| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Acaena californica | (formerly A. pinnatifida var. californica) | CNPS-EB: C | California acaena |
| Acmispon junceus var. junceus | CNPS-EB: A1 | ||
| Amelanchier utahensis | CNPS-EB: C | Utah service-berry | |
| Amsinckia lunaris | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G3 CNDDB Rank: S3 | bent-flowered fiddleneck | |
| Anisocarpus madioides | (formerly Madia m.) | CNPS-EB: B | woodland tarweed, woodland madia |
| Aralia californica | CNPS-EB: C | elk clover | |
| Arbutus menziesii | CNPS-EB: B | Pacific madrone | |
| Arctostaphylos crustacea subsp. crustacea | CNPS-EB: C | brittleleaf manzanita | |
| Arctostaphylos manzanita subsp. manzanita | CNPS-EB: A2 | common manzanita | |
| Arnica discoidea | CNPS-EB: B | rayless arnica | |
| Asclepias eriocarpa | CNPS-EB: A1 | KOTOLO | |
| Asclepias speciosa | (A. californica is more common | CNPS-EB: B | showy milkweed, milkweed |
| Calamagrostis rubescens | CNPS-EB: B | pine reed grass, pine grass | |
| Calochortus umbellatus | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3? CNDDB Rank: S3? | Oakland star-tulip | |
| Carex barbarae | CNPS-EB: C | whiteroot sedge, Santa Barbara sedge, St. Barbara's sedge | |
| Carex densa | CNPS-EB: B | dense sedge | |
| Carex subbracteata | CNPS-EB: B | small-bracted sedge | |
| Chrysolepis chrysophylla var. minor | CNPS-EB: A2 | golden chinquapin | |
| Claytonia exigua subsp. exigua | CNPS-EB: C | common montia | |
| Clematis ligusticifolia | CNPS-EB: C | western virgin's bower, virgin's bower | |
| Collomia heterophylla | CNPS-EB: A1 | variable-leaf collomia | |
| Cordylanthus pilosus subsp. pilosus | CNPS-EB: B | hairy bird's-beak | |
| Cuscuta campestris | CNPS-EB: A1 | field dodder | |
| Cyperus erythrorhizos | CNPS-EB: B | red-rooted cyperus | |
| Delphinium nudicaule | CNPS-EB: C | red larkspur, orange larkspur | |
| Dendromecon rigida | CNPS-EB: A2 | bush poppy | |
| Deschampsia cespitosa subsp. cespitosa | CNPS-EB: C | tufted hairgrass | |
| Deschampsia elongata | CNPS-EB: C | slender hair grass | |
| Dicentra formosa | CNPS-EB: A2 | Pacific bleeding heart, bleeding heart | |
| Dirca occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | western leatherwood | |
| Echinodorus berteroi | CNPS-EB: A2 | burhead | |
| Eryngium jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | ||
| Festuca californica | CNPS-EB: C | California fescue | |
| Festuca idahoensis | CNPS-EB: C | Idaho fescue, blue bunchgrass | |
| Galium triflorum | CNPS-EB: C | sweet-scented bedstraw | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Hieracium albiflorum | CNPS-EB: C | white hawkweed | |
| Juncus phaeocephalus var. unknown | CNPS-EB: A2? | brown-headed rush | |
| Kopsiopsis strobilacea | (formerly Boschniakia strobilacea) | CNPS-EB: A1 | California ground-cone |
| Layia hieracioides | CNPS-EB: C | tall layia | |
| Leptosiphon androsaceus | (formerly Linanthus a.) | CNPS-EB: C | common linanthus, common leptosiphon |
| Lupinus pachylobus | CNPS-EB: B | big pod lupine | |
| Marah oregana | CNPS-EB: B | coast man-root | |
| Meconella oregana | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G2 CNDDB Rank: S2 | Oregon meconella | |
| Morella californica | (formerly Myrica c.) | CNPS-EB: B | wax myrtle |
| Nuttallanthus texanus | CNPS-EB: A2 | blue toadflax | |
| Oxalis pilosa | (formerly O. albicans ssp. p.) | CNPS-EB: B | hairy wood-sorrel |
| Penstemon heterophyllus var. heterophyllus | CNPS-EB: B | chaparral penstemon | |
| Pentachaeta alsinoides | CNPS-EB: C | tiny pentachaeta | |
| Phoradendron leucarpum subsp. macrophyllum | (formerly P. serotinum subsp. macrophyllum, P. macrophyllum) | CNPS-EB: C | big leaf mistletoe |
| Pickeringia montana var. montana | CNPS-EB: C | chaparral pea | |
| Pinus attenuata | CNPS-EB: A1 | knobcone pine | |
| Piperia michaelii | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | Michael's rein-orchid | |
| Piperia transversa | CNPS-EB: B | flat spurred piperia, transverse piperia | |
| Polystichum californicum | CNPS-EB: A1 | California sword fern | |
| Prunus emarginata | CNPS-EB: C | bitter cherry | |
| Quercus garryana var. garryana | CNPS-EB: B | Oregon oak | |
| Quercus parvula var. shrevei | CNPS-EB: A1 | island scrub oak | |
| Quercus wislizeni var. frutescens | CNPS-EB: C | shrubby interior live oak | |
| Ranunculus lobbii | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S3 | Lobb's aquatic buttercup | |
| Rhinotropis californica | (formerly Polygala californica) | CNPS-EB: A1 | California milkwort |
| Rumex salicifolius | (formerly R. salicifolius var. salicifolius) | CNPS-EB: B | willow dock |
| Salix scouleriana | CNPS-EB: A2 | Scouler's willow | |
| Scutellaria californica | CNPS-EB: B | California skullcap | |
| Scutellaria tuberosa | CNPS-EB: C | Dannie's skullcap | |
| Sequoia sempervirens | CNPS-EB: C | coast redwood | |
| Silene laciniata subsp. californica | (formerly Silene c.) | CNPS-EB: C | Indian pink, California pink, California Indian pink |
| Stebbinsoseris heterocarpa | CNPS-EB: C | grassland silverpuffs, derived microseris | |
| Stipa lepida | CNPS-EB: C | foothill needlegrass | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Tropidocarpum gracile | CNPS-EB: B | slender tropidocarpum | |
| Vaccinium ovatum | CNPS-EB: C | California huckleberry | |
| Acmispon denticulatus | (historical-1945) | CNPS-EB: A1x | meadow trefoil |
| Acmispon junceus var. biolettii | (historical-1945) | CNPS-EB: A1x | rush lotus |
| Apocynum androsaemifolium | CNPS-EB: A2 | bitter dogbane, dogbane | |
| Arctostaphylos glandulosa subsp. glandulosa | CNPS-EB: B | Eastwood manzanita | |
| Arctostaphylos glandulosa subsp. mollis | CNPS-EB: A1x | ||
| Arctostaphylos pallida | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FT CESA Status: CE | pallid manzanita | |
| Asarum caudatum | CNPS-EB: B | wild-ginger | |
| Bolboschoenus maritimus subsp. paludosus | (formerly Scirpus m.) | CNPS-EB: C | bulrush |
| Calamagrostis koelerioides | 2 questionable ID sites. Needs field research | CNPS-EB: A1? | tufted pine grass |
| California macrophylla | (formerly Erodium macrophyllum | CNPS-EB: B | round-leaved filaree |
| Calochortus pulchellus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo fairy-lantern | |
| Calycadenia multiglandulosa | CNPS-EB: A2 | sticky calycadenia | |
| Castilleja subinclusa subsp. franciscana | CNPS-EB: A1 | Franciscan indian paintbrush | |
| Castilleja wightii | CNPS-EB: B | Wight's indian paintbrush | |
| Cicuta douglasii | CNPS-EB: A2 | water-hemlock | |
| Cirsium brevistylum | CNPS-EB: B | indian thistle | |
| Claytonia gypsophiloides | CNPS-EB: B | coast range montia | |
| Collinsia sparsiflora var. unknown | CNPS-EB: C? | few-flowered blue-eyed Mary | |
| Cornus sericea subsp. sericea | CNPS-EB: C | American dogwood | |
| Crocanthemum scoparium var. vulgare | (formerly Helianthemum scoparium var. vulgare) | CNPS-EB: B | peak rush-rose |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Deinandra corymbosa | (formerly Hemizonia corymbosa) | CNPS-EB: A2 | coast tarweed |
| Deschampsia cespitosa subsp. holciformis | CNPS-EB: B | tufted hairgrass | |
| Diplacus douglasii | (formerly Mimulus d.) | CNPS-EB: A2 | Douglas monkeyflower |
| Eleocharis acicularis var. acicularis | CNPS-EB: B | needle spike-rush | |
| Erigeron philadelphicus var. philadelphicus | CNPS-EB: C | fleabane | |
| Festuca octoflora | CNPS-EB: A2 | sixweeks grass, slender fescue | |
| Galium trifidum subsp. columbianum | CNPS-EB: A1 | trifid bedstraw | |
| Githopsis specularioides | CNPS-EB: B | common bluecup | |
| Heterotheca sessiliflora subsp. bolanderi | (H. s. ssp. echioides is more | CNPS-EB: C | Bolander goldenaster |
| Juncus phaeocephalus var. phaeocephalus | CNPS-EB: B | brownheaded rush | |
| Koeleria macrantha | CNPS-EB: C | june grass | |
| Lasthenia glabrata subsp. glabrata | CNPS-EB: A2 | yellow-ray goldfields | |
| Layia gaillardioides | CNPS-EB: A2 | woodland layia | |
| Lepidium latipes | CNPS-EB: B | dwarf peppergrass | |
| Lilium pardalinum subsp. pardalinum | CNPS-EB: A1 | leopard lily | |
| Lythrum californicum | CNPS-EB: B | California loosestrife | |
| Malacothrix floccifera | CNPS-EB: C | woolly malacothrix | |
| Microseris bigelovii | (historical-1891) | CNPS-EB: A1x | coast microseris |
| Monardella douglasii | CNPS-EB: A2 | fenestra monardella, Fenestra monardella | |
| Monolopia major | CNPS-EB: B | cupped monolopia | |
| Montia linearis | (historical-1933) | CNPS-EB: A1x | linear-leaved montia |
| Nicotiana quadrivalvis | CNPS-EB: B | indian tobacco | |
| Piperia elegans subsp. elegans | CNPS-EB: C | coast piperia, elegant piperia | |
| Poa howellii | CNPS-EB: A2 | Howell's bluegrass | |
| Populus trichocarpa | (formerly P. balsamifera var. | CNPS-EB: C | black cottonwood |
| Prunus ilicifolia subsp. ilicifolia | CNPS-EB: B | islay, holly-leafed cherry | |
| Prunus subcordata | CNPS-EB: C | Pacific plum, Sierra plum | |
| Quercus berberidifolia | CNPS-EB: C | scrub oak | |
| Quercus xchasei | CNPS-EB: B | Chase oak | |
| Rhamnus crocea | CNPS-EB: C | spiny redberry | |
| Rosa spithamea | CNPS-EB: C | coast ground rose, ground rose | |
| Sabulina californica | (formerly Minuartia californica) | CNPS-EB: A1 | California sandwort |
| Sagittaria latifolia | CNPS-EB: A1 | arrowhead | |
| Sanicula laciniata | CNPS-EB: A2 | coast sanicle | |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Stephanomeria elata | CNPS-EB: A1 | stephanomeria | |
| Streptanthus glandulosus subsp. glandulosus | CNPS-EB: B | jewelflower | |
| Tellima grandiflora | CNPS-EB: C | fringe cups | |
| Trifolium fucatum | CNPS-EB: B | bull clover | |
| Trillium ovatum subsp. ovatum | CNPS-EB: A2 | white trillium | |
| Triodanis biflora | CNPS-EB: A2 | Venus' looking-glass |