| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Alisma triviale | (formerly A. plantago-aquatica | CNPS-EB: C | water plantain |
| Amaranthus californicus | CNPS-EB: B | Californian amaranth | |
| Amaranthus palmeri | CNPS-EB: A1x | Palmer's amaranth | |
| Anemopsis californica | CNPS-EB: B | yerba mansa, lizard tail | |
| Atriplex serenana var. serenana | CNPS-EB: A1 | bractscale | |
| Berula erecta | CNPS-EB: C | cutleaf water-parsnip | |
| Bolboschoenus maritimus subsp. paludosus | (formerly Scirpus m.) | CNPS-EB: C | bulrush |
| Carex barbarae | CNPS-EB: C | whiteroot sedge, Santa Barbara sedge, St. Barbara's sedge | |
| Centromadia parryi subsp. congdonii | (formerly Hemizonia p. ssp. c. | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G3T2 CNDDB Rank: S2 | Congdon's tarplant |
| Chenopodium berlandieri var. unknown | Split into 2 varieties. Sites need to be surveyed to determine vars.. | CNPS-EB: A2? | pitseed goosefoot |
| Chenopodium rubrum | CNPS-EB: A1 | red pigweed, red goosefoot | |
| Cuscuta indecora var. indecora | CNPS-EB: A1x | large-seeded dodder, pretty dodder | |
| Deschampsia danthonioides | CNPS-EB: C | annual hair grass | |
| Downingia pulchella | CNPS-EB: B | flat-faced downingia | |
| Epilobium campestre | CNPS-EB: B | smooth boisduvalia | |
| Eryngium jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | ||
| Euphorbia serpillifolia subsp. serpillifolia | CNPS-EB: C | thyme-leaved spurge | |
| Extriplex joaquinana | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | San Joaquin spearscale, San Joaquin saltbush | |
| Festuca idahoensis | CNPS-EB: C | Idaho fescue, blue bunchgrass | |
| Fraxinus latifolia | CNPS-EB: B | Oregon ash | |
| Lathyrus jepsonii var. californicus | CNPS-EB: B | buff pea | |
| Layia chrysanthemoides | CNPS-EB: A2 | smooth layia | |
| Lepidium latipes | CNPS-EB: B | dwarf peppergrass | |
| Navarretia prostrata | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | prostrate vernal pool navarretia | |
| Oenothera elata subsp. hookeri | CNPS-EB: C | evening-primrose | |
| Persicaria lapathifolia | (formerly Polygonum lapathifol | CNPS-EB: B | willow weed |
| Plagiobothrys canescens var. canescens | CNPS-EB: C | valley popcornflower | |
| Plagiobothrys glaber | CNPS-EB: *A1 State CNPS: 1A Global Rank: GX CNDDB Rank: SX | hairless popcornflower | |
| Plagiobothrys stipitatus var. stipitatus | (var. micranthus is more commo | CNPS-EB: C | showy great valley popcornflower, stipitate allocarya |
| Plagiobothrys trachycarpus | CNPS-EB: C | rough-nutlet popcornflower, rough-fruited allocarya | |
| Plantago elongata | CNPS-EB: B | annual coast plantain | |
| Pleuropogon californicus var. californicus | CNPS-EB: B | semaphore grass | |
| Psilocarphus brevissimus var. brevissimus | CNPS-EB: B | dwarf woollyheads, dwarf woolly-marbles | |
| Psilocarphus oregonus | CNPS-EB: A2 | Oregon woollyheads, Oregon woolly-marbles | |
| Rumex transitorius | CNPS-EB: B | willow dock | |
| Salix gooddingii | CNPS-EB: B | Goodding's black willow | |
| Stachys ajugoides | (var. rigida is more common) | CNPS-EB: A2 | bugle hedge nettle |
| Stebbinsoseris heterocarpa | CNPS-EB: C | grassland silverpuffs, derived microseris | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Trifolium barbigerum | CNPS-EB: A2 | bearded clover | |
| Trifolium hydrophilum | (vars. amplectens and truncatu | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | saline clover |
| Triglochin scilloides | CNPS-EB: C | flowering-quillwort | |
| Triphysaria versicolor subsp. faucibarbata | CNPS-EB: B | smooth owl's-clover | |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Eriogonum fasciculatum var. foliolosum | CNPS-EB: A1 | leafy California buckwheat, California buckwheat | |
| Gilia capitata subsp. capitata | CNPS-EB: A1 | blue field gilia | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Lasthenia glabrata subsp. glabrata | CNPS-EB: A2 | yellow-ray goldfields | |
| Limosella acaulis | CNPS-EB: A1 | southern mudwort | |
| Lithophragma bolanderi | CNPS-EB: A1 | Bolander starflower | |
| Lomatium caruifolium var. caruifolium | CNPS-EB: B | caraway-leaved lomatium | |
| Trifolium fucatum | CNPS-EB: B | bull clover |