectocarya |
| Helianthus californicus | CNPS-EB: C | California sunflower | |
| Hoita macrostachya | CNPS-EB: C | California hemp | |
| Holozonia filipes | CNPS-EB: B | whitecrown, holozonia | |
| Juncus mexicanus | CNPS-EB: C | Mexican rush | |
| Keckiella breviflora var. breviflora | CNPS-EB: B-PV | gaping penstemon | |
| Koeleria macrantha | CNPS-EB: B-PV | june grass | |
| Lasthenia microglossa | CNPS-EB: B | small-ray goldfields | |
| Layia platyglossa | CNPS-EB: B-PV | tidy-tips | |
| Lithophragma parviflorum var. parviflorum | CNPS-EB: B-PV | prairie star | |
| Lomatium caruifolium var. caruifolium | CNPS-EB: B-PV | caraway-leaved lomatium | |
| Malacothamnus fremontii var. fremontii | CNPS-EB: B-PV | white-coat mallow | |
| Melica californica | CNPS-EB: B-PV | California melic | |
| Mimetanthe pilosa | (formerly Mimulus pilosus) | CNPS-EB: B | downy monkeyflower |
| Montia fontana | CNPS-EB: B-PV | water chickweed, blinks, water chickweed | |
| Myriopteris intertexta | CNPS-EB: B-PV | coastal lip fern | |
| Nemophila parviflora var. parviflora | CNPS-EB: B | small-flowered nemophila | |
| Nemophila pedunculata | CNPS-EB: B | meadow nemophila | |
| Nicotiana quadrivalvis | CNPS-EB: B | indian tobacco | |
| Packera breweri | (formerly Senecio b.) | CNPS-EB: B-PV | Brewer's ragwort, Brewer's butterweed |
| Penstemon heterophyllus var. heterophyllus | CNPS-EB: B-PV | chaparral penstemon | |
| Perideridia californica | CNPS-EB: B-PV | California yampah | |
| Phacelia breweri | CNPS-EB: B-PV | Brewer's phacelia | |
| Phacelia divaricata | CNPS-EB: B-PV | divaricate phacelia | |
| Phacelia rattanii | CNPS-EB: B | Rattan's phacelia | |
| Plagiobothrys acanthocarpus | CNPS-EB: B-PV | adobe popcornflower, adobe allocarya | |
| Plagiobothrys canescens var. canescens | CNPS-EB: C | valley popcornflower | |
| Prunus emarginata | CNPS-EB: C | bitter cherry | |
| Prunus subcordata | CNPS-EB: C | Pacific plum, Sierra plum | |
| Psilocarphus oregonus | CNPS-EB: B | Oregon woollyheads, Oregon woolly-marbles | |
| Quercus berberidifolia | CNPS-EB: B | scrub oak | |
| Quercus durata var. durata | CNPS-EB: B | leather oak | |
| Ribes quercetorum | CNPS-EB: B | oakwoods gooseberry, oak gooseberry | |
| Rumex californicus | (formerly R. salicifolius var. dentatus) | CNPS-EB: B-PV | willow dock |
| Sagina decumbens subsp. occidentalis | (S. apetala is more common) | CNPS-EB: B | western pearlwort |
| Senecio aronicoides | CNPS-EB: B-PV | rayless ragwort, California butterweed | |
| Stellaria nitens | CNPS-EB: B-PV | shining chickweed | |
| Stipa cernua | CNPS-EB: B-PV | nodding needlegrass | |
| Stipa lemmonii var. lemmonii | (formerly Achnatherum lemmonii) | CNPS-EB: B | Lemmon needlegrass |
| Streptanthus glandulosus subsp. glandulosus | CNPS-EB: B-PV | jewelflower | |
| Stylocline gnaphaloides | CNPS-EB: B | everlasting neststraw, nest-straw | |
| Tetrapteron graciliflorum | CNPS-EB: B-PV | hill sun cup | |
| Thysanocarpus laciniatus | CNPS-EB: C | lacepod | |
| Tonella tenella | CNPS-EB: B-PV | small-flowered tonella | |
| Trifolium columbinum | CNPS-EB: C | olive clover | |
| Tropidocarpum gracile | CNPS-EB: B-PV | slender tropidocarpum | |
| Turritis glabra | CNPS-EB: B | tower mustard | |
| Viola purpurea subsp. quercetorum | CNPS-EB: C | mountain violet | |
| Agoseris retrorsa | CNPS-EB: B-PV | spear-leaved agoseris | |
| Alopecurus saccatus | CNPS-EB: B | Howell's meadow foxtail | |
| Aphyllon tuberosum | CNPS-EB: B-PV | bulbous broom-rape | |
| Aralia californica | CNPS-EB: B-PV | elk clover | |
| Claytonia gypsophiloides | CNPS-EB: B-PV | coast range montia | |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Diplacus douglasii | (formerly Mimulus d.) | CNPS-EB: B | Douglas monkeyflower |
| Ehrendorferia chrysantha | (formerly Dicentra chrysantha) | CNPS-EB: B | golden ear-drops |
| Ericameria nauseosa var. mohavensis | CNPS-EB: B-PV | Mojave rabbitbrush, rubber rabbitbrush | |
| Eriogonum luteolum var. luteolum | CNPS-EB: C | golden-carpet wild buckwheat, golden carpet | |
| Eriogonum wrightii var. trachygonum | CNPS-EB: C | rough-node bastard-sage, Wright's eriogonum | |
| Gutierrezia californica | CNPS-EB: B-PV | California matchweed | |
| Helianthella californica var. californica | CNPS-EB: B | California helianthella | |
| Horkelia californica var. frondosa | CNPS-EB: B-PV | leafy horkelia | |
| Layia gaillardioides | CNPS-EB: B-PV | woodland layia | |
| Lupinus pachylobus | CNPS-EB: B | big pod lupine | |
| Mentzelia lindleyi | CNPS-EB: B-PV | Lindley's blazing star | |
| Myriopteris covillei | CNPS-EB: B-PV | 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 tanacetifolia | CNPS-EB: B | tansy phacelia | |
| Pinus coulteri | CNPS-EB: B-PV | Coulter pine | |
| Plagiobothrys fulvus var. campestris | CNPS-EB: B | field popcornflower, fulvous popcornflower | |
| Plagiobothrys tenellus | CNPS-EB: C | Pacific popcornflower, slender popcornflower | |
| Platanus racemosa | CNPS-EB: B-PV | western sycamore, California sycamore | |
| Quercus lobata | CNPS-EB: B-PV | valley oak, roble | |
| Senecio flaccidus var. douglasii | CNPS-EB: B-PV | Douglas' threadleaf ragwort, shrubby butterweed | |
| Stipa pulchra | CNPS-EB: B-PV | purple needlegrass | |
| Zeltnera davyi | (formerly Centaurium d.) | CNPS-EB: B-PV | Davy's centaury, conchalagua |