| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Acaena californica | (formerly A. pinnatifida var. californica) | CNPS-EB: C | California acaena |
| Agrostis hallii | CNPS-EB: A2 | Hall's bent grass | |
| Alnus rubra | (A. rhombifolia is more common | CNPS-EB: A2 | red alder |
| Apocynum androsaemifolium | CNPS-EB: A2 | bitter dogbane, dogbane | |
| Berberis nervosa | (B. pinnata is more common) | CNPS-EB: A1 | Oregon grape |
| Berula erecta | CNPS-EB: C | cutleaf water-parsnip | |
| Calochortus umbellatus | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3? CNDDB Rank: S3? | Oakland star-tulip | |
| Carex harfordii | CNPS-EB: B | Harford's sedge, Monterey sedge | |
| Carex laeviculmis | CNPS-EB: A1 | smooth-stemmed sedge | |
| Carex lenticularis var. lipocarpa | CNPS-EB: A1 | few-ribbed sedge | |
| Carex subbracteata | CNPS-EB: B | small-bracted sedge | |
| Carex unilateralis | CNPS-EB: A1 | one-sided sedge | |
| Castilleja exserta subsp. latifolia | CNPS-EB: A1 | owl's-clover | |
| Ceanothus thyrsiflorus var. thyrsiflorus | CNPS-EB: B | blue blossom, California lilac | |
| Cirsium cymosum var. cymosum | CNPS-EB: C | peregrine thistle | |
| Cirsium quercetorum | CNPS-EB: A2 | brownie thistle | |
| Cornus sericea subsp. occidentalis | CNPS-EB: C | western dogwood | |
| Cornus sericea subsp. sericea | CNPS-EB: C | American dogwood | |
| Cyperus erythrorhizos | CNPS-EB: B | red-rooted cyperus | |
| Delphinium hesperium subsp. hesperium | CNPS-EB: B | western larkspur | |
| 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 | |
| Elymus multisetus | CNPS-EB: C | big squirreltail | |
| Erigeron petrophilus var. petrophilus | CNPS-EB: B | rock daisy | |
| Euonymus occidentalis var. occidentalis | CNPS-EB: A1 | burning bush | |
| Festuca californica | CNPS-EB: C | California fescue | |
| Festuca idahoensis | CNPS-EB: C | Idaho fescue, blue bunchgrass | |
| Festuca rubra | CNPS-EB: C | red fescue | |
| Galium triflorum | CNPS-EB: C | sweet-scented bedstraw | |
| Garrya elliptica | CNPS-EB: B | silk tassel bush | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Heterotheca sessiliflora subsp. bolanderi | (H. s. ssp. echioides is more | CNPS-EB: C | Bolander goldenaster |
| Horkelia californica var. frondosa | CNPS-EB: B | leafy horkelia | |
| Iris longipetala | CNPS-EB: *A1 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | coast iris | |
| Lasthenia glabrata subsp. glabrata | CNPS-EB: A2 | yellow-ray goldfields | |
| Layia hieracioides | CNPS-EB: C | tall layia | |
| Layia platyglossa | CNPS-EB: B | tidy-tips | |
| Marah oregana | CNPS-EB: B | coast man-root | |
| Melica californica | CNPS-EB: C | California melic | |
| Moehringia macrophylla | CNPS-EB: A2 | large-leaved sandwort, big-leaf sandwort | |
| Morella californica | (formerly Myrica c.) | CNPS-EB: B | wax myrtle |
| Oenothera elata subsp. hookeri | CNPS-EB: C | evening-primrose | |
| Piperia elegans subsp. elegans | CNPS-EB: C | coast piperia, elegant piperia | |
| Piperia elongata | CNPS-EB: C | chaparral orchid, wood rein-orchid, elongate piperia | |
| Prunella vulgaris var. lanceolata | (var. vulgaris is more common) | CNPS-EB: B | selfheal |
| Prunus emarginata | CNPS-EB: C | bitter cherry | |
| Quercus garryana var. garryana | CNPS-EB: B | Oregon oak | |
| Quercus wislizeni var. frutescens | CNPS-EB: C | shrubby interior live oak | |
| Rhamnus crocea | CNPS-EB: C | spiny redberry | |
| Rhus aromatica | (formerly R. trilobata) | CNPS-EB: C | skunk bush, skunkbrush, squawbush |
| Ribes divaricatum var. pubiflorum | CNPS-EB: C | straggle bush, straggly gooseberry | |
| Rumex occidentalis | CNPS-EB: A2 | western dock | |
| Rumex transitorius | CNPS-EB: B | willow dock | |
| Salix scouleriana | CNPS-EB: A2 | Scouler's willow | |
| Sambucus racemosa var. racemosa | CNPS-EB: B | red elderberry | |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Scutellaria californica | CNPS-EB: B | California skullcap | |
| Sedum spathulifolium | CNPS-EB: B | broadleaf stonecrop, Pacific stonecrop | |
| Senecio aronicoides | CNPS-EB: C | rayless ragwort, California butterweed | |
| Stipa cernua | CNPS-EB: C | nodding needlegrass | |
| Stipa lepida | CNPS-EB: C | foothill needlegrass | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Tellima grandiflora | CNPS-EB: C | fringe cups | |
| Triglochin maritima | CNPS-EB: C | common arrow-grass, seaside arrow-grass | |
| Turritis glabra | CNPS-EB: B | tower mustard | |
| Vaccinium ovatum | CNPS-EB: C | California huckleberry | |
| Amelanchier utahensis | CNPS-EB: C | Utah service-berry | |
| Arctostaphylos crustacea subsp. crustacea | CNPS-EB: C | brittleleaf manzanita | |
| Arctostaphylos pallida | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FT CESA Status: CE | pallid manzanita | |
| Arnica discoidea | CNPS-EB: B | rayless arnica | |
| Asarum caudatum | CNPS-EB: B | wild-ginger | |
| Calochortus splendens | CNPS-EB: A2 | splendid mariposa-lily | |
| Carex barbarae | CNPS-EB: C | whiteroot sedge, Santa Barbara sedge, St. Barbara's sedge | |
| Carex obnupta | CNPS-EB: B | slough sedge | |
| Danthonia californica | CNPS-EB: C | California oat grass | |
| Dudleya farinosa | CNPS-EB: A2 | bluff lettuce, powdery dudleya | |
| Elymus trachycaulus subsp. trachycaulus | CNPS-EB: A1 | slender wheat grass | |
| Epilobium ciliatum subsp. watsonii | (ssp. ciliatum is more common) | CNPS-EB: A1 | San Francisco willowherb |
| Equisetum laevigatum | CNPS-EB: A2 | smooth scouring rush | |
| Eriogonum fasciculatum var. foliolosum | CNPS-EB: A1 | leafy California buckwheat, California buckwheat | |
| Fritillaria liliacea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | fragrant fritillary | |
| Helianthus californicus | CNPS-EB: C | California sunflower | |
| Heterotheca sessiliflora var. bolanderioides | CNPS-EB: A1x | golden aster | |
| Iris douglasiana | CNPS-EB: B | Douglas iris | |
| Lepidium dictyotum | CNPS-EB: B | alkali pepper-grass | |
| Lepidium oxycarpum | CNPS-EB: A2 | sharp-podded pepper-grass | |
| Leptosiphon grandiflorus | (formerly Linanthus g.) | CNPS-EB: *A1x State CNPS: 4.2 Global Rank: G3G4 CNDDB Rank: S3S4 | large-flowered leptosiphon, large-flowered linanthus |
| Lupinus arboreus | CNPS-EB: A2 | yellow bush lupine | |
| Lupinus littoralis var. variicolor | (formerly L. variicolor) | CNPS-EB: A1? | bluff lupine |
| Melica bulbosa | CNPS-EB: A1 | onion grass | |
| Micropus amphibolus | (historical - 1955) | CNPS-EB: *A1x State CNPS: 3.2 Global Rank: G3G4 CNDDB Rank: S3S4 | Mount Diablo cottonseed, Mt. Diablo cottonweed |
| Navarretia mellita | CNPS-EB: C | honey-scented navarretia | |
| Penstemon heterophyllus var. heterophyllus | CNPS-EB: B | chaparral penstemon | |
| Phacelia ramosissima | CNPS-EB: B | branching phacelia | |
| Pseudognaphalium beneolens | (formerly Gnaphalium canescens | CNPS-EB: C | fragrant everlasting |
| Rubus spectabilis | CNPS-EB: A1x | salmonberry | |
| Sisyrinchium californicum | CNPS-EB: A1 | golden-eyed-grass | |
| Symphyotrichum lanceolatum var. hesperium | (formerly Aster lanceolatus ss | CNPS-EB: A2 | marsh aster |
| Tetrapteron graciliflorum | CNPS-EB: C | hill sun cup |