| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Anemopsis californica | CNPS-EB: B | yerba mansa, lizard tail | |
| Apocynum androsaemifolium | CNPS-EB: A2 | bitter dogbane, dogbane | |
| Apocynum cannabinum | CNPS-EB: B | dogbane, Indian-hemp | |
| Asclepias cordifolia | (A. californica is more common | CNPS-EB: A1 | purple milkweed |
| Bolboschoenus maritimus subsp. paludosus | (formerly Scirpus m.) | CNPS-EB: C | bulrush |
| Carex aquatilis var. dives | CNPS-EB: A1 | Sitka sedge | |
| Carex obnupta | CNPS-EB: B | slough sedge | |
| Clarkia concinna subsp. concinna | CNPS-EB: C | large godetia | |
| Cordylanthus pilosus subsp. pilosus | CNPS-EB: B | hairy bird's-beak | |
| Forestiera pubescens | CNPS-EB: B | desert olive | |
| Fraxinus latifolia | CNPS-EB: B | Oregon ash | |
| Glycyrrhiza lepidota | CNPS-EB: C | wild licorice | |
| Isolepis cernua | (formerly Scirpus cernuus) | CNPS-EB: C | low club-rush |
| Juncus phaeocephalus var. paniculatus | CNPS-EB: B | panicled rush, brown-headed rush | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Pseudognaphalium beneolens | (formerly Gnaphalium canescens | CNPS-EB: C | fragrant everlasting |
| Rhus aromatica | (formerly R. trilobata) | CNPS-EB: C | skunk bush, skunkbrush, squawbush |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Arctostaphylos glandulosa subsp. glandulosa | CNPS-EB: B | Eastwood manzanita | |
| Blennosperma nanum var. nanum | CNPS-EB: C | blennosperma | |
| Calystegia sepium subsp. limnophila | CNPS-EB: B | hedge bindweed | |
| Castilleja ambigua subsp. ambigua | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5T4 CNDDB Rank: S3S4 | Johnny-nip | |
| Cicendia quadrangularis | CNPS-EB: A2 | timwort | |
| Cicuta maculata var. bolanderi | CNPS-EB: *A1 State CNPS: 2B.1 Global Rank: G5T4T5 CNDDB Rank: S2? | Bolander's water-hemlock, water hemlock | |
| Collinsia sparsiflora var. sparsiflora | CNPS-EB: C | few-flowered blue-eyed Mary | |
| Deschampsia cespitosa subsp. cespitosa | CNPS-EB: C | tufted hairgrass | |
| Horkelia californica var. frondosa | CNPS-EB: B | leafy horkelia | |
| Layia glandulosa | (historical-1983 but not seen | CNPS-EB: A1x | white layia |
| Lepidium latipes | CNPS-EB: B | dwarf peppergrass | |
| Linum lewisii var. lewisii | (historical-1936) | CNPS-EB: A1x | western blue flax |
| Lupinus affinis | CNPS-EB: A1 | lupine | |
| Pentachaeta alsinoides | CNPS-EB: C | tiny pentachaeta | |
| Pluchea odorata var. odorata | CNPS-EB: B | saltmarsh fleabane | |
| Sabulina californica | (formerly Minuartia californica) | CNPS-EB: A1 | California sandwort |
| Sidalcea diploscypha | CNPS-EB: A1 | fringed checkerbloom, fringed sidalcea | |
| Trifolium fucatum | CNPS-EB: B | bull clover | |
| Trifolium wormskioldii | CNPS-EB: A1 | cow clover | |
| Tropidocarpum gracile | CNPS-EB: B | slender tropidocarpum |