| 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 | ||
| Alisma triviale | (formerly A. plantago-aquatica | CNPS-EB: C | water plantain |
| 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 |
| Arctostaphylos crustacea subsp. crustacea | CNPS-EB: C | brittleleaf manzanita | |
| Arnica discoidea | CNPS-EB: B | rayless arnica | |
| Castilleja rubicundula subsp. lithospermoides | CNPS-EB: B | cream sacs | |
| Cirsium remotifolium var. odontolepis | CNPS-EB: A1 | remote-leaved thistle | |
| Cordylanthus pilosus subsp. pilosus | CNPS-EB: B | hairy bird's-beak | |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Dendromecon rigida | CNPS-EB: A2 | bush poppy | |
| Echinodorus berteroi | CNPS-EB: A2 | burhead | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Kopsiopsis strobilacea | (formerly Boschniakia strobilacea) | CNPS-EB: A1 | California ground-cone |
| Layia hieracioides | CNPS-EB: C | tall layia | |
| Leptochloa fusca subsp. fascicularis | CNPS-EB: A1 | bearded sprangletop | |
| Leptosiphon parviflorus | (formerly Linanthus p.) | CNPS-EB: B | small-flowered linanthus, small-flowered leptosiphon |
| Malacothrix floccifera | CNPS-EB: C | woolly malacothrix | |
| Navarretia mellita | CNPS-EB: C | honey-scented navarretia | |
| Pickeringia montana var. montana | CNPS-EB: C | chaparral pea | |
| Piperia michaelii | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | Michael's rein-orchid | |
| Quercus xchasei | CNPS-EB: B | Chase oak | |
| Ribes divaricatum var. pubiflorum | CNPS-EB: C | straggle bush, straggly gooseberry | |
| Rorippa curvisiliqua | CNPS-EB: B | yellow cress | |
| Rorippa palustris subsp. palustris | CNPS-EB: B | marsh yellow-cress | |
| Rosa spithamea | CNPS-EB: C | coast ground rose, ground rose | |
| Rumex salicifolius | (formerly R. salicifolius var. salicifolius) | CNPS-EB: B | willow dock |
| Senecio aronicoides | CNPS-EB: C | rayless ragwort, California butterweed | |
| Stebbinsoseris heterocarpa | CNPS-EB: C | grassland silverpuffs, derived microseris | |
| Streptanthus glandulosus subsp. glandulosus | CNPS-EB: B | jewelflower | |
| Trifolium obtusiflorum | CNPS-EB: B | clammy clover, creek clover | |
| Amaranthus californicus | CNPS-EB: B | Californian amaranth | |
| Amsinckia eastwoodiae | CNPS-EB: A2 | Eastwood's fiddleneck | |
| Arbutus menziesii | CNPS-EB: B | Pacific madrone | |
| Calamagrostis rubescens | CNPS-EB: B | pine reed grass, pine grass | |
| Cirsium brevistylum | CNPS-EB: B | indian thistle | |
| Deschampsia elongata | CNPS-EB: C | slender hair grass | |
| Elymus multisetus | CNPS-EB: C | big squirreltail | |
| Elymus trachycaulus subsp. trachycaulus | CNPS-EB: A1 | slender wheat grass | |
| Elymus xhansenii | CNPS-EB: B | Hansen squirreltail | |
| Eryngium armatum | CNPS-EB: A1 | coastal button-celery, coast coyote-thistle | |
| Festuca californica | CNPS-EB: C | California fescue | |
| Festuca octoflora | CNPS-EB: A2 | sixweeks grass, slender fescue | |
| Festuca rubra | CNPS-EB: C | red fescue | |
| Hesperevax acaulis var. ambusticola | (H. sparsiflora is more common | CNPS-EB: A1x | fire evax |
| Hesperevax caulescens | (H. sparsiflora is more common | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | hogwallow starfish |
| Heterotheca sessiliflora subsp. bolanderi | (H. s. ssp. echioides is more | CNPS-EB: C | Bolander goldenaster |
| Layia gaillardioides | CNPS-EB: A2 | woodland layia | |
| Microseris elegans | CNPS-EB: A1 | elegant microseris | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Pseudognaphalium beneolens | (formerly Gnaphalium canescens | CNPS-EB: C | fragrant everlasting |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| Rumex salicifolius var. unknown | CNPS-EB: A2? | willow dock | |
| Sabulina californica | (formerly Minuartia californica) | CNPS-EB: A1 | California sandwort |
| Stellaria nitens | CNPS-EB: C | shining chickweed | |
| Stipa lepida | CNPS-EB: C | foothill needlegrass | |
| Zeltnera davyi | (formerly Centaurium d.) | CNPS-EB: B | Davy's centaury, conchalagua |