| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Allenrolfea occidentalis | CNPS-EB: C | iodine bush | |
| Amaranthus californicus | CNPS-EB: B | Californian amaranth | |
| Anemopsis californica | CNPS-EB: B | yerba mansa, lizard tail | |
| Atriplex depressa | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | brittlescale | |
| Balsamorhiza macrolepis | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | big-scale balsamroot | |
| Blepharizonia plumosa | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G1G2 CNDDB Rank: S1S2 | big tarplant | |
| Bolboschoenus maritimus subsp. paludosus | (formerly Scirpus m.) | CNPS-EB: C | bulrush |
| 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 |
| Deinandra bacigalupii | (formerly Hemizonia increscens | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 CESA Status: CE | Livermore tarplant |
| Deinandra lobbii | (formerly Hemizonia l.) | CNPS-EB: C | three-rayed tarweed |
| Echinodorus berteroi | CNPS-EB: A2 | burhead | |
| Extriplex joaquinana | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | San Joaquin spearscale, San Joaquin saltbush | |
| Fritillaria agrestis | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | stinkbells | |
| Helianthus californicus | CNPS-EB: C | California sunflower | |
| Lessingia nemaclada | CNPS-EB: A2 | slender-stemmed lessignia | |
| Mimetanthe pilosa | (formerly Mimulus pilosus) | CNPS-EB: B | downy monkeyflower |
| Nicotiana quadrivalvis | CNPS-EB: B | indian tobacco | |
| Panicum capillare | CNPS-EB: A2 | witch grass | |
| Persicaria lapathifolia | (formerly Polygonum lapathifol | CNPS-EB: B | willow weed |
| Phacelia ciliata | CNPS-EB: B | Great Valley phacelia, Great Valley phacelia | |
| Prunus emarginata | CNPS-EB: C | bitter cherry | |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| Rumex californicus | (formerly R. salicifolius var. dentatus) | CNPS-EB: C | willow dock |
| Stachys albens | CNPS-EB: B | white hedge nettle | |
| Trifolium fucatum | CNPS-EB: C | bull clover | |
| Triglochin scilloides | CNPS-EB: C | flowering-quillwort | |
| Amsinckia eastwoodiae | CNPS-EB: A2 | Eastwood's fiddleneck | |
| Amsinckia lycopsoides | CNPS-EB: C | bugloss-flowered fiddleneck, bugloss fiddleneck | |
| Aphyllon vallicola | CNPS-EB: B | California broom-rape | |
| Arthrocnemum subterminale | CNPS-EB: A2 | Parish's glasswort | |
| Astragalus asymmetricus | CNPS-EB: C | San Joaquin locoweeed | |
| Astragalus tener var. tener | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T1 CNDDB Rank: S1 | alkali milkvetch | |
| Athysanus unilateralis | (formerly Heterodraba unilateralis) | CNPS-EB: A1 | heterodraba |
| Atriplex fruticulosa | CNPS-EB: B | ballscale, little oak orach, ball saltbush | |
| Blennosperma nanum var. nanum | CNPS-EB: C | blennosperma | |
| Blepharizonia laxa | (formerly B. plumosa ssp. visc | CNPS-EB: B | big tarplant |
| Brodiaea terrestris subsp. terrestris | CNPS-EB: B | dwarf brodiaea | |
| Caulanthus flavescens | CNPS-EB: A2 | yellow-flowered thelypodium | |
| Cirsium cymosum var. cymosum | CNPS-EB: C | peregrine thistle | |
| Cuscuta indecora var. indecora | CNPS-EB: A1x | large-seeded dodder, pretty dodder | |
| Deinandra kelloggii | (formerly Hemizonia k.) | CNPS-EB: A2 | Kellogg's tarweed |
| Downingia bella | CNPS-EB: A1x | Hoover's downingia | |
| Downingia pulchella | CNPS-EB: B | flat-faced downingia | |
| Eriogonum angulosum | CNPS-EB: B | angle-stem wild buckwheat, angle-stemmed eriogonum | |
| Erythranthe microphylla | CNPS-EB: A1x | ||
| Eschscholzia caespitosa | CNPS-EB: A1 | tufted poppy | |
| Euphorbia serpillifolia subsp. serpillifolia | CNPS-EB: C | thyme-leaved spurge | |
| Hesperevax caulescens | (H. sparsiflora is more common | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | hogwallow starfish |
| Heterotheca oregona var. scaberrima | CNPS-EB: A1 | Oregon goldenaster | |
| Hoita macrostachya | CNPS-EB: B | California hemp | |
| Lasthenia minor | CNPS-EB: A1 | coastal goldfields, woolly goldfields | |
| Lepidium acutidens | CNPS-EB: C | sharp-toothed pepper-grass | |
| Lepidium dictyotum | CNPS-EB: B | alkali pepper-grass | |
| Lepidium latipes | CNPS-EB: B | dwarf peppergrass | |
| Leptochloa fusca subsp. fascicularis | CNPS-EB: A1 | bearded sprangletop | |
| Leptosiphon aureus | (formerly L.acicularis, Linanthus acicularis) | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4? CNDDB Rank: S4? | bristly leptosiphon, bristly linanthus |
| Lupinus affinis | CNPS-EB: A1 | lupine | |
| Matricaria occidentalis | (formerly Chamomilla o.) (hist | CNPS-EB: A1x | valley mayweed, valley pineapple weed |
| Mentzelia laevicaulis var. laevicaulis | (historical-1969) | CNPS-EB: A1x | blazing star |
| Monolopia major | CNPS-EB: B | cupped monolopia | |
| Myosurus minimus subsp. apus | CNPS-EB: *A1 State CNPS: 3.1 Global Rank: G5T2Q CNDDB Rank: S2 | little mousetail | |
| Penstemon heterophyllus var. purdyi | CNPS-EB: A2 | foothill penstemon | |
| Piperia michaelii | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | Michael's rein-orchid | |
| Plagiobothrys glaber | CNPS-EB: *A1 State CNPS: 1A Global Rank: GX CNDDB Rank: SX | hairless popcornflower | |
| Plagiobothrys humistratus | CNPS-EB: A2 | low popcornflower, dwarf allocarya | |
| Plagiobothrys trachycarpus | CNPS-EB: C | rough-nutlet popcornflower, rough-fruited allocarya | |
| Plantago elongata | CNPS-EB: B | annual coast plantain | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Puccinellia nuttalliana | CNPS-EB: A1 | Nuttall's alkali grass | |
| Rumex salicifolius | (formerly R. salicifolius var. salicifolius) | CNPS-EB: B | willow dock |
| Scutellaria californica | CNPS-EB: B | California skullcap | |
| Spergularia macrotheca var. leucantha | CNPS-EB: A2 | large-flowered sand spurry | |
| Spergularia macrotheca var. longistyla | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T2 CNDDB Rank: S2 | large-flowered sand spurry | |
| Stebbinsoseris heterocarpa | CNPS-EB: C | grassland silverpuffs, derived microseris | |
| Trifolium barbigerum | CNPS-EB: A2 | bearded clover | |
| Trifolium depauperatum var. depauperatum | (vars. amplectens and truncatu | CNPS-EB: B | dwarf sack clover |
| Trifolium flavulum | (Included within T. fucatum in | CNPS-EB: A1 | bull clover |
| Trifolium hydrophilum | (vars. amplectens and truncatu | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | saline clover |
| Trifolium lilacinum | (Included within T. barbigerum | CNPS-EB: A1 | Gray's clover |
| Tropidocarpum capparideum | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 | caper-fruited tropidocarpum | |
| Vicia hassei | CNPS-EB: A2 | slender vetch |