| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Anemopsis californica | CNPS-EB: B | yerba mansa, lizard tail | |
| Apocynum cannabinum | CNPS-EB: B | dogbane, Indian-hemp | |
| Atriplex argentea var. expansa | CNPS-EB: B | silverscale | |
| Atriplex coronata var. coronata | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4T3 CNDDB Rank: S3 | crownscale | |
| Bidens frondosa | CNPS-EB: B | sticktight | |
| Bidens laevis | CNPS-EB: A2 | bur-marigold | |
| Calystegia sepium subsp. limnophila | CNPS-EB: B | hedge bindweed | |
| Camissonia contorta | CNPS-EB: C | contorted primrose | |
| Camissonia strigulosa | CNPS-EB: A1 | contorted primrose | |
| Camissoniopsis micrantha | CNPS-EB: C | small primrose | |
| Chenopodium pratericola | CNPS-EB: A1 | ||
| Cicuta maculata var. bolanderi | CNPS-EB: *A1 State CNPS: 2B.1 Global Rank: G5T4T5 CNDDB Rank: S2? | Bolander's water-hemlock, water hemlock | |
| Croton californicus | CNPS-EB: A2 | California croton | |
| Deinandra kelloggii | (formerly Hemizonia k.) | CNPS-EB: A2 | Kellogg's tarweed |
| Eriogonum gracile var. gracile | CNPS-EB: C | slender woolly wild buckwheat, slender buckwheat | |
| Gilia capitata subsp. staminea | CNPS-EB: C | blue field gilia | |
| Helenium bigelovii | (H. puberulum is more common) | CNPS-EB: A2 | Bigelow's sneezeweed |
| Hibiscus lasiocarpos var. occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T3 CNDDB Rank: S3 | rose-mallow | |
| Hydrocotyle ranunculoides | CNPS-EB: A2 | floating marsh pennywort | |
| Lathyrus jepsonii var. jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T2 CNDDB Rank: S2 | delta tule pea, Delta tule pea | |
| Lessingia pectinata var. tenuipes | CNPS-EB: A2 | valley lessingia | |
| Lilaeopsis masonii | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G2 CNDDB Rank: S2 CESA Status: CR | Mason's lilaeopsis | |
| Lycopus americanus | CNPS-EB: A2 | cutleaf bugleweed | |
| Lythrum californicum | CNPS-EB: B | California loosestrife | |
| Nitrophila occidentalis | CNPS-EB: A1 | nitrophila | |
| Oenothera deltoides subsp. cognata | CNPS-EB: A2 | desert evening-primrose | |
| Oenothera deltoides subsp. howellii | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G5T1 CNDDB Rank: S1 FESA Status: FE CESA Status: CE | Antioch Dunes evening-primrose | |
| Persicaria lapathifolia | (formerly Polygonum lapathifol | CNPS-EB: B | willow weed |
| Phragmites australis | CNPS-EB: C | common reed | |
| Pluchea odorata var. odorata | CNPS-EB: B | saltmarsh fleabane | |
| Sesuvium verrucosum | CNPS-EB: B | western sea-purslane, sea-purslane | |
| Stachys albens | CNPS-EB: B | white hedge nettle | |
| Suaeda nigra | (formerly S. moquinii) | CNPS-EB: B | bush seepweed |
| Symphyotrichum lentum | (formerly Aster lentus) | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Suisun marsh aster |
| Triphysaria versicolor subsp. faucibarbata | CNPS-EB: B | smooth owl's-clover | |
| Acmispon strigosus | CNPS-EB: B | strigose trefoil | |
| Allenrolfea occidentalis | CNPS-EB: C | iodine bush | |
| Amsinckia tessellata var. tessellata | CNPS-EB: A1 | desert fiddleneck, devil's lettuce | |
| Carex aquatilis var. dives | CNPS-EB: A1 | Sitka sedge | |
| Carex comosa | CNPS-EB: *A1x State CNPS: 2B.1 Global Rank: G5 CNDDB Rank: S2 | bristly sedge | |
| Cephalanthus occidentalis | CNPS-EB: A2 | button bush | |
| Cicuta douglasii | CNPS-EB: A2 | water-hemlock | |
| Cuscuta pacifica var. pacifica | (formerly C. salina var. major) | CNPS-EB: C | salt-marsh dodder |
| Cyperus erythrorhizos | CNPS-EB: B | red-rooted cyperus | |
| Galium trifidum subsp. columbianum | CNPS-EB: A1 | trifid bedstraw | |
| Hydrocotyle verticillata | CNPS-EB: B | whorled marsh pennywort | |
| Leersia oryzoides | CNPS-EB: A1 | rice cutgrass | |
| Lupinus chamissonis | (historical-1963) | CNPS-EB: A1x | Chamisso's bush lupine |
| Lysimachia minima | (formerly Anagallis minima, Centunculus minimus) | CNPS-EB: A1 | chaffweed |
| Persicaria hydropiperoides | (formerly Polygonum h.) | CNPS-EB: A2 | false waterpepper, water-pepper |
| Persicaria punctata | (formerly Polygonum punctatum) | CNPS-EB: C | water smartweed |
| Phalaris arundinacea | CNPS-EB: A1 | reed canary grass | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Potamogeton zosteriformis | (historical-1949) | CNPS-EB: *A1x State CNPS: 2B.2 Global Rank: G5 CNDDB Rank: S3 | eel-grass pondweed |
| Salix gooddingii | CNPS-EB: B | Goodding's black willow | |
| Samolus parviflorus | CNPS-EB: A1 | seaside brookweed, water-pimpernel | |
| Schoenoplectus tabernaemontani | CNPS-EB: A1x | SOFT-STEM BULRUSH | |
| Sparganium eurycarpum var. eurycarpum | CNPS-EB: A1 | bur-reed | |
| Symphyotrichum subulatum var. parviflorum | (formerly Aster subulatus var. | CNPS-EB: B | slim aster |