| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Carex densa | CNPS-EB: B | dense sedge | |
| Carex subbracteata | CNPS-EB: B | small-bracted sedge | |
| Cicendia quadrangularis | CNPS-EB: A2 | timwort | |
| Cornus sericea subsp. unknown | CNPS-EB: C? | American dogwood | |
| Danthonia californica | CNPS-EB: B-PV | California oat grass | |
| Deinandra corymbosa | (formerly Hemizonia corymbosa) | CNPS-EB: A2 | coast tarweed |
| Deinandra lobbii | (formerly Hemizonia l.) | CNPS-EB: C | three-rayed tarweed |
| Deschampsia danthonioides | CNPS-EB: B-PV | annual hair grass | |
| Elymus multisetus | CNPS-EB: B-PV | big squirreltail | |
| Elymus trachycaulus subsp. trachycaulus | CNPS-EB: A1 | slender wheat grass | |
| Eriophyllum staechadifolium | CNPS-EB: A2 | seaside woolly sunflower, lizard-tail | |
| Eryngium armatum | CNPS-EB: A1 | coastal button-celery, coast coyote-thistle | |
| Eryngium castrense | CNPS-EB: A2 | great valley coyote-thistle, Vasey's coyote-thistle | |
| Fraxinus latifolia | CNPS-EB: B | Oregon ash | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Horkelia californica var. californica | CNPS-EB: A1 | California horkelia | |
| Juncus phaeocephalus var. paniculatus | CNPS-EB: B | panicled rush, brown-headed rush | |
| Juncus phaeocephalus var. phaeocephalus | CNPS-EB: B | brownheaded rush | |
| Lasthenia conjugens | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FE | Contra Costa goldfields | |
| Lathyrus jepsonii var. californicus | CNPS-EB: B | buff pea | |
| Layia chrysanthemoides | CNPS-EB: A2 | smooth layia | |
| Lepidium latipes | CNPS-EB: B-PV | dwarf peppergrass | |
| Lupinus arboreus | CNPS-EB: A2 | yellow bush lupine | |
| Lysimachia minima | (formerly Anagallis minima, Centunculus minimus) | CNPS-EB: A1 | chaffweed |
| Phacelia tanacetifolia | CNPS-EB: B | tansy phacelia | |
| Piperia transversa | CNPS-EB: B | flat spurred piperia, transverse piperia | |
| Plagiobothrys trachycarpus | CNPS-EB: C | rough-nutlet popcornflower, rough-fruited allocarya | |
| Populus trichocarpa | (formerly P. balsamifera var. | CNPS-EB: C | black cottonwood |
| Rumex salicifolius | (formerly R. salicifolius var. salicifolius) | CNPS-EB: B | willow dock |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Setaria parviflora | CNPS-EB: B | knotroot bristle grass, perennial foxtail | |
| Spiranthes romanzoffiana | CNPS-EB: A1 | hooded ladies' tresses | |
| Stipa pulchra | CNPS-EB: B-PV | purple needlegrass | |
| Verbena hastata | CNPS-EB: A1 | blue vervain | |
| Bromus sitchensis var. maritimus | (formerly B. maritimus) | CNPS-EB: A1 | maritime brome, seaside brome grass |
| Castilleja wightii | CNPS-EB: B | Wight's indian paintbrush | |
| Collinsia sparsiflora var. sparsiflora | CNPS-EB: C | few-flowered blue-eyed Mary | |
| Cyperus odoratus | CNPS-EB: A1 | coarse cyperus | |
| Dirca occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | western leatherwood | |
| Eleocharis acicularis var. acicularis | CNPS-EB: B | needle spike-rush | |
| Festuca idahoensis | CNPS-EB: B-PV | Idaho fescue, blue bunchgrass | |
| Hemizonia congesta subsp. lutescens | CNPS-EB: B | hayfield tarweed | |
| Holocarpha macradenia | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FT CESA Status: CE | Santa Cruz tarplant | |
| Isolepis cernua | (formerly Scirpus cernuus) | CNPS-EB: C | low club-rush |
| Lasthenia glaberrima | CNPS-EB: B | smooth goldfields | |
| Lathyrus jepsonii var. jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T2 CNDDB Rank: S2 | delta tule pea, Delta tule pea | |
| Lupinus chamissonis | (historical-1963) | CNPS-EB: A1x | Chamisso's bush lupine |
| Microseris bigelovii | (historical-1891) | CNPS-EB: A1x | coast microseris |
| Pleuropogon californicus var. californicus | CNPS-EB: B-PV | semaphore grass | |
| Spergularia macrotheca var. macrotheca | CNPS-EB: A2 | large-flowered sand spurry | |
| Stachys ajugoides | (var. rigida is more common) | CNPS-EB: A2 | bugle hedge nettle |
| Stephanomeria elata | CNPS-EB: A1 | stephanomeria | |
| Tetrapteron graciliflorum | CNPS-EB: B-PV | hill sun cup | |
| Trifolium fucatum | CNPS-EB: B | bull clover | |
| Zeltnera trichantha | (formerly Centaurium tricanthu | CNPS-EB: A1x | alkali centaury |