| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Bolboschoenus fluviatilis | (formerly Scirpus f.) | CNPS-EB: A1x | river bulrush |
| Chenopodium rubrum var. unknown | CNPS-EB: A1? | red pigweed, red goosefoot | |
| Cuscuta campestris | CNPS-EB: A2 | field dodder | |
| Lasthenia glabrata subsp. glabrata | CNPS-EB: A2 | yellow-ray goldfields | |
| Plagiobothrys glaber | CNPS-EB: *A1 State CNPS: 1A | hairless popcornflower | |
| Rumex fueginus | CNPS-EB: A2 | golden dock | |
| Rumex transitorius | CNPS-EB: A2 | willow dock | |
| Sparganium eurycarpum var. eurycarpum | CNPS-EB: A1 | bur-reed | |
| Sparganium eurycarpum var. greenei | CNPS-EB: A1 | Greene's bur-reed | |
| Symphyotrichum lanceolatum var. hesperium | (formerly Aster lanceolatus ss | CNPS-EB: A2 | marsh aster |
| Alisma triviale | (formerly A. plantago-aquatica | CNPS-EB: B-PV | water plantain |
| Bidens laevis | CNPS-EB: B | bur-marigold | |
| Bolboschoenus maritimus subsp. paludosus | (formerly Scirpus m.) | CNPS-EB: C | bulrush |
| Downingia pulchella | CNPS-EB: B-PV | flat-faced downingia | |
| Juncus phaeocephalus var. paniculatus | CNPS-EB: B | panicled rush, brown-headed rush | |
| Juncus phaeocephalus var. phaeocephalus | CNPS-EB: C | brownheaded rush | |
| Persicaria lapathifolia | (formerly Polygonum lapathifol | CNPS-EB: B | willow weed |
| Plantago elongata | CNPS-EB: B-PV | annual coast plantain | |
| Rumex salicifolius | (formerly R. salicifolius var. salicifolius) | CNPS-EB: B | willow dock |
| Stachys albens | CNPS-EB: B-PV | white hedge nettle | |
| Symphyotrichum subulatum var. parviflorum | (formerly Aster subulatus var. | CNPS-EB: B-PV | slim aster |
| Trifolium fucatum | CNPS-EB: B-PV | bull clover |