| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Alisma triviale | (formerly A. plantago-aquatica | CNPS-EB: C | water plantain |
| Allophyllum divaricatum | CNPS-EB: B-PV | straggling gilia | |
| Allophyllum gilioides subsp. gilioides | CNPS-EB: A2 | straggling gilia | |
| Androsace elongata subsp. acuta | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5?T3T4 CNDDB Rank: S3S4 | California androsace | |
| Antirrhinum kelloggii | CNPS-EB: A1 | lax snapdragon | |
| Aphyllon purpureum | CNPS-EB: C | naked broomrape | |
| Apiastrum angustifolium | CNPS-EB: C | wild celery | |
| Arctostaphylos manzanita subsp. laevigata | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T2 CNDDB Rank: S2 | Contra Costa manzanita | |
| Aspidotis californica | CNPS-EB: A2 | California lace fern | |
| Boechera breweri subsp. breweri | (formerly Arabis breweri) | CNPS-EB: B-PV | Brewer's rockcress |
| Calandrinia breweri | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | Brewer's calandrinia | |
| Calochortus pulchellus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo fairy-lantern | |
| Camissoniopsis intermedia | CNPS-EB: B-PV | small primrose | |
| Campanula griffinii | CNPS-EB: A1 | Griffin's campanula | |
| Carex densa | CNPS-EB: B | dense sedge | |
| Carex nudata | CNPS-EB: B | torrent sedge | |
| Carex obnupta | CNPS-EB: B | slough sedge | |
| Carex serratodens | CNPS-EB: C | saw-toothed sedge, bifid sedge | |
| Castilleja applegatei subsp. martinii | CNPS-EB: A2 | wavy-leaved indian paintbrush | |
| Cicendia quadrangularis | CNPS-EB: A2 | timwort | |
| Cirsium occidentale var. californicum | (var. venustum is more common) | CNPS-EB: A2 | California thistle |
| Clarkia biloba subsp. biloba | CNPS-EB: A2 | lobed godetia | |
| Clematis ligusticifolia | CNPS-EB: C | western virgin's bower, virgin's bower | |
| Cornus glabrata | CNPS-EB: A1 | brown dogwood | |
| Cryptantha corollata | formerly C. decipiens. Also includes previous records for C. rattanii | CNPS-EB: A2 | COAST RANGE CRYPTANTHA |
| Cryptantha juniperensis | (formerly C. nevadensis var. rigida) | CNPS-EB: A1 | Nevada cryptantha |
| Cryptantha microstachys | CNPS-EB: A2 | Tejon cryptantha | |
| Cryptantha muricata var. muricata | CNPS-EB: A1 | showy prickly-nut cryptantha | |
| Deschampsia danthonioides | CNPS-EB: B-PV | annual hair grass | |
| Dudleya cymosa subsp. paniculata | CNPS-EB: B-PV | spreading dudleya | |
| Elatine brachysperma | CNPS-EB: A1 | waterwort | |
| Epilobium campestre | CNPS-EB: B | smooth boisduvalia | |
| Eriogonum covilleanum | CNPS-EB: A2 | Coville's wild buckwheat, Coville's eriogonum | |
| Eriogonum umbellatum var. bahiiforme | Previously mis-recorded as var. smallianum which does not occur in the East Bay | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5T3 CNDDB Rank: S3 | Small's sulphur flower, bay buckwheat |
| Eryngium castrense | CNPS-EB: A2 | great valley coyote-thistle, Vasey's coyote-thistle | |
| Gilia capitata subsp. capitata | CNPS-EB: A1 | blue field gilia | |
| Gilia tricolor subsp. diffusa | CNPS-EB: C | birds-eye gilia | |
| Githopsis diffusa subsp. robusta | CNPS-EB: A2 | southern bluecup | |
| Gratiola ebracteata | CNPS-EB: A1 | bractless hedge-hyssop | |
| Helianthus californicus | CNPS-EB: B | California sunflower | |
| Hesperolinon breweri | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Brewer's western flax | |
| Hesperolinon micranthum | CNPS-EB: A2 | small-flowered dwarf flax | |
| Horkelia californica var. frondosa | CNPS-EB: B | leafy horkelia | |
| Keckiella corymbosa | CNPS-EB: C | redwood penstemon | |
| Lepidium latipes | CNPS-EB: B-PV | dwarf peppergrass | |
| Leptosiphon ambiguus | (formerly Linanthus a.) | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | serpentine leptosiphon, serpentine linanthus |
| Leptosiphon bolanderi | (formerly Linanthus b.) | CNPS-EB: A1 | Bolander's linanthus, Bolander's leptosiphon |
| Lupinus pachylobus | CNPS-EB: B | big pod lupine | |
| Malacothrix clevelandii | CNPS-EB: A2 | Cleveland's malacothrix | |
| Monolopia gracilens | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G3 CNDDB Rank: S3 | woodland woollythreads, woodland monolopia | |
| Montia fontana | CNPS-EB: B-PV | water chickweed, blinks, water chickweed | |
| Myriopteris covillei | CNPS-EB: B-PV | Coville's lip fern | |
| Myriopteris intertexta | CNPS-EB: B | coastal lip fern | |
| Navarretia heterandra | CNPS-EB: *A1 State CNPS: 4.3 Global Rank: G4 CNDDB Rank: S4 | Tehama navarretia | |
| Navarretia pubescens | CNPS-EB: C | downy navarretia | |
| Osmorhiza brachypoda | CNPS-EB: C | California cicely | |
| Papaver californicum | CNPS-EB: B | fire poppy | |
| Pentachaeta alsinoides | CNPS-EB: B-PV | tiny pentachaeta | |
| Perideridia californica | CNPS-EB: C | California yampah | |
| Phacelia breweri | CNPS-EB: B-PV | Brewer's phacelia | |
| Pickeringia montana var. montana | CNPS-EB: B-PV | chaparral pea | |
| Piperia elongata | CNPS-EB: C | chaparral orchid, wood rein-orchid, elongate piperia | |
| Piperia michaelii | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | Michael's rein-orchid | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Ribes malvaceum var. malvaceum | CNPS-EB: C | chaparral currant | |
| Rorippa curvisiliqua | CNPS-EB: B | yellow cress | |
| Rorippa palustris subsp. palustris | CNPS-EB: B | marsh yellow-cress | |
| Sanicula saxatilis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 CESA Status: CR | rock sanicle | |
| Silene laciniata subsp. californica | (formerly Silene c.) | CNPS-EB: C | Indian pink, California pink, California Indian pink |
| Stebbinsoseris heterocarpa | CNPS-EB: C | grassland silverpuffs, derived microseris | |
| Streptanthus albidus subsp. peramoenus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T2 CNDDB Rank: S2 | most beautiful jewel-flower | |
| Streptanthus hispidus | CNPS-EB: *A2 State CNPS: 1B.3 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo jewelflower | |
| Thysanocarpus laciniatus | CNPS-EB: B | lacepod | |
| Trifolium depauperatum var. depauperatum | (vars. amplectens and truncatu | CNPS-EB: B | dwarf sack clover |
| Trifolium obtusiflorum | CNPS-EB: B | clammy clover, creek clover | |
| Trifolium oliganthum | CNPS-EB: C | few-flowered clover | |
| Trifolium olivaceum | CNPS-EB: C | olive clover | |
| Viola purpurea subsp. quercetorum | CNPS-EB: C | mountain violet | |
| Zeltnera davyi | (formerly Centaurium d.) | CNPS-EB: B | Davy's centaury, conchalagua |
| Agoseris heterophylla var. heterophylla | CNPS-EB: C | ||
| 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 | |
| Amaranthus blitoides | CNPS-EB: C | procumbent pigweed, prostrate amaranth | |
| Amaranthus californicus | CNPS-EB: B | Californian amaranth | |
| Ancistrocarphus filagineus | CNPS-EB: C | woolly fishhooks | |
| Aphyllon californicum subsp. jepsonii | CNPS-EB: A1 | Jepson broom-rape | |
| Arbutus menziesii | CNPS-EB: C | Pacific madrone | |
| Arctostaphylos auriculata | CNPS-EB: *A2 State CNPS: 1B.3 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo manzanita | |
| Arctostaphylos glandulosa subsp. glandulosa | CNPS-EB: A2 | Eastwood manzanita | |
| Arctostaphylos glauca | CNPS-EB: C | big-berried manzanita | |
| Arctostaphylos manzanita subsp. manzanita | CNPS-EB: A2 | common manzanita | |
| Berula erecta | CNPS-EB: C | cutleaf water-parsnip | |
| Blennosperma nanum var. nanum | CNPS-EB: C | blennosperma | |
| Brickellia californica | CNPS-EB: C | California brickellbush, California brickellia | |
| Carex barbarae | CNPS-EB: C | whiteroot sedge, Santa Barbara sedge, St. Barbara's sedge | |
| Clarkia concinna subsp. concinna | CNPS-EB: C | large godetia | |
| Clarkia purpurea subsp. purpurea | (ssp. quadrivulnera is more co | CNPS-EB: A2 | purple clarkia |
| Claytonia exigua subsp. exigua | CNPS-EB: C | common montia | |
| Cordylanthus pilosus subsp. pilosus | CNPS-EB: B | hairy bird's-beak | |
| Crassula aquatica | CNPS-EB: B | water pygmy-weed | |
| Cryptantha clevelandii var. florosa | CNPS-EB: A2 | Cleveland's cryptantha | |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Datisca glomerata | CNPS-EB: C | durango root | |
| Delphinium californicum subsp. californicum | CNPS-EB: B | coast larkspur, California larkspur | |
| Delphinium hesperium subsp. hesperium | CNPS-EB: B | western larkspur | |
| Delphinium variegatum subsp. variegatum | CNPS-EB: C | royal larkspur | |
| Diplacus douglasii | (formerly Mimulus d.) | CNPS-EB: A2 | Douglas monkeyflower |
| Elatine californica | CNPS-EB: A1 | waterwort | |
| Eleocharis acicularis var. acicularis | CNPS-EB: B | needle spike-rush | |
| Elymus multisetus | CNPS-EB: B-PV | big squirreltail | |
| Ericameria arborescens | CNPS-EB: B-PV | golden-fleece | |
| Erigeron philadelphicus var. philadelphicus | CNPS-EB: C | fleabane | |
| Eriogonum luteolum var. luteolum | CNPS-EB: A2 | golden-carpet wild buckwheat, golden carpet | |
| Eriophyllum jepsonii | CNPS-EB: *A2 State CNPS: 4.3 Global Rank: G3 CNDDB Rank: S3 | Jepson's woolly sunflower | |
| Eriophyllum lanatum var. achilleoides | CNPS-EB: C | woolly sunflower | |
| Euphorbia serpillifolia subsp. serpillifolia | CNPS-EB: C | thyme-leaved spurge | |
| Festuca californica | CNPS-EB: B-PV | California fescue | |
| Frangula californica subsp. tomentella | (formerly Rhamnus t.) | CNPS-EB: B | hoary coffeeberry |
| Galium andrewsii subsp. gatense | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5T3 CNDDB Rank: S3 | phlox-leaf serpentine bedstraw, serpentine bedstraw | |
| Hesperolinon californicum | CNPS-EB: B-PV | California dwarf flax | |
| Isoetes howellii | CNPS-EB: A1 | Howell's quillwort | |
| Juncus phaeocephalus var. paniculatus | CNPS-EB: B | panicled rush, brown-headed rush | |
| Juniperus californica | CNPS-EB: C | California juniper | |
| Koeleria macrantha | CNPS-EB: B-PV | june grass | |
| Layia hieracioides | CNPS-EB: B-PV | tall layia | |
| Lepechinia calycina | CNPS-EB: C | pitcher sage | |
| Leptosiphon ciliatus | (formerly Linanthus c.) | CNPS-EB: C | whisker brush |
| Lythrum californicum | CNPS-EB: B | California loosestrife | |
| Malacothrix floccifera | CNPS-EB: C | woolly malacothrix | |
| Melica californica | CNPS-EB: B-PV | California melic | |
| Phacelia divaricata | CNPS-EB: B-PV | divaricate phacelia | |
| Plagiobothrys tenellus | CNPS-EB: B | Pacific popcornflower, slender popcornflower | |
| Poa howellii | CNPS-EB: A2 | Howell's bluegrass | |
| Quercus wislizeni var. frutescens | CNPS-EB: C | shrubby interior live oak | |
| Ranunculus canus var. canus | CNPS-EB: C | Sacramento Valley buttercup | |
| Ranunculus lobbii | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S3 | Lobb's aquatic buttercup | |
| Rigiopappus leptocladus | CNPS-EB: C | rigiopappus | |
| Rosa spithamea | CNPS-EB: C | coast ground rose, ground rose | |
| Sabulina pusilla | (formerly Minuartia pusilla) | CNPS-EB: A1 | annual sandwort, least sandwort |
| Scutellaria tuberosa | CNPS-EB: C | Dannie's skullcap | |
| Sedella pentandra | (formorely Parvisedum pentandr | CNPS-EB: A1 | Mount Hamilton sedella |
| Sedum spathulifolium | CNPS-EB: B | broadleaf stonecrop, Pacific stonecrop | |
| Stellaria nitens | CNPS-EB: B-PV | shining chickweed | |
| Stipa pulchra | CNPS-EB: B-PV | purple needlegrass | |
| Triodanis biflora | CNPS-EB: A2 | Venus' looking-glass | |
| Trisetum canescens | CNPS-EB: A2 | tall trisetum | |
| Tropidocarpum gracile | CNPS-EB: B-PV | slender tropidocarpum | |
| Viburnum ellipticum | CNPS-EB: *A2 State CNPS: 2B.3 Global Rank: G4G5 CNDDB Rank: S3 | oval-leaved viburnum |