| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Acaena californica | (formerly A. pinnatifida var. californica) | CNPS-EB: C | California acaena |
| Agoseris heterophylla var. heterophylla | CNPS-EB: C | ||
| 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 | |
| Arbutus menziesii | CNPS-EB: B | Pacific madrone | |
| 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 | |
| Camissoniopsis micrantha | CNPS-EB: C | small primrose | |
| Carex barbarae | CNPS-EB: C | whiteroot sedge, Santa Barbara sedge, St. Barbara's sedge | |
| Carex densa | CNPS-EB: B | dense sedge | |
| Carex praegracilis | CNPS-EB: C | black creeper sedge, freeway sedge, deer-bed sedge | |
| Cirsium brevistylum | CNPS-EB: B | indian thistle | |
| Cirsium quercetorum | CNPS-EB: A2 | brownie thistle | |
| Cordylanthus pilosus subsp. pilosus | CNPS-EB: B | hairy bird's-beak | |
| Cornus sericea subsp. sericea | CNPS-EB: C | American dogwood | |
| Cryptantha torreyana var. pumila | CNPS-EB: B | Torrey's cryptantha | |
| Dirca occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | western leatherwood | |
| Elymus multisetus | CNPS-EB: C | big squirreltail | |
| Elymus xhansenii | CNPS-EB: B | Hansen squirreltail | |
| Festuca californica | CNPS-EB: C | California fescue | |
| Festuca elmeri | CNPS-EB: A1 | Elmer's fescue | |
| Festuca idahoensis | CNPS-EB: C | Idaho fescue, blue bunchgrass | |
| Festuca rubra | CNPS-EB: C | red fescue | |
| Garrya elliptica | CNPS-EB: B | silk tassel bush | |
| Githopsis specularioides | CNPS-EB: B | common bluecup | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Hemizonia congesta subsp. lutescens | CNPS-EB: B | hayfield tarweed | |
| Heterotheca sessiliflora subsp. bolanderi | (H. s. ssp. echioides is more | CNPS-EB: C | Bolander goldenaster |
| Hieracium albiflorum | CNPS-EB: C | white hawkweed | |
| Iris douglasiana | CNPS-EB: B | Douglas iris | |
| Isolepis cernua | (formerly Scirpus cernuus) | CNPS-EB: C | low club-rush |
| Juncus phaeocephalus var. phaeocephalus | CNPS-EB: B | brownheaded rush | |
| Koeleria macrantha | CNPS-EB: C | june grass | |
| Layia gaillardioides | CNPS-EB: A2 | woodland layia | |
| Layia hieracioides | CNPS-EB: C | tall layia | |
| Layia platyglossa | CNPS-EB: B | tidy-tips | |
| Ligusticum apiifolium | CNPS-EB: A2 | Pacific lovage | |
| Lupinus affinis | CNPS-EB: A1 | lupine | |
| Madia exigua | CNPS-EB: C | ||
| Marah oregana | CNPS-EB: C | coast man-root | |
| Melica californica | CNPS-EB: C | California melic | |
| Navarretia mellita | CNPS-EB: C | honey-scented navarretia | |
| Piperia elegans subsp. elegans | CNPS-EB: C | coast piperia, elegant piperia | |
| Pseudognaphalium beneolens | (formerly Gnaphalium canescens | CNPS-EB: C | fragrant everlasting |
| Quercus garryana var. garryana | CNPS-EB: B | Oregon oak | |
| Rosa spithamea | CNPS-EB: C | coast ground rose, ground rose | |
| Sanicula laciniata | CNPS-EB: A2 | coast sanicle | |
| Scutellaria californica | CNPS-EB: B | California skullcap | |
| Sisyrinchium californicum | CNPS-EB: A1 | golden-eyed-grass | |
| Stipa cernua | CNPS-EB: C | nodding needlegrass | |
| Stipa lepida | CNPS-EB: C | foothill needlegrass | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Tetrapteron graciliflorum | CNPS-EB: C | hill sun cup | |
| Turritis glabra | CNPS-EB: B | tower mustard | |
| Wyethia glabra | (W. helenioides is more common | CNPS-EB: C | mule ears |
| Adiantum aleuticum | (A. jordanii is more common) | CNPS-EB: A1 | five-finger fern |
| Androsace elongata subsp. acuta | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5?T3T4 CNDDB Rank: S3S4 | California androsace | |
| Arnica discoidea | CNPS-EB: B | rayless arnica | |
| Delphinium hesperium subsp. hesperium | CNPS-EB: B | western larkspur | |
| Deschampsia elongata | CNPS-EB: C | slender hair grass | |
| Erigeron philadelphicus var. philadelphicus | CNPS-EB: C | fleabane | |
| Microseris douglasii subsp. tenella | (subsp douglasii is more common) | CNPS-EB: A2 | silver puffs |
| Navarretia pubescens | CNPS-EB: C | downy navarretia | |
| Papaver californicum | CNPS-EB: B | fire poppy | |
| Prunus subcordata | CNPS-EB: C | Pacific plum, Sierra plum | |
| Rhamnus crocea | CNPS-EB: C | spiny redberry | |
| Ribes divaricatum var. pubiflorum | CNPS-EB: C | straggle bush, straggly gooseberry | |
| Senecio aronicoides | CNPS-EB: C | rayless ragwort, California butterweed | |
| Streptanthus glandulosus subsp. glandulosus | CNPS-EB: B | jewelflower | |
| Symphyotrichum subulatum var. parviflorum | (formerly Aster subulatus var. | CNPS-EB: B | slim aster |
| Trifolium fucatum | CNPS-EB: C | bull clover |