| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Bromus sitchensis var. maritimus | (formerly B. maritimus) | CNPS-EB: A1 | maritime brome, seaside brome grass |
| Eleocharis parvula | CNPS-EB: *A1 State CNPS: 4.3 | small spikerush | |
| Chenopodium rubrum var. unknown | CNPS-EB: A1? | red pigweed, red goosefoot | |
| Elymus stebbinsii | CNPS-EB: A1 | Stebbins' wheat grass, Parish's wheat-grass | |
| Juncus bufonius var. occidentalis | (historical-1895) (vars. bufon | CNPS-EB: A1x | western toad rush, toad rush |
| Limosella acaulis | CNPS-EB: A2 | southern mudwort | |
| Phalaris arundinacea | CNPS-EB: A1 | reed canary grass | |
| Plagiobothrys glaber | CNPS-EB: *A1 State CNPS: 1A | hairless popcornflower | |
| Sagittaria latifolia | CNPS-EB: A1x | arrowhead | |
| Senecio aphanactis | CNPS-EB: *A1x State CNPS: 1B.2 | chaparral ragwort, rayless ragwort | |
| Sparganium eurycarpum var. eurycarpum | CNPS-EB: A1 | bur-reed | |
| Sparganium eurycarpum var. greenei | CNPS-EB: A1 | Greene's bur-reed | |
| Alisma triviale | (formerly A. plantago-aquatica | CNPS-EB: B-PV | water plantain |
| Bolboschoenus maritimus subsp. paludosus | (formerly Scirpus m.) | CNPS-EB: C | bulrush |
| Limonium californicum | CNPS-EB: B-PV | western marsh-rosemary, sea-lavender, ma | |
| Platanus racemosa | CNPS-EB: B-PV | western sycamore, California sycamore | |
| Prunus ilicifolia subsp. ilicifolia | CNPS-EB: B | islay, holly-leafed cherry | |
| Pseudognaphalium beneolens | (formerly Gnaphalium canescens | CNPS-EB: C | fragrant everlasting |
| Bidens frondosa | CNPS-EB: B | sticktight | |
| Downingia pulchella | CNPS-EB: B-PV | flat-faced downingia | |
| Festuca rubra | CNPS-EB: B-PV | red fescue | |
| Quercus lobata | CNPS-EB: B-PV | valley oak, roble | |
| Stipa lepida | CNPS-EB: B-PV | foothill needlegrass | |
| Stipa pulchra | CNPS-EB: B-PV | purple needlegrass | |
| Trifolium fucatum | CNPS-EB: B-PV | bull clover |