| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Agrostis hallii | CNPS-EB: A2 | Hall's bent grass | |
| Amaranthus blitoides | CNPS-EB: C | procumbent pigweed, prostrate amaranth | |
| Anemopsis californica | CNPS-EB: B | yerba mansa, lizard tail | |
| Aphyllon purpureum | CNPS-EB: C | naked broomrape | |
| 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 |
| Calystegia sepium subsp. limnophila | CNPS-EB: B | hedge bindweed | |
| Carex aquatilis var. dives | CNPS-EB: A1 | Sitka sedge | |
| Carex obnupta | CNPS-EB: B | slough sedge | |
| Castilleja rubicundula subsp. lithospermoides | CNPS-EB: B | cream sacs | |
| 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 |
| Clarkia concinna subsp. concinna | CNPS-EB: C | large godetia | |
| Collinsia sparsiflora var. sparsiflora | CNPS-EB: C | few-flowered blue-eyed Mary | |
| Cordylanthus pilosus subsp. pilosus | CNPS-EB: B | hairy bird's-beak | |
| Crocanthemum scoparium var. vulgare | (formerly Helianthemum scoparium var. vulgare) | CNPS-EB: B | peak rush-rose |
| Cucurbita foetidissima | CNPS-EB: A1 | buffalo gourd, calabazilla, calabazilla | |
| Cuscuta pacifica var. pacifica | (formerly C. salina var. major) | CNPS-EB: C | salt-marsh dodder |
| Delphinium hesperium subsp. hesperium | CNPS-EB: B | western larkspur | |
| Deschampsia cespitosa subsp. holciformis | CNPS-EB: B | tufted hairgrass | |
| Eryngium articulatum | CNPS-EB: A1 | beethistle, coyote-thistle | |
| Extriplex joaquinana | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | San Joaquin spearscale, San Joaquin saltbush | |
| Forestiera pubescens | CNPS-EB: B | desert olive | |
| Fraxinus latifolia | CNPS-EB: B | Oregon ash | |
| Gilia capitata subsp. staminea | CNPS-EB: C | blue field gilia | |
| Glycyrrhiza lepidota | CNPS-EB: C | wild licorice | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Isolepis cernua | (formerly Scirpus cernuus) | CNPS-EB: C | low club-rush |
| Juncus phaeocephalus var. paniculatus | CNPS-EB: B | panicled rush, brown-headed rush | |
| Lathyrus jepsonii var. jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T2 CNDDB Rank: S2 | delta tule pea, Delta tule pea | |
| Layia platyglossa | CNPS-EB: B | tidy-tips | |
| Lepidium latipes | CNPS-EB: B | dwarf peppergrass | |
| Lilaeopsis masonii | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G2 CNDDB Rank: S2 CESA Status: CR | Mason's lilaeopsis | |
| Melica californica | CNPS-EB: C | California melic | |
| Nuttallanthus texanus | CNPS-EB: A2 | blue toadflax | |
| Phoradendron leucarpum subsp. macrophyllum | (formerly P. serotinum subsp. macrophyllum, P. macrophyllum) | CNPS-EB: C | big leaf mistletoe |
| Phragmites australis | CNPS-EB: C | common reed | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Pluchea odorata var. odorata | CNPS-EB: B | saltmarsh fleabane | |
| Potentilla anserina subsp. pacifica | CNPS-EB: A2 | Pacific silverweed | |
| Pseudognaphalium beneolens | (formerly Gnaphalium canescens | CNPS-EB: C | fragrant everlasting |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| Rhus aromatica | (formerly R. trilobata) | CNPS-EB: C | skunk bush, skunkbrush, squawbush |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Scutellaria tuberosa | CNPS-EB: C | Dannie's skullcap | |
| Sesuvium verrucosum | CNPS-EB: B | western sea-purslane, sea-purslane | |
| Spartina foliosa | CNPS-EB: B | California cord grass | |
| Stipa lepida | CNPS-EB: C | foothill needlegrass | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Symphyotrichum subulatum var. parviflorum | (formerly Aster subulatus var. | CNPS-EB: B | slim aster |
| Trifolium oliganthum | CNPS-EB: C | few-flowered clover | |
| Triglochin maritima | CNPS-EB: C | common arrow-grass, seaside arrow-grass | |
| Triglochin striata | (T. maritima is more common) | CNPS-EB: B | three-ribbed arrow-grass |
| Agoseris heterophylla var. unknown | Agoseris heterophylla split into 2 vars. in 2011 Jepson Manual, need field work to resolve vars. | CNPS-EB: B? | annual agoseris |
| Arctostaphylos glandulosa subsp. glandulosa | CNPS-EB: B | Eastwood manzanita | |
| Bidens frondosa | CNPS-EB: B | sticktight | |
| Bidens laevis | CNPS-EB: A2 | bur-marigold | |
| Blennosperma nanum var. nanum | CNPS-EB: C | blennosperma | |
| Calochortus pulchellus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo fairy-lantern | |
| Castilleja ambigua subsp. ambigua | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5T4 CNDDB Rank: S3S4 | Johnny-nip | |
| Chloropyron molle subsp. molle | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T1 CNDDB Rank: S1 FESA Status: FE CESA Status: CR | soft salty bird's-beak, soft bird's-beak | |
| 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 | |
| Deschampsia cespitosa subsp. cespitosa | CNPS-EB: C | tufted hairgrass | |
| Festuca idahoensis | CNPS-EB: C | Idaho fescue, blue bunchgrass | |
| Festuca octoflora | CNPS-EB: A2 | sixweeks grass, slender fescue | |
| Helenium bigelovii | (H. puberulum is more common) | CNPS-EB: A2 | Bigelow's sneezeweed |
| Helianthus californicus | CNPS-EB: C | California sunflower | |
| Hoita macrostachya | CNPS-EB: B | California hemp | |
| Horkelia californica var. frondosa | CNPS-EB: B | leafy horkelia | |
| Lathyrus jepsonii var. californicus | CNPS-EB: B | buff pea | |
| Layia glandulosa | (historical-1983 but not seen | CNPS-EB: A1x | white layia |
| Lepidium oxycarpum | CNPS-EB: A2 | sharp-podded pepper-grass | |
| Linum lewisii var. lewisii | (historical-1936) | CNPS-EB: A1x | western blue flax |
| Lithophragma bolanderi | CNPS-EB: A1 | Bolander starflower | |
| Lupinus affinis | CNPS-EB: A1 | lupine | |
| Lysimachia maritima | CNPS-EB: A1 | sea-milkwort | |
| Madia exigua | CNPS-EB: C | ||
| Microseris elegans | CNPS-EB: A1 | elegant microseris | |
| Panicum capillare | CNPS-EB: A2 | witch grass | |
| Pentachaeta alsinoides | CNPS-EB: C | tiny pentachaeta | |
| Plantago maritima | CNPS-EB: A1 | Pacific seaside plantain | |
| Sabulina californica | (formerly Minuartia californica) | CNPS-EB: A1 | California sandwort |
| Senecio hydrophilus | CNPS-EB: A2 | water ragwort, alkali-marsh ragwort, alkali-marsh butterweed | |
| Sidalcea diploscypha | CNPS-EB: A1 | fringed checkerbloom, fringed sidalcea | |
| Spergularia macrotheca var. macrotheca | CNPS-EB: A2 | large-flowered sand spurry | |
| Symphyotrichum lentum | (formerly Aster lentus) | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Suisun marsh aster |
| Trifolium fucatum | CNPS-EB: B | bull clover | |
| Trifolium wormskioldii | CNPS-EB: A1 | cow clover | |
| Tropidocarpum gracile | CNPS-EB: B | slender tropidocarpum | |
| Turritis glabra | CNPS-EB: B | tower mustard |