| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Alopecurus saccatus | CNPS-EB: B | Howell's meadow foxtail | |
| Arthrocnemum subterminale | CNPS-EB: A2 | Parish's glasswort | |
| Astragalus tener var. tener | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T1 CNDDB Rank: S1 | alkali milkvetch | |
| Atriplex depressa | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | brittlescale | |
| Atriplex fruticulosa | CNPS-EB: B | ballscale, little oak orach, ball saltbush | |
| Atriplex minuscula | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G2 CNDDB Rank: S2 | LESSER SALTSCALE | |
| Bidens frondosa | CNPS-EB: B | sticktight | |
| Bolboschoenus maritimus subsp. paludosus | (formerly Scirpus m.) | CNPS-EB: C | bulrush |
| Brodiaea terrestris subsp. terrestris | CNPS-EB: B | dwarf brodiaea | |
| Castilleja ambigua subsp. ambigua | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5T4 CNDDB Rank: S3S4 | Johnny-nip | |
| 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 |
| Crassula aquatica | CNPS-EB: B | water pygmy-weed | |
| Cuscuta californica var. californica | CNPS-EB: A2 | California dodder | |
| Downingia pulchella | CNPS-EB: B | flat-faced downingia | |
| Dudleya cymosa subsp. paniculata | CNPS-EB: B | spreading dudleya | |
| Eleocharis acicularis var. acicularis | CNPS-EB: B | needle spike-rush | |
| Eryngium aristulatum var. hooveri | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G5T1 CNDDB Rank: S1 | Hoover's button-celery | |
| Extriplex joaquinana | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | San Joaquin spearscale, San Joaquin saltbush | |
| Glycyrrhiza lepidota | CNPS-EB: C | wild licorice | |
| Hordeum depressum | CNPS-EB: B | low barley, alkali barley | |
| Lasthenia conjugens | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FE | Contra Costa goldfields | |
| Lasthenia glaberrima | CNPS-EB: B | smooth goldfields | |
| Lasthenia glabrata subsp. glabrata | CNPS-EB: A2 | yellow-ray goldfields | |
| Lepidium oxycarpum | CNPS-EB: A2 | sharp-podded pepper-grass | |
| Lomatium caruifolium var. caruifolium | CNPS-EB: B | caraway-leaved lomatium | |
| Montia fontana | CNPS-EB: C | water chickweed, blinks, water chickweed | |
| Muilla maritima | CNPS-EB: B | common muilla | |
| Myosurus minimus subsp. minimus | CNPS-EB: C | common mouse-tail | |
| Myosurus sessilis | CNPS-EB: A1 | sessile mouse-tail | |
| Navarretia prostrata | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | prostrate vernal pool navarretia | |
| Phacelia ciliata | CNPS-EB: B | Great Valley phacelia, Great Valley phacelia | |
| Phragmites australis | CNPS-EB: C | common reed | |
| Pilularia americana | CNPS-EB: A1 | pillwort | |
| Plagiobothrys humistratus | CNPS-EB: A2 | low popcornflower, dwarf allocarya | |
| Plagiobothrys leptocladus | CNPS-EB: A1 | alkali plagiobothrys | |
| Plagiobothrys stipitatus var. stipitatus | (var. micranthus is more commo | CNPS-EB: C | showy great valley popcornflower, stipitate allocarya |
| Plantago elongata | CNPS-EB: B | annual coast plantain | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| 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 | |
| Puccinellia simplex | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | little alkali grass | |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| Spergularia macrotheca var. unknown | CNPS-EB: A2? | large-flowered sand spurry | |
| Stachys ajugoides | (var. rigida is more common) | CNPS-EB: A2 | bugle hedge nettle |
| Stachys albens | CNPS-EB: B | white hedge nettle | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Streptanthus albidus subsp. peramoenus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T2 CNDDB Rank: S2 | most beautiful jewel-flower | |
| Suaeda nigra | (formerly S. moquinii) | CNPS-EB: B | bush seepweed |
| Trifolium barbigerum | CNPS-EB: A2 | bearded clover | |
| Trifolium depauperatum var. depauperatum | (vars. amplectens and truncatu | CNPS-EB: B | dwarf sack clover |
| Trifolium fucatum | CNPS-EB: B | bull 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 | |
| Castilleja wightii | CNPS-EB: B | Wight's indian paintbrush | |
| Chenopodium rubrum | CNPS-EB: A1 | red pigweed, red goosefoot | |
| Cuscuta campestris | CNPS-EB: A1 | field dodder | |
| Elatine brachysperma | CNPS-EB: A1 | waterwort | |
| Epilobium campestre | CNPS-EB: B | smooth boisduvalia | |
| Festuca octoflora | CNPS-EB: A2 | sixweeks grass, slender fescue | |
| Galium andrewsii subsp. gatense | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5T3 CNDDB Rank: S3 | phlox-leaf serpentine bedstraw, serpentine bedstraw | |
| Juncus oxymeris | CNPS-EB: A1 | pointed rush | |
| Juncus phaeocephalus var. paniculatus | CNPS-EB: B | panicled rush, brown-headed rush | |
| Layia chrysanthemoides | CNPS-EB: A2 | smooth layia | |
| Lepidium dictyotum | CNPS-EB: B | alkali pepper-grass | |
| Limosella acaulis | CNPS-EB: A1 | southern mudwort | |
| Mentzelia lindleyi | CNPS-EB: B | Lindley's blazing star | |
| Microseris douglasii subsp. tenella | (subsp douglasii is more common) | CNPS-EB: A2 | silver puffs |
| Persicaria hydropiperoides | (formerly Polygonum h.) | CNPS-EB: A2 | false waterpepper, water-pepper |
| Petunia parviflora | CNPS-EB: A1 | wild petunia | |
| Sabulina californica | (formerly Minuartia californica) | CNPS-EB: A1 | California sandwort |