| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Arctostaphylos manzanita subsp. manzanita | CNPS-EB: A2 | common manzanita | |
| Deschampsia elongata | CNPS-EB: C | slender hair grass | |
| Dirca occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | western leatherwood | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Juncus phaeocephalus var. unknown | CNPS-EB: A2? | brown-headed rush | |
| Penstemon heterophyllus var. heterophyllus | CNPS-EB: B | chaparral penstemon | |
| Polystichum californicum | CNPS-EB: A1 | California sword fern | |
| Sequoia sempervirens | CNPS-EB: C | coast redwood | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| 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 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 |
| California macrophylla | (formerly Erodium macrophyllum | CNPS-EB: B | round-leaved filaree |
| Collinsia sparsiflora var. unknown | CNPS-EB: C? | few-flowered blue-eyed Mary | |
| Cordylanthus pilosus subsp. pilosus | CNPS-EB: B | hairy bird's-beak | |
| Deinandra corymbosa | (formerly Hemizonia corymbosa) | CNPS-EB: A2 | coast tarweed |
| Dendromecon rigida | CNPS-EB: A2 | bush poppy | |
| Eleocharis acicularis var. acicularis | CNPS-EB: B | needle spike-rush | |
| Heterotheca sessiliflora subsp. bolanderi | (H. s. ssp. echioides is more | CNPS-EB: C | Bolander goldenaster |
| Lasthenia glabrata subsp. glabrata | CNPS-EB: A2 | yellow-ray goldfields | |
| Layia gaillardioides | CNPS-EB: A2 | woodland layia | |
| Layia hieracioides | CNPS-EB: C | tall layia | |
| Lepidium latipes | CNPS-EB: B | dwarf peppergrass | |
| 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 |
| Pinus attenuata | CNPS-EB: A1 | knobcone pine | |
| Poa howellii | CNPS-EB: A2 | Howell's bluegrass | |
| Prunus subcordata | CNPS-EB: C | Pacific plum, Sierra plum | |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Silene laciniata subsp. californica | (formerly Silene c.) | CNPS-EB: C | Indian pink, California pink, California Indian pink |
| Trifolium fucatum | CNPS-EB: B | bull clover | |
| Trillium ovatum subsp. ovatum | CNPS-EB: A2 | white trillium |