| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Alisma triviale | (formerly A. plantago-aquatica | CNPS-EB: C | water plantain |
| Carex praegracilis | CNPS-EB: C | black creeper sedge, freeway sedge, deer-bed sedge | |
| Castilleja ambigua subsp. ambigua | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4T4 CNDDB Rank: S3S4 | Johnny-nip | |
| Castilleja rubicundula subsp. lithospermoides | CNPS-EB: B | cream sacs | |
| Chloropyron molle subsp. molle | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T1 CNDDB Rank: S1 FESA Status: FE CESA Status: CR | soft salty bird's-beak, soft bird's-beak | |
| Cicendia quadrangularis | CNPS-EB: A2 | timwort | |
| Clarkia purpurea subsp. purpurea | (ssp. quadrivulnera is more co | CNPS-EB: A2 | purple clarkia |
| Cornus sericea subsp. occidentalis | CNPS-EB: C | western dogwood | |
| Cornus sericea subsp. unknown | CNPS-EB: C? | American dogwood | |
| Cuscuta pacifica var. pacifica | (formerly C. salina var. major) | CNPS-EB: C | salt-marsh dodder |
| Danthonia californica | CNPS-EB: B | California oat grass | |
| Deinandra corymbosa | (formerly Hemizonia corymbosa) | CNPS-EB: A2 | coast tarweed |
| Deschampsia cespitosa subsp. cespitosa | CNPS-EB: C | tufted hairgrass | |
| Deschampsia danthonioides | CNPS-EB: C | annual hair grass | |
| Epilobium campestre | CNPS-EB: B | smooth boisduvalia | |
| Eryngium armatum | CNPS-EB: A1 | coastal button-celery, coast 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 | |
| Hemizonia congesta subsp. lutescens | CNPS-EB: B | hayfield tarweed | |
| Hordeum brachyantherum subsp. californicum | (ssp. brachyantherum is more common | CNPS-EB: A2 | California barley |
| Hordeum depressum | CNPS-EB: B | low barley, alkali barley | |
| Koeleria macrantha | CNPS-EB: C | june grass | |
| Lathyrus jepsonii var. californicus | CNPS-EB: B | buff pea | |
| Limonium californicum | CNPS-EB: C | western marsh-rosemary, sea-lavender, ma | |
| Microseris douglasii subsp. tenella | (subsp douglasii is more common) | CNPS-EB: A2 | silver puffs |
| Muilla maritima | CNPS-EB: B | common muilla | |
| Oenothera elata subsp. hookeri | CNPS-EB: B | evening-primrose | |
| Persicaria hydropiperoides | (formerly Polygonum h.) | CNPS-EB: A2 | false waterpepper, water-pepper |
| Phacelia tanacetifolia | CNPS-EB: B | tansy phacelia | |
| Pleuropogon californicus var. californicus | CNPS-EB: B | semaphore grass | |
| Prunus subcordata | CNPS-EB: C | Pacific plum, Sierra plum | |
| Quercus garryana var. garryana | CNPS-EB: B | Oregon oak | |
| Rhamnus crocea | CNPS-EB: C | spiny redberry | |
| Rumex californicus | (formerly R. salicifolius var. dentatus) | CNPS-EB: C | willow dock |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Spartina foliosa | CNPS-EB: B | California cord grass | |
| Spergularia macrotheca var. macrotheca | CNPS-EB: A2 | large-flowered sand spurry | |
| Stipa cernua | CNPS-EB: C | nodding needlegrass | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Symphyotrichum subulatum var. parviflorum | (formerly Aster subulatus var. | CNPS-EB: B | slim aster |
| Trifolium fucatum | CNPS-EB: C | bull clover | |
| Triglochin maritima | CNPS-EB: C | common arrow-grass, seaside arrow-grass | |
| Triglochin scilloides | CNPS-EB: C | flowering-quillwort | |
| Cornus sericea subsp. sericea | CNPS-EB: C | American dogwood | |
| Crassula aquatica | CNPS-EB: B | water pygmy-weed | |
| Echinodorus berteroi | CNPS-EB: A2 | burhead | |
| Epilobium ciliatum subsp. watsonii | (ssp. ciliatum is more common) | CNPS-EB: A1 | San Francisco willowherb |
| Ericameria arborescens | CNPS-EB: B | golden-fleece | |
| Festuca rubra | CNPS-EB: C | red fescue | |
| Helianthus californicus | CNPS-EB: C | California sunflower | |
| Holocarpha macradenia | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FT CESA Status: CE | Santa Cruz tarplant | |
| Holozonia filipes | CNPS-EB: A2 | whitecrown, holozonia | |
| Isoetes howellii | CNPS-EB: A1 | Howell's quillwort | |
| Juncus phaeocephalus var. paniculatus | CNPS-EB: B | panicled rush, brown-headed rush | |
| Juncus phaeocephalus var. phaeocephalus | CNPS-EB: B | brownheaded rush | |
| Lepidium latipes | CNPS-EB: B | dwarf peppergrass | |
| Lupinus affinis | CNPS-EB: A1 | lupine | |
| Monolopia major | CNPS-EB: B | cupped monolopia | |
| Navarretia mellita | CNPS-EB: C | honey-scented navarretia | |
| Nemophila parviflora var. parviflora | CNPS-EB: B | small-flowered nemophila | |
| Plagiobothrys humistratus | CNPS-EB: A2 | low popcornflower, dwarf allocarya | |
| Plagiobothrys stipitatus var. stipitatus | (var. micranthus is more commo | CNPS-EB: C | showy great valley popcornflower, stipitate allocarya |
| Plagiobothrys tenellus | CNPS-EB: B | Pacific popcornflower, slender popcornflower | |
| Plagiobothrys trachycarpus | CNPS-EB: C | rough-nutlet popcornflower, rough-fruited allocarya | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Prunella vulgaris var. lanceolata | (var. vulgaris is more common) | CNPS-EB: B | selfheal |
| Quercus xjolonensis | CNPS-EB: A1? | blue oak x valley oak | |
| Rhus aromatica | (formerly R. trilobata) | CNPS-EB: B | skunk bush, skunkbrush, squawbush |
| Sagittaria latifolia | CNPS-EB: A1 | arrowhead | |
| Salix gooddingii | CNPS-EB: B | Goodding's black willow | |
| Stellaria nitens | CNPS-EB: C | shining chickweed | |
| Triodanis biflora | CNPS-EB: A2 | Venus' looking-glass |