| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Acmispon strigosus | CNPS-EB: B | strigose trefoil | |
| Allenrolfea occidentalis | CNPS-EB: C | iodine bush | |
| Amsinckia lycopsoides | CNPS-EB: C | bugloss-flowered fiddleneck, bugloss fiddleneck | |
| Anemopsis californica | CNPS-EB: B | yerba mansa, lizard tail | |
| Arctostaphylos auriculata | CNPS-EB: *A2 State CNPS: 1B.3 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo manzanita | |
| Arctostaphylos glauca | CNPS-EB: C | big-berried manzanita | |
| Astragalus asymmetricus | CNPS-EB: C | San Joaquin locoweeed | |
| Atriplex argentea var. expansa | CNPS-EB: B | silverscale | |
| Atriplex coronata var. coronata | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4T3 CNDDB Rank: S3 | crownscale | |
| Atriplex fruticulosa | CNPS-EB: B | ballscale, little oak orach, ball saltbush | |
| Blennosperma nanum var. nanum | CNPS-EB: C | blennosperma | |
| 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 |
| Brodiaea terrestris subsp. terrestris | CNPS-EB: B | dwarf brodiaea | |
| Calandrinia breweri | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | Brewer's calandrinia | |
| California macrophylla | (formerly Erodium macrophyllum | CNPS-EB: B | round-leaved filaree |
| Calochortus pulchellus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo fairy-lantern | |
| 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 |
| Cephalanthus occidentalis | CNPS-EB: A2 | button bush | |
| Clarkia epilobioides | CNPS-EB: A1 | ||
| Convolvulus simulans | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | small-flowered morning-glory | |
| Delphinium hansenii subsp. hansenii | CNPS-EB: A2 | Hansen's larkspur | |
| Delphinium hesperium subsp. hesperium | CNPS-EB: B | western larkspur | |
| Ehrendorferia chrysantha | (formerly Dicentra chrysantha) | CNPS-EB: B | golden ear-drops |
| Epilobium campestre | CNPS-EB: B | smooth boisduvalia | |
| 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 vaseyi var. vallicola | CNPS-EB: A1 | coyote-thistle, Vasey's coyote-thistle | |
| Extriplex joaquinana | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | San Joaquin spearscale, San Joaquin saltbush | |
| Frangula californica subsp. tomentella | (formerly Rhamnus t.) | CNPS-EB: C | hoary coffeeberry |
| Fremontodendron californicum | CNPS-EB: A1 | flannelbush | |
| Galium andrewsii subsp. gatense | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5T3 CNDDB Rank: S3 | phlox-leaf serpentine bedstraw, serpentine bedstraw | |
| Gilia tricolor subsp. tricolor | CNPS-EB: C | birds-eye gilia | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Helianthus gracilentus | CNPS-EB: B | slender sunflower | |
| Hesperevax caulescens | (H. sparsiflora is more common | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | hogwallow starfish |
| Hesperolinon breweri | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Brewer's western flax | |
| Holocarpha obconica | CNPS-EB: B | San Joaquin tarplant | |
| Hordeum depressum | CNPS-EB: B | low barley, alkali barley | |
| Juncus mexicanus | CNPS-EB: C | Mexican rush | |
| Lepechinia calycina | CNPS-EB: C | pitcher sage | |
| Lepidium acutidens | CNPS-EB: C | sharp-toothed pepper-grass | |
| Lepidium dictyotum | CNPS-EB: B | alkali pepper-grass | |
| Lepidium latipes | CNPS-EB: B | dwarf peppergrass | |
| Leptosiphon ciliatus | (formerly Linanthus c.) | CNPS-EB: C | whisker brush |
| Lithophragma parviflorum var. parviflorum | CNPS-EB: B | prairie star | |
| Malacothamnus fremontii | CNPS-EB: C | white-coat mallow | |
| Malacothrix clevelandii | CNPS-EB: A2 | Cleveland's malacothrix | |
| Microseris campestris | CNPS-EB: A1 | San Joaquin microseris | |
| Microseris douglasii subsp. tenella | (subsp douglasii is more common) | CNPS-EB: A2 | silver puffs |
| Monolepis nuttalliana | CNPS-EB: A1 | Nuttall's poverty weed, poverty weed | |
| 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 | |
| Myriopteris covillei | CNPS-EB: C | Coville's lip fern | |
| Navarretia pubescens | CNPS-EB: C | downy navarretia | |
| Papaver californicum | CNPS-EB: B | fire poppy | |
| Penstemon heterophyllus var. purdyi | CNPS-EB: A2 | foothill penstemon | |
| Plagiobothrys acanthocarpus | CNPS-EB: B | adobe popcornflower, adobe allocarya | |
| Plagiobothrys humistratus | CNPS-EB: A2 | low popcornflower, dwarf allocarya | |
| Plagiobothrys stipitatus var. stipitatus | (var. micranthus is more commo | CNPS-EB: C | showy great valley popcornflower, stipitate allocarya |
| Plagiobothrys tenellus | CNPS-EB: B | Pacific popcornflower, slender popcornflower | |
| Plagiobothrys trachycarpus | CNPS-EB: C | rough-nutlet popcornflower, rough-fruited allocarya | |
| Plagiobothrys undulatus | CNPS-EB: A2 | wavy-stemmed popcornflower, coast allocarya | |
| Plantago elongata | CNPS-EB: B | annual coast plantain | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Psilocarphus oregonus | CNPS-EB: A2 | Oregon woollyheads, Oregon woolly-marbles | |
| Ribes malvaceum var. malvaceum | CNPS-EB: C | chaparral currant | |
| Rorippa palustris subsp. palustris | CNPS-EB: B | marsh yellow-cress | |
| Salix gooddingii | CNPS-EB: B | Goodding's black willow | |
| Scribneria bolanderi | CNPS-EB: B | Scribner's grass | |
| Scutellaria tuberosa | CNPS-EB: C | Dannie's skullcap | |
| Sesuvium verrucosum | CNPS-EB: B | western sea-purslane, sea-purslane | |
| Spergularia macrotheca var. longistyla | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T2 CNDDB Rank: S2 | large-flowered sand spurry | |
| Stachys albens | CNPS-EB: B | white hedge nettle | |
| Stellaria nitens | CNPS-EB: C | shining chickweed | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Thysanocarpus radians | CNPS-EB: A1 | ribbed fringe pod | |
| Trifolium depauperatum var. depauperatum | (vars. amplectens and truncatu | CNPS-EB: B | dwarf sack clover |
| Zeltnera davyi | (formerly Centaurium d.) | CNPS-EB: B | Davy's centaury, conchalagua |
| 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 | |
| Alisma triviale | (formerly A. plantago-aquatica | CNPS-EB: C | water plantain |
| Allium crispum | CNPS-EB: A1 | crinkled onion | |
| Allophyllum gilioides subsp. gilioides | CNPS-EB: A2 | straggling gilia | |
| Alopecurus saccatus | CNPS-EB: B | Howell's meadow foxtail | |
| Amaranthus blitoides | CNPS-EB: C | procumbent pigweed, prostrate amaranth | |
| Amsinckia eastwoodiae | CNPS-EB: A2 | Eastwood's fiddleneck | |
| Amsinckia grandiflora | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FE CESA Status: CE | large-flowered fiddleneck | |
| Aphyllon purpureum | CNPS-EB: C | naked broomrape | |
| Arctostaphylos manzanita subsp. manzanita | CNPS-EB: A2 | common manzanita | |
| Aristida oligantha | Questionable ID at Los Vaqueros. Needs research | CNPS-EB: A1? | oldfield three-awn |
| Atriplex depressa | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | brittlescale | |
| Berula erecta | CNPS-EB: C | cutleaf water-parsnip | |
| Calochortus invenustus | CNPS-EB: A1x | plain mariposa-lily | |
| Carex senta | CNPS-EB: A1 | western rough sedge, rough sedge | |
| Carex serratodens | CNPS-EB: C | saw-toothed sedge, bifid sedge | |
| Castilleja applegatei subsp. martinii | CNPS-EB: A2 | wavy-leaved indian paintbrush | |
| Caulanthus flavescens | CNPS-EB: A2 | yellow-flowered thelypodium | |
| Cicendia quadrangularis | CNPS-EB: A2 | timwort | |
| Cicuta douglasii | CNPS-EB: A2 | water-hemlock | |
| Claytonia exigua subsp. exigua | CNPS-EB: C | common montia | |
| Claytonia rubra subsp. depressa | CNPS-EB: A1x | miner's lettuce | |
| Clematis ligusticifolia | CNPS-EB: C | western virgin's bower, virgin's bower | |
| Collinsia parviflora | CNPS-EB: B | blue-eyed Mary | |
| Collinsia sparsiflora var. sparsiflora | CNPS-EB: C | few-flowered blue-eyed Mary | |
| Crassula aquatica | CNPS-EB: B | water pygmy-weed | |
| Crocanthemum scoparium var. vulgare | (formerly Helianthemum scoparium var. vulgare) | CNPS-EB: B | peak rush-rose |
| Cyperus niger | CNPS-EB: A2 | black sedge | |
| Deinandra kelloggii | (formerly Hemizonia k.) | CNPS-EB: A2 | Kellogg's tarweed |
| Delphinium variegatum subsp. variegatum | CNPS-EB: C | royal larkspur | |
| Deschampsia danthonioides | CNPS-EB: C | annual hair grass | |
| Diplacus kelloggii | (formerly Mimulus kelloggii) | CNPS-EB: A1x | Kellogg's monkeyflower |
| Diplacus tricolor | (formerly Mimulus tricolor) | CNPS-EB: A1x | tricolor monkeyflower |
| Downingia bella | CNPS-EB: A1x | Hoover's downingia | |
| Dudleya cymosa subsp. paniculata | CNPS-EB: C | spreading dudleya | |
| Elymus multisetus | CNPS-EB: C | big squirreltail | |
| Ericameria arborescens | CNPS-EB: B | golden-fleece | |
| Erigeron philadelphicus var. philadelphicus | CNPS-EB: C | fleabane | |
| 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 | |
| Eschscholzia caespitosa | CNPS-EB: A1 | tufted poppy | |
| Festuca elmeri | CNPS-EB: A1 | Elmer's fescue | |
| Festuca idahoensis | CNPS-EB: C | Idaho fescue, blue bunchgrass | |
| Festuca octoflora | CNPS-EB: A2 | sixweeks grass, slender fescue | |
| Forestiera pubescens | CNPS-EB: B | desert olive | |
| Fraxinus dipetala | CNPS-EB: B | California ash, flowering ash | |
| Fritillaria agrestis | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | stinkbells | |
| Garrya fremontii | CNPS-EB: A1x | silk tassel bush | |
| Gilia achilleifolia subsp. unknown | CNPS-EB: C? | California gilia | |
| Gilia tricolor subsp. unknown | CNPS-EB: B? | birds-eye gilia | |
| Glycyrrhiza lepidota | CNPS-EB: C | wild licorice | |
| Gutierrezia californica | CNPS-EB: C | California matchweed | |
| Hesperevax acaulis var. ambusticola | (H. sparsiflora is more common | CNPS-EB: A1x | fire evax |
| Hesperolinon tehamense | 3 questionable ID sites. Needs field research | CNPS-EB: *A1? State CNPS: 1B.3 Global Rank: G2 CNDDB Rank: S2 | Napa western flax |
| Hosackia oblongifolia var. oblongifolia | Unclear if it occurs in the East Bay | CNPS-EB: A1? | narrow-leaved lotus |
| Isoetes howellii | CNPS-EB: A1 | Howell's quillwort | |
| Juncus ensifolius | Unclear if it occurs in East Bay | CNPS-EB: A1? | dagger rush, swordleaved rush, three-stamened rush |
| Juniperus californica | CNPS-EB: C | California juniper | |
| Koeleria macrantha | CNPS-EB: C | june grass | |
| Lasthenia ferrisiae | CNPS-EB: *A1 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | Ferris' goldfields | |
| Lasthenia fremontii | CNPS-EB: A1 | Fremont's goldfields | |
| Lasthenia glabrata subsp. glabrata | CNPS-EB: A2 | yellow-ray goldfields | |
| Lasthenia microglossa | CNPS-EB: A2 | small-ray goldfields | |
| Lasthenia minor | CNPS-EB: A1 | coastal goldfields, woolly goldfields | |
| Lasthenia platycarpha | CNPS-EB: A1 | alkali goldfields | |
| 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 | |
| Leptosiphon androsaceus | (formerly Linanthus a.) | CNPS-EB: C | common linanthus, common leptosiphon |
| Leptosiphon parviflorus | (formerly Linanthus p.) | CNPS-EB: B | small-flowered linanthus, small-flowered leptosiphon |
| Lessingia nana | CNPS-EB: A1x | dwarf lessingia | |
| Lithophragma bolanderi | CNPS-EB: A1 | Bolander starflower | |
| Ludwigia palustris | CNPS-EB: A1x | American marsh purslane | |
| Lupinus pachylobus | CNPS-EB: B | big pod lupine | |
| Melica bulbosa | CNPS-EB: A1 | onion grass | |
| Melica californica | CNPS-EB: C | California melic | |
| Microseris acuminata | CNPS-EB: A1 | Sierra Foothills microseris | |
| Monolopia major | CNPS-EB: B | cupped monolopia | |
| Myosurus sessilis | CNPS-EB: A1 | sessile mouse-tail | |
| Navarretia mellita | CNPS-EB: C | honey-scented navarretia | |
| Navarretia nigelliformis subsp. nigelliformis | CNPS-EB: *A2? State CNPS: 4.2 Global Rank: G4T3 CNDDB Rank: S3 | adobe navarretia | |
| Nemophila pedunculata | CNPS-EB: B | meadow nemophila | |
| Nicotiana quadrivalvis | CNPS-EB: B | indian tobacco | |
| Nuttallanthus texanus | CNPS-EB: A2 | blue toadflax | |
| Packera breweri | (formerly Senecio b.) | CNPS-EB: C | Brewer's ragwort, Brewer's butterweed |
| Persicaria lapathifolia | (formerly Polygonum lapathifol | CNPS-EB: B | willow weed |
| Phacelia tanacetifolia | CNPS-EB: B | tansy phacelia | |
| Pickeringia montana var. montana | CNPS-EB: C | chaparral pea | |
| Plagiobothrys canescens var. canescens | CNPS-EB: C | valley popcornflower | |
| Plagiobothrys fulvus var. campestris | CNPS-EB: B | field popcornflower, fulvous popcornflower | |
| Plagiobothrys leptocladus | CNPS-EB: A1 | alkali plagiobothrys | |
| Plectritis congesta subsp. congesta | CNPS-EB: A1x | sea blush | |
| Pleuropogon californicus var. californicus | CNPS-EB: B | semaphore grass | |
| Prunus ilicifolia subsp. ilicifolia | CNPS-EB: B | islay, holly-leafed cherry | |
| Pseudognaphalium microcephalum | (formerly Gnaphalium canescens | CNPS-EB: A1 | white everlasting |
| Psilocarphus brevissimus var. brevissimus | CNPS-EB: B | dwarf woollyheads, dwarf woolly-marbles | |
| Puccinellia simplex | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | little alkali grass | |
| Quercus berberidifolia | CNPS-EB: C | scrub oak | |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| Quercus xjolonensis | CNPS-EB: A1? | blue oak x valley oak | |
| Ranunculus canus var. canus | CNPS-EB: C | Sacramento Valley buttercup | |
| Ranunculus occidentalis var. occidentalis | CNPS-EB: B | western buttercup | |
| Rhus aromatica | (formerly R. trilobata) | CNPS-EB: B | skunk bush, skunkbrush, squawbush |
| Ribes quercetorum | CNPS-EB: A2 | oakwoods gooseberry, oak gooseberry | |
| Rigiopappus leptocladus | CNPS-EB: C | rigiopappus | |
| Rorippa curvisiliqua | CNPS-EB: B | yellow cress | |
| Rumex salicifolius var. unknown | CNPS-EB: A2? | willow dock | |
| Sagina decumbens subsp. occidentalis | (S. apetala is more common) | CNPS-EB: B | western pearlwort |
| Salix scouleriana | CNPS-EB: A2 | Scouler's willow | |
| Sedella pentandra | (formorely Parvisedum pentandr | CNPS-EB: A1 | Mount Hamilton sedella |
| Sedum spathulifolium | CNPS-EB: B | broadleaf stonecrop, Pacific stonecrop | |
| Spergularia macrotheca var. leucantha | CNPS-EB: A2 | large-flowered sand spurry | |
| Sporobolus airoides | CNPS-EB: A1 | alkali sacaton | |
| Stipa cernua | CNPS-EB: C | nodding needlegrass | |
| Suaeda nigra | (formerly S. moquinii) | CNPS-EB: B | bush seepweed |
| Toxicoscordion paniculatum | May not occur in East Bay (formerly Zigadenus paniculatum) | CNPS-EB: A1? | panicled zygadene |
| Trifolium fucatum | CNPS-EB: C | bull clover | |
| Trifolium obtusiflorum | CNPS-EB: B | clammy clover, creek clover | |
| Trifolium oliganthum | CNPS-EB: C | few-flowered clover | |
| Triglochin scilloides | CNPS-EB: C | flowering-quillwort | |
| Tropidocarpum gracile | CNPS-EB: B | slender tropidocarpum | |
| Viola purpurea subsp. quercetorum | CNPS-EB: C | mountain violet |