| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Agrostis hallii | CNPS-EB: A2 | Hall's bent grass | |
| Amsinckia lycopsoides | CNPS-EB: C | bugloss-flowered fiddleneck, bugloss fiddleneck | |
| Asclepias cordifolia | (A. californica is more common | CNPS-EB: A1 | purple milkweed |
| Astragalus asymmetricus | CNPS-EB: C | San Joaquin locoweeed | |
| Calochortus pulchellus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo fairy-lantern | |
| Calystegia sepium subsp. limnophila | CNPS-EB: B | hedge bindweed | |
| Ceanothus thyrsiflorus var. thyrsiflorus | CNPS-EB: B | blue blossom, California lilac | |
| Clarkia biloba subsp. biloba | CNPS-EB: A2 | lobed godetia | |
| Cuscuta pacifica var. pacifica | (formerly C. salina var. major) | CNPS-EB: C | salt-marsh dodder |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Danthonia californica | CNPS-EB: B-PV | California oat grass | |
| Dirca occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | western leatherwood | |
| Elymus elymoides var. elymoides | CNPS-EB: B | squirreltail | |
| Eryngium jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | ||
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Horkelia californica var. frondosa | CNPS-EB: B | leafy horkelia | |
| Isolepis carinata | (formerly Scirpus koilolepis) | CNPS-EB: A1 | dwarf club-rush |
| Isolepis cernua | (formerly Scirpus cernuus) | CNPS-EB: C | low club-rush |
| Layia gaillardioides | CNPS-EB: A2 | woodland layia | |
| Leersia oryzoides | CNPS-EB: A1 | rice cutgrass | |
| Luzula macrantha | CNPS-EB: C | ||
| Madia exigua | CNPS-EB: C | ||
| Marah oregana | CNPS-EB: B | coast man-root | |
| Myosurus minimus subsp. minimus | CNPS-EB: B-PV | common mouse-tail | |
| Nemophila parviflora var. parviflora | CNPS-EB: B | small-flowered nemophila | |
| Phragmites australis | CNPS-EB: B-PV | common reed | |
| Prunus ilicifolia subsp. ilicifolia | CNPS-EB: B | islay, holly-leafed cherry | |
| Pseudognaphalium beneolens | (formerly Gnaphalium canescens | CNPS-EB: C | fragrant everlasting |
| Quercus garryana var. garryana | CNPS-EB: B | Oregon oak | |
| Quercus lobata | CNPS-EB: C | valley oak, roble | |
| Senecio aronicoides | CNPS-EB: B-PV | rayless ragwort, California butterweed | |
| Sesuvium verrucosum | CNPS-EB: B | western sea-purslane, sea-purslane | |
| Stipa cernua | CNPS-EB: B-PV | nodding needlegrass | |
| Stipa lepida | CNPS-EB: B-PV | foothill needlegrass | |
| Stipa pulchra | CNPS-EB: B-PV | purple needlegrass | |
| Trifolium oliganthum | CNPS-EB: C | few-flowered clover | |
| 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 |
| Agoseris retrorsa | CNPS-EB: A2 | spear-leaved agoseris | |
| Anisocarpus madioides | (formerly Madia m.) | CNPS-EB: B | woodland tarweed, woodland madia |
| Calandrinia breweri | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | Brewer's calandrinia | |
| Castilleja rubicundula subsp. lithospermoides | CNPS-EB: B | cream sacs | |
| Cephalanthus occidentalis | CNPS-EB: A2 | button bush | |
| 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 | |
| Clarkia purpurea subsp. viminea | (ssp. quadrivulnera more common | CNPS-EB: A1 | large godetia |
| Crassula aquatica | CNPS-EB: B | water pygmy-weed | |
| Crocanthemum scoparium var. vulgare | (formerly Helianthemum scoparium var. vulgare) | CNPS-EB: B | peak rush-rose |
| Deschampsia danthonioides | CNPS-EB: B-PV | annual hair grass | |
| Elymus multisetus | CNPS-EB: B-PV | big squirreltail | |
| Equisetum laevigatum | CNPS-EB: A2 | smooth scouring rush | |
| Galium trifidum subsp. columbianum | CNPS-EB: A1 | trifid bedstraw | |
| Gilia tricolor subsp. diffusa | CNPS-EB: C | birds-eye gilia | |
| Glycyrrhiza lepidota | CNPS-EB: C | wild licorice | |
| Helenium bigelovii | (H. puberulum is more common) | CNPS-EB: A2 | Bigelow's sneezeweed |
| Helianthus californicus | CNPS-EB: B | California sunflower | |
| Hemizonia congesta subsp. lutescens | CNPS-EB: B | hayfield tarweed | |
| Hordeum brachyantherum subsp. californicum | (ssp. brachyantherum is more common | CNPS-EB: A1 | California barley |
| Hordeum jubatum subsp. jubatum | CNPS-EB: A2 | foxtail barley, squirreltail barley | |
| Isocoma arguta | (historical-date unknown) | CNPS-EB: *A1x State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 | Carquinez goldenbush |
| Koeleria macrantha | CNPS-EB: B-PV | june grass | |
| Lathyrus jepsonii var. californicus | CNPS-EB: B | buff pea | |
| 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-PV | tidy-tips | |
| Lepidium oxycarpum | CNPS-EB: A2 | sharp-podded pepper-grass | |
| Lupinus luteolus | CNPS-EB: A1x | butter lupine | |
| Lysimachia maritima | CNPS-EB: A1 | sea-milkwort | |
| Melica californica | CNPS-EB: B-PV | California melic | |
| Mentzelia lindleyi | CNPS-EB: B-PV | Lindley's blazing star | |
| Microseris elegans | CNPS-EB: A1 | elegant microseris | |
| Navarretia mellita | CNPS-EB: C | honey-scented navarretia | |
| Nemophila pedunculata | CNPS-EB: B | meadow nemophila | |
| Nuttallanthus texanus | CNPS-EB: A2 | blue toadflax | |
| Panicum capillare | CNPS-EB: A2 | witch grass | |
| Papaver californicum | CNPS-EB: B | fire poppy | |
| Perideridia oregana | CNPS-EB: A2 | yampah | |
| Phacelia tanacetifolia | CNPS-EB: B | tansy phacelia | |
| Plantago maritima | CNPS-EB: A1 | Pacific seaside plantain | |
| Polypodium scouleri | CNPS-EB: A1 | leather-leaf fern | |
| Potentilla anserina subsp. pacifica | CNPS-EB: A2 | Pacific silverweed | |
| Ranunculus canus var. canus | CNPS-EB: C | Sacramento Valley buttercup | |
| Rosa spithamea | CNPS-EB: C | coast ground rose, ground rose | |
| Sagina decumbens subsp. occidentalis | (S. apetala is more common) | CNPS-EB: B | western pearlwort |
| Scutellaria tuberosa | CNPS-EB: C | Dannie's skullcap | |
| Senecio hydrophilus | CNPS-EB: A2 | water ragwort, alkali-marsh ragwort, alkali-marsh butterweed | |
| Spartina foliosa | CNPS-EB: B | California cord grass | |
| Spergularia macrotheca var. macrotheca | CNPS-EB: A2 | large-flowered sand spurry | |
| Stellaria nitens | CNPS-EB: B-PV | shining chickweed | |
| Symphyotrichum subulatum var. parviflorum | (formerly Aster subulatus var. | CNPS-EB: B | slim aster |
| 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 |
| Trisetum canescens | CNPS-EB: A2 | tall trisetum | |
| Wyethia glabra | (W. helenioides is more common | CNPS-EB: C | mule ears |