| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Aphyllon tuberosum | CNPS-EB: B-PV | bulbous broom-rape | |
| Campanula exigua | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | chaparral harebell | |
| Cryptantha corollata | formerly C. decipiens. Also includes previous records for C. rattanii | CNPS-EB: A2 | COAST RANGE CRYPTANTHA |
| Festuca octoflora | CNPS-EB: A2 | sixweeks grass, slender fescue | |
| Forestiera pubescens | CNPS-EB: B-PV | desert olive | |
| Lythrum californicum | CNPS-EB: B | California loosestrife | |
| Nicotiana quadrivalvis | CNPS-EB: B | indian tobacco | |
| Quercus palmeri | CNPS-EB: A2 | Palmer's oak | |
| Rorippa curvisiliqua | CNPS-EB: B | yellow cress | |
| Trifolium dichotomum | CNPS-EB: C | branched indian clover | |
| Trifolium wormskioldii | CNPS-EB: A1 | cow clover | |
| 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 | |
| Agrostis hallii | CNPS-EB: A2 | Hall's bent grass | |
| Allium acuminatum | CNPS-EB: A1 | Hooker's onion | |
| Allium falcifolium | CNPS-EB: A2 | sickle-leaved onion | |
| Allophyllum divaricatum | CNPS-EB: B-PV | straggling gilia | |
| Allophyllum gilioides subsp. gilioides | CNPS-EB: A2 | straggling gilia | |
| Allophyllum gilioides subsp. violaceum | (ssp. gilioides is more common | CNPS-EB: B-PV | straggling gilia |
| Ancistrocarphus filagineus | CNPS-EB: C | woolly fishhooks | |
| 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 | |
| Aphyllon vallicola | CNPS-EB: B | California broom-rape | |
| Apiastrum angustifolium | CNPS-EB: C | wild celery | |
| Apocynum cannabinum | CNPS-EB: B | dogbane, Indian-hemp | |
| Aquilegia eximia | (A. formosa is more common) | CNPS-EB: A2 | Van Houtte's columbine |
| 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 crustacea subsp. crustacea | CNPS-EB: C | brittleleaf manzanita | |
| Arctostaphylos glandulosa subsp. glandulosa | CNPS-EB: A2 | Eastwood manzanita | |
| Arctostaphylos glauca | CNPS-EB: C | big-berried manzanita | |
| Arctostaphylos manzanita subsp. laevigata | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T2 CNDDB Rank: S2 | Contra Costa manzanita | |
| Arctostaphylos manzanita subsp. manzanita | CNPS-EB: A2 | common manzanita | |
| Arnica discoidea | CNPS-EB: B | rayless arnica | |
| Aspidotis californica | CNPS-EB: A2 | California lace fern | |
| Berula erecta | CNPS-EB: C | cutleaf water-parsnip | |
| Blennosperma nanum var. nanum | CNPS-EB: C | blennosperma | |
| Boechera breweri subsp. breweri | (formerly Arabis breweri) | CNPS-EB: B-PV | Brewer's rockcress |
| Brickellia californica | CNPS-EB: C | California brickellbush, California brickellia | |
| 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 | |
| Calochortus splendens | CNPS-EB: A2 | splendid mariposa-lily | |
| Calochortus umbellatus | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3? CNDDB Rank: S3? | Oakland star-tulip | |
| Calystegia malacophylla subsp. pedicellata | CNPS-EB: A2 | woolly morning-glory | |
| Camissoniopsis hirtella | CNPS-EB: A2 | small primrose | |
| Camissoniopsis intermedia | CNPS-EB: B-PV | small primrose | |
| Carex barbarae | CNPS-EB: C | whiteroot sedge, Santa Barbara sedge, St. Barbara's sedge | |
| Carex densa | CNPS-EB: B | dense sedge | |
| Carex globosa | CNPS-EB: B | round-fruited sedge | |
| Carex serratodens | CNPS-EB: C | saw-toothed sedge, bifid sedge | |
| Castilleja rubicundula subsp. lithospermoides | CNPS-EB: B | cream sacs | |
| Caulanthus flavescens | CNPS-EB: A2 | yellow-flowered thelypodium | |
| Chenopodium berlandieri var. unknown | Split into 2 varieties. Sites need to be surveyed to determine vars.. | CNPS-EB: A2? | pitseed goosefoot |
| Cirsium cymosum var. cymosum | CNPS-EB: B-PV | peregrine thistle | |
| Cirsium douglasii var. douglasii | CNPS-EB: A1 | swamp thistle | |
| Cirsium occidentale var. californicum | (var. venustum is more common) | CNPS-EB: A2 | California thistle |
| Clarkia biloba subsp. biloba | CNPS-EB: A2 | lobed godetia | |
| Clarkia concinna subsp. concinna | CNPS-EB: C | large godetia | |
| Clarkia gracilis subsp. gracilis | CNPS-EB: C | summer's darling | |
| Clarkia modesta | CNPS-EB: A2 | modest clarkia | |
| Claytonia exigua subsp. exigua | CNPS-EB: C | common montia | |
| Claytonia exigua subsp. glauca | (ssp. exigua is more common) | CNPS-EB: A1x | claytonia |
| Claytonia gypsophiloides | CNPS-EB: B | coast range montia | |
| Clematis ligusticifolia | CNPS-EB: C | western virgin's bower, virgin's bower | |
| Collinsia tinctoria | CNPS-EB: A2 | iodine collinsia | |
| Collomia diversifolia | CNPS-EB: *A1 State CNPS: 4.3 Global Rank: G4 CNDDB Rank: S4 | serpentine collomia | |
| Cordylanthus pilosus subsp. pilosus | CNPS-EB: B | hairy bird's-beak | |
| Cornus glabrata | CNPS-EB: A1 | brown dogwood | |
| Crassula aquatica | CNPS-EB: B | water pygmy-weed | |
| Crocanthemum scoparium var. vulgare | (formerly Helianthemum scoparium var. vulgare) | CNPS-EB: B | peak rush-rose |
| Cryptantha clevelandii var. florosa | CNPS-EB: A2 | Cleveland's cryptantha | |
| Cryptantha juniperensis | (formerly C. nevadensis var. rigida) | CNPS-EB: A1 | Nevada cryptantha |
| Cryptantha micromeres | CNPS-EB: A2 | minute-flowered cryptantha | |
| Cryptantha microstachys | CNPS-EB: A2 | Tejon cryptantha | |
| Cryptantha muricata var. muricata | CNPS-EB: A1 | showy prickly-nut cryptantha | |
| Cryptantha torreyana var. pumila | CNPS-EB: B | Torrey's cryptantha | |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Cyperus niger | CNPS-EB: A2 | black sedge | |
| 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 nudicaule | CNPS-EB: C | red larkspur, orange larkspur | |
| Delphinium variegatum subsp. variegatum | CNPS-EB: C | royal larkspur | |
| Dendromecon rigida | CNPS-EB: A2 | bush poppy | |
| Deschampsia cespitosa subsp. holciformis | CNPS-EB: B | tufted hairgrass | |
| Diplacus bolanderi | (formerly Mimulus b.) | CNPS-EB: A1 | Bolander's monkeyflower |
| Diplacus douglasii | (formerly Mimulus d.) | CNPS-EB: A2 | Douglas monkeyflower |
| Diplacus rattanii | (formerly Mimulus rattanii) | CNPS-EB: A2 | Rattan monkeyflower |
| Dudleya cymosa subsp. paniculata | CNPS-EB: B-PV | spreading dudleya | |
| Ehrendorferia chrysantha | (formerly Dicentra chrysantha) | CNPS-EB: B | golden ear-drops |
| Elatine californica | CNPS-EB: A1 | waterwort | |
| Elymus elymoides var. elymoides | CNPS-EB: B | squirreltail | |
| Elymus multisetus | CNPS-EB: B-PV | big squirreltail | |
| Elymus trachycaulus subsp. trachycaulus | CNPS-EB: A1 | slender wheat grass | |
| Epilobium campestre | CNPS-EB: B | smooth boisduvalia | |
| Epilobium torreyi | CNPS-EB: A2 | narrow-leaved boisduvalia | |
| Epipactis gigantea | CNPS-EB: A1 | stream orchid | |
| Equisetum laevigatum | CNPS-EB: A2 | smooth scouring rush | |
| Ericameria arborescens | CNPS-EB: B-PV | golden-fleece | |
| Erigeron petrophilus var. petrophilus | CNPS-EB: B | rock daisy | |
| Eriogonum gracile var. gracile | CNPS-EB: C | slender woolly wild buckwheat, slender buckwheat | |
| Eriogonum inerme var. inerme | CNPS-EB: A1 | unarmed buckwheat | |
| Eriogonum luteolum var. luteolum | CNPS-EB: A2 | golden-carpet wild buckwheat, golden carpet | |
| 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 |
| 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 | |
| Eryngium castrense | CNPS-EB: A2 | great valley coyote-thistle, Vasey's coyote-thistle | |
| Erythranthe latidens | (formerly Mimulus latidens) | CNPS-EB: A1 | broad-toothed monkeyflower |
| Eschscholzia caespitosa | CNPS-EB: A1 | tufted poppy | |
| Euphorbia ocellata subsp. ocellata | CNPS-EB: B | valley spurge | |
| Euphorbia serpillifolia subsp. serpillifolia | CNPS-EB: C | thyme-leaved spurge | |
| Festuca californica | CNPS-EB: B-PV | California fescue | |
| Festuca elmeri | CNPS-EB: A1 | Elmer's fescue | |
| Frangula californica subsp. tomentella | (formerly Rhamnus t.) | CNPS-EB: B | hoary coffeeberry |
| Fraxinus dipetala | CNPS-EB: B | California ash, flowering ash | |
| Galium andrewsii subsp. gatense | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5T3 CNDDB Rank: S3 | phlox-leaf serpentine bedstraw, serpentine bedstraw | |
| Garrya elliptica | CNPS-EB: B-PV | silk tassel bush | |
| Garrya flavescens | CNPS-EB: A2 | silk tassel bush | |
| Githopsis diffusa subsp. robusta | CNPS-EB: A2 | southern bluecup | |
| Githopsis specularioides | CNPS-EB: B | common bluecup | |
| Glycyrrhiza lepidota | CNPS-EB: C | wild licorice | |
| Gruvelia pusilla | (formerly Pectocarya pusilla) | CNPS-EB: B | little pectocarya |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Helianthus californicus | CNPS-EB: B | California sunflower | |
| Helianthus gracilentus | CNPS-EB: B | slender sunflower | |
| Hesperolinon breweri | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Brewer's western flax | |
| Hesperolinon californicum | CNPS-EB: B-PV | California dwarf flax | |
| Hesperolinon micranthum | CNPS-EB: A2 | small-flowered dwarf flax | |
| Heterocodon rariflorum | CNPS-EB: A1 | heterocodon | |
| Heterotheca sessiliflora subsp. bolanderi | (H. s. ssp. echioides is more | CNPS-EB: C | Bolander goldenaster |
| Heterotheca sessiliflora var. bolanderioides | CNPS-EB: A1x | golden aster | |
| Hieracium albiflorum | CNPS-EB: C | white hawkweed | |
| Hoita orbicularis | (historical-1936) | CNPS-EB: A1x | round-leaved psoralea |
| Horkelia californica var. elata | CNPS-EB: A2 | tall horkelia | |
| Horkelia californica var. frondosa | CNPS-EB: B | leafy horkelia | |
| Hosackia crassifolia var. crassifolia | CNPS-EB: A2 | broad-leaved lotus | |
| Hydrophyllum occidentale | CNPS-EB: A1 | western waterleaf | |
| Hypericum scouleri | CNPS-EB: A1x | Scouler's st. john's wort, Scouler's St. John's wort | |
| Isoetes howellii | CNPS-EB: A1 | Howell's quillwort | |
| Juncus mexicanus | CNPS-EB: C | Mexican rush | |
| Juncus phaeocephalus var. paniculatus | CNPS-EB: B | panicled rush, brown-headed rush | |
| Juniperus californica | CNPS-EB: C | California juniper | |
| Keckiella corymbosa | CNPS-EB: C | redwood penstemon | |
| Koeleria macrantha | CNPS-EB: B-PV | june grass | |
| Lasthenia glaberrima | CNPS-EB: B | smooth goldfields | |
| Lasthenia glabrata subsp. glabrata | CNPS-EB: A2 | yellow-ray goldfields | |
| Lasthenia microglossa | CNPS-EB: A2 | small-ray goldfields | |
| Layia gaillardioides | CNPS-EB: A2 | woodland layia | |
| Layia hieracioides | CNPS-EB: B-PV | tall layia | |
| Layia platyglossa | CNPS-EB: B-PV | tidy-tips | |
| Lepechinia calycina | CNPS-EB: C | pitcher sage | |
| Lepidium latipes | CNPS-EB: B-PV | dwarf peppergrass | |
| Lepidium oblongum | (historical-1937) | CNPS-EB: A1x | wayside pepper-grass |
| Leptosiphon ambiguus | (formerly Linanthus a.) | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | serpentine leptosiphon, serpentine linanthus |
| Leptosiphon androsaceus | (formerly Linanthus a.) | CNPS-EB: C | common linanthus, common leptosiphon |
| Leptosiphon ciliatus | (formerly Linanthus c.) | CNPS-EB: C | whisker brush |
| Leptosiphon grandiflorus | (formerly Linanthus g.) | CNPS-EB: *A1x State CNPS: 4.2 Global Rank: G3G4 CNDDB Rank: S3S4 | large-flowered leptosiphon, large-flowered linanthus |
| Leptosiphon pygmaeus subsp. continentalis | (formerly Linanthus p. ssp. c. | CNPS-EB: B | pygmy linanthus, pygmy leptosiphon |
| Lupinus pachylobus | CNPS-EB: B | big pod lupine | |
| Madia anomala | CNPS-EB: A1x | plump-seeded madia | |
| Malacothamnus fremontii var. fremontii | CNPS-EB: B-PV | white-coat mallow | |
| Malacothamnus hallii | (M. fasciculatus in Jepson Man | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Hall's bush-mallow |
| Malacothrix clevelandii | CNPS-EB: A2 | Cleveland's malacothrix | |
| Malacothrix floccifera | CNPS-EB: C | woolly malacothrix | |
| Melica bulbosa | CNPS-EB: A1 | onion grass | |
| Melica californica | CNPS-EB: B-PV | California melic | |
| Mentzelia dispersa | CNPS-EB: A2 | Nada stick-leaf | |
| Mentzelia micrantha | CNPS-EB: A2 | small-flowered stick-leaf | |
| Microseris douglasii subsp. tenella | (subsp douglasii is more common) | CNPS-EB: A2 | silver puffs |
| Microseris elegans | CNPS-EB: A1 | elegant microseris | |
| Microseris sylvatica | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | sylvan microseris | |
| Monardella douglasii | CNPS-EB: A2 | fenestra monardella, Fenestra monardella | |
| Monolopia gracilens | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G3 CNDDB Rank: S3 | woodland woollythreads, woodland monolopia | |
| Monolopia lanceolata | CNPS-EB: A1 | common hillside daisy, common monolopia | |
| Monolopia major | CNPS-EB: B | cupped 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 mellita | CNPS-EB: C | honey-scented navarretia | |
| Navarretia pubescens | CNPS-EB: C | downy navarretia | |
| Nemophila pedunculata | CNPS-EB: B | meadow nemophila | |
| Nuttallanthus texanus | CNPS-EB: A2 | blue toadflax | |
| Oenothera elata subsp. hookeri | CNPS-EB: C | evening-primrose | |
| Osmorhiza brachypoda | CNPS-EB: C | California cicely | |
| Panicum capillare | CNPS-EB: A2 | witch grass | |
| Papaver californicum | CNPS-EB: B | fire poppy | |
| Pediomelum californicum | CNPS-EB: A2 | indian breadroot | |
| Penstemon heterophyllus var. heterophyllus | CNPS-EB: B | chaparral penstemon | |
| Penstemon heterophyllus var. purdyi | CNPS-EB: A2 | foothill penstemon | |
| Pentachaeta alsinoides | CNPS-EB: B-PV | tiny pentachaeta | |
| Pentachaeta exilis subsp. exilis | CNPS-EB: A1 | meager pentachaeta | |
| Perideridia californica | CNPS-EB: C | California yampah | |
| Perideridia oregana | CNPS-EB: A2 | yampah | |
| Phacelia breweri | CNPS-EB: B-PV | Brewer's phacelia | |
| Phacelia divaricata | CNPS-EB: B-PV | divaricate phacelia | |
| Phacelia phacelioides | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo phacelia | |
| Phacelia rattanii | CNPS-EB: B | Rattan's phacelia | |
| Phacelia tanacetifolia | CNPS-EB: B | tansy phacelia | |
| Phoradendron leucarpum subsp. macrophyllum | (formerly P. serotinum subsp. macrophyllum, P. macrophyllum) | CNPS-EB: C | big leaf mistletoe |
| Pickeringia montana var. montana | CNPS-EB: B-PV | chaparral pea | |
| Pinus attenuata | CNPS-EB: A1 | knobcone pine | |
| Pinus coulteri | CNPS-EB: B-PV | Coulter pine | |
| Plagiobothrys acanthocarpus | CNPS-EB: B-PV | adobe popcornflower, adobe allocarya | |
| Plagiobothrys tenellus | CNPS-EB: B | Pacific popcornflower, slender popcornflower | |
| Plantago elongata | CNPS-EB: B-PV | annual coast plantain | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Poa howellii | CNPS-EB: A2 | Howell's bluegrass | |
| Pogogyne douglasii | (historical-1940) | CNPS-EB: A1x | Douglas' beardstyle, Douglas pogogyne |
| Pogogyne zizyphoroides | CNPS-EB: A2 | Sacramento beardstyle | |
| Prunus subcordata | CNPS-EB: C | Pacific plum, Sierra plum | |
| Quercus berberidifolia | CNPS-EB: C | scrub oak | |
| Quercus durata var. durata | CNPS-EB: B | leather oak | |
| Quercus garryana var. garryana | CNPS-EB: B | Oregon oak | |
| Quercus lobata | CNPS-EB: C | valley oak, roble | |
| Quercus wislizeni var. frutescens | CNPS-EB: C | shrubby interior live oak | |
| Ranunculus canus var. canus | CNPS-EB: C | Sacramento Valley buttercup | |
| Rhus aromatica | (formerly R. trilobata) | CNPS-EB: C | skunk bush, skunkbrush, squawbush |
| Ribes malvaceum var. malvaceum | CNPS-EB: C | chaparral currant | |
| Rigiopappus leptocladus | CNPS-EB: C | rigiopappus | |
| Romanzoffia californica | CNPS-EB: A1 | Suksdorf's romanzoffia | |
| Rosa spithamea | CNPS-EB: C | coast ground rose, ground rose | |
| Rumex salicifolius | (formerly R. salicifolius var. salicifolius) | CNPS-EB: B | willow dock |
| Sagina decumbens subsp. occidentalis | (S. apetala is more common) | CNPS-EB: B | western pearlwort |
| Salvia spathacea | CNPS-EB: A1 | California hummingbird sage, hummingbird sage | |
| Sanicula saxatilis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 CESA Status: CR | rock sanicle | |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Scutellaria tuberosa | CNPS-EB: C | Dannie's skullcap | |
| Sedella pentandra | (formorely Parvisedum pentandr | CNPS-EB: A1 | Mount Hamilton sedella |
| Sedum radiatum subsp. radiatum | (formerly S. radiatum) | CNPS-EB: A2 | coast range stonecrop, star-fruited stonecrop |
| Sedum spathulifolium | CNPS-EB: B | broadleaf stonecrop, Pacific stonecrop | |
| Senecio aronicoides | CNPS-EB: B-PV | rayless ragwort, California butterweed | |
| Silene laciniata subsp. californica | (formerly Silene c.) | CNPS-EB: C | Indian pink, California pink, California Indian pink |
| Silene verecunda | CNPS-EB: A1 | San Francisco campion, Cuyamaca campion | |
| Stebbinsoseris heterocarpa | CNPS-EB: C | grassland silverpuffs, derived microseris | |
| Stellaria nitens | CNPS-EB: B-PV | shining chickweed | |
| Stipa lepida | CNPS-EB: B-PV | foothill needlegrass | |
| Stipa pulchra | CNPS-EB: B-PV | purple needlegrass | |
| 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 | |
| Symphyotrichum lanceolatum var. hesperium | (formerly Aster lanceolatus ss | CNPS-EB: A2 | marsh aster |
| Tellima grandiflora | CNPS-EB: C | fringe cups | |
| Tetrapteron graciliflorum | CNPS-EB: B-PV | hill sun cup | |
| Thysanocarpus laciniatus | CNPS-EB: B | lacepod | |
| Tonella tenella | CNPS-EB: B-PV | small-flowered tonella | |
| Trifolium fucatum | CNPS-EB: B | bull 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 | |
| Triodanis biflora | CNPS-EB: A2 | Venus' looking-glass | |
| 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 | |
| Viola purpurea subsp. quercetorum | CNPS-EB: C | mountain violet | |
| Viola sheltonii | CNPS-EB: A2 | Shelton's violet, fan violet | |
| Wyethia glabra | (W. helenioides is more common | CNPS-EB: C | mule ears |
| Zeltnera davyi | (formerly Centaurium d.) | CNPS-EB: B | Davy's centaury, conchalagua |