| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Acaena californica | (formerly A. pinnatifida var. californica) | CNPS-EB: C | California acaena |
| Agoseris heterophylla var. heterophylla | CNPS-EB: C | ||
| Agrostis hallii | CNPS-EB: A2 | Hall's bent grass | |
| Alisma triviale | (formerly A. plantago-aquatica | CNPS-EB: C | water plantain |
| Amaranthus blitoides | CNPS-EB: C | procumbent pigweed, prostrate amaranth | |
| Amaranthus californicus | CNPS-EB: B | Californian amaranth | |
| Amsinckia lunaris | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G3 CNDDB Rank: S3 | bent-flowered fiddleneck | |
| Anisocarpus madioides | (formerly Madia m.) | CNPS-EB: B | woodland tarweed, woodland madia |
| Aphyllon epigalium subsp. epigalium | CNPS-EB: A2 | ||
| Aphyllon vallicola | CNPS-EB: B | California broom-rape | |
| Arbutus menziesii | CNPS-EB: B | Pacific madrone | |
| Arctostaphylos crustacea subsp. crustacea | CNPS-EB: C | brittleleaf manzanita | |
| Arctostaphylos glandulosa subsp. glandulosa | CNPS-EB: B | Eastwood manzanita | |
| Arnica discoidea | CNPS-EB: B | rayless arnica | |
| Asclepias speciosa | (A. californica is more common | CNPS-EB: B | showy milkweed, milkweed |
| Bidens frondosa | CNPS-EB: B | sticktight | |
| Bolboschoenus maritimus subsp. paludosus | (formerly Scirpus m.) | CNPS-EB: C | bulrush |
| Calochortus pulchellus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo fairy-lantern | |
| Calochortus umbellatus | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3? CNDDB Rank: S3? | Oakland star-tulip | |
| Carex gracilior | CNPS-EB: A1 | slender sedge | |
| Carex lenticularis var. lipocarpa | CNPS-EB: A1 | few-ribbed sedge | |
| Carex nebrascensis | CNPS-EB: B | Nebraska sedge | |
| Carex obnupta | CNPS-EB: B | slough sedge | |
| Carex subbracteata | CNPS-EB: B | small-bracted sedge | |
| Castilleja rubicundula subsp. lithospermoides | CNPS-EB: B | cream sacs | |
| Castilleja wightii | CNPS-EB: B | Wight's indian paintbrush | |
| Cicuta douglasii | CNPS-EB: A2 | water-hemlock | |
| Cirsium cymosum var. cymosum | CNPS-EB: C | peregrine thistle | |
| Cirsium remotifolium var. odontolepis | CNPS-EB: A1 | remote-leaved 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 purpurea subsp. purpurea | (ssp. quadrivulnera is more co | CNPS-EB: A2 | purple clarkia |
| Claytonia exigua subsp. exigua | CNPS-EB: C | common montia | |
| Collinsia sparsiflora var. sparsiflora | CNPS-EB: C | few-flowered blue-eyed Mary | |
| Cordylanthus pilosus subsp. pilosus | CNPS-EB: B | hairy bird's-beak | |
| Cornus sericea subsp. unknown | CNPS-EB: C? | American dogwood | |
| Cuscuta californica var. californica | CNPS-EB: A2 | California dodder | |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Cyperus erythrorhizos | CNPS-EB: B | red-rooted cyperus | |
| Danthonia californica | CNPS-EB: B | California oat grass | |
| Delphinium nudicaule | CNPS-EB: C | red larkspur, orange larkspur | |
| Dendromecon rigida | CNPS-EB: A2 | bush poppy | |
| Deschampsia cespitosa subsp. cespitosa | CNPS-EB: C | tufted hairgrass | |
| Deschampsia elongata | CNPS-EB: C | slender hair grass | |
| Dirca occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | western leatherwood | |
| Dudleya cymosa subsp. cymosa | (ssp. paniculata is more common) | CNPS-EB: A1 | spreading dudleya |
| Echinodorus berteroi | CNPS-EB: A2 | burhead | |
| Eclipta prostrata | CNPS-EB: A1 | false daisy | |
| Eleocharis acicularis var. acicularis | CNPS-EB: B | needle spike-rush | |
| Epilobium campestre | CNPS-EB: B | smooth boisduvalia | |
| Eragrostis hypnoides | CNPS-EB: A2 | ||
| Eryngium jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | ||
| Eschscholzia caespitosa | CNPS-EB: A1 | tufted poppy | |
| Euphorbia serpillifolia subsp. serpillifolia | CNPS-EB: C | thyme-leaved spurge | |
| Festuca californica | CNPS-EB: C | California fescue | |
| Festuca elmeri | CNPS-EB: A1 | Elmer's fescue | |
| Fraxinus latifolia | CNPS-EB: B | Oregon ash | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Hieracium albiflorum | CNPS-EB: C | white hawkweed | |
| Hoita macrostachya | CNPS-EB: B | California hemp | |
| Horkelia californica var. frondosa | CNPS-EB: B | leafy horkelia | |
| Juncus phaeocephalus var. paniculatus | CNPS-EB: B | panicled rush, brown-headed rush | |
| Juncus phaeocephalus var. phaeocephalus | CNPS-EB: B | brownheaded rush | |
| Kopsiopsis strobilacea | (formerly Boschniakia strobilacea) | CNPS-EB: A1 | California ground-cone |
| Lasthenia glaberrima | CNPS-EB: B | smooth goldfields | |
| Layia gaillardioides | CNPS-EB: A2 | woodland layia | |
| Layia hieracioides | CNPS-EB: C | tall layia | |
| Leptochloa fusca subsp. fascicularis | CNPS-EB: A1 | bearded sprangletop | |
| Leptosiphon parviflorus | (formerly Linanthus p.) | CNPS-EB: B | small-flowered linanthus, small-flowered leptosiphon |
| Leptosiphon pygmaeus subsp. continentalis | (formerly Linanthus p. ssp. c. | CNPS-EB: B | pygmy linanthus, pygmy leptosiphon |
| Madia exigua | CNPS-EB: C | ||
| Malacothrix floccifera | CNPS-EB: C | woolly malacothrix | |
| Melica californica | CNPS-EB: C | California melic | |
| Morella californica | (formerly Myrica c.) | CNPS-EB: B | wax myrtle |
| Navarretia mellita | CNPS-EB: C | honey-scented navarretia | |
| Packera breweri | (formerly Senecio b.) | CNPS-EB: C | Brewer's ragwort, Brewer's butterweed |
| Persicaria hydropiperoides | (formerly Polygonum h.) | CNPS-EB: A2 | false waterpepper, water-pepper |
| Persicaria lapathifolia | (formerly Polygonum lapathifol | CNPS-EB: B | willow weed |
| Phacelia ramosissima | CNPS-EB: B | branching phacelia | |
| Pickeringia montana var. montana | CNPS-EB: C | 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 | |
| Plagiobothrys undulatus | CNPS-EB: A2 | wavy-stemmed popcornflower, coast allocarya | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Poa howellii | CNPS-EB: A2 | Howell's bluegrass | |
| Prunus emarginata | CNPS-EB: C | bitter cherry | |
| Pseudognaphalium beneolens | (formerly Gnaphalium canescens | CNPS-EB: C | fragrant everlasting |
| Quercus garryana var. garryana | CNPS-EB: B | Oregon oak | |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| Quercus xchasei | CNPS-EB: B | Chase oak | |
| Ranunculus lobbii | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S3 | Lobb's aquatic buttercup | |
| Rhus aromatica | (formerly R. trilobata) | CNPS-EB: B | skunk bush, skunkbrush, squawbush |
| Ribes divaricatum var. pubiflorum | CNPS-EB: C | straggle bush, straggly gooseberry | |
| Rorippa curvisiliqua | CNPS-EB: B | yellow cress | |
| Rorippa palustris subsp. palustris | CNPS-EB: B | marsh yellow-cress | |
| Rosa spithamea | CNPS-EB: C | coast ground rose, ground rose | |
| Rumex fueginus | CNPS-EB: A2 | golden dock | |
| Rumex salicifolius | (formerly R. salicifolius var. salicifolius) | CNPS-EB: B | willow dock |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Scutellaria californica | CNPS-EB: B | California skullcap | |
| Scutellaria tuberosa | CNPS-EB: C | Dannie's skullcap | |
| Senecio aronicoides | CNPS-EB: C | rayless ragwort, California butterweed | |
| Sequoia sempervirens | CNPS-EB: C | coast redwood | |
| Stebbinsoseris heterocarpa | CNPS-EB: C | grassland silverpuffs, derived microseris | |
| Stellaria nitens | CNPS-EB: C | shining chickweed | |
| Stipa lepida | CNPS-EB: C | foothill needlegrass | |
| Streptanthus glandulosus subsp. glandulosus | CNPS-EB: B | jewelflower | |
| Stylocline gnaphaloides | CNPS-EB: B | everlasting neststraw, nest-straw | |
| Trifolium dichotomum | CNPS-EB: C | branched indian clover | |
| Trifolium obtusiflorum | CNPS-EB: B | clammy clover, creek clover | |
| Trifolium oliganthum | CNPS-EB: C | few-flowered clover | |
| Viburnum ellipticum | CNPS-EB: *A2 State CNPS: 2B.3 Global Rank: G4G5 CNDDB Rank: S3 | oval-leaved viburnum | |
| Wyethia glabra | (W. helenioides is more common | CNPS-EB: C | mule ears |
| 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 | |
| Alopecurus saccatus | CNPS-EB: B | Howell's meadow foxtail | |
| Amelanchier utahensis | CNPS-EB: C | Utah service-berry | |
| Amsinckia eastwoodiae | CNPS-EB: A2 | Eastwood's fiddleneck | |
| Amsinckia lycopsoides | CNPS-EB: C | bugloss-flowered fiddleneck, bugloss fiddleneck | |
| Amsinckia tessellata var. tessellata | CNPS-EB: A1 | desert fiddleneck, devil's lettuce | |
| Brickellia californica | CNPS-EB: C | California brickellbush, California brickellia | |
| Calamagrostis rubescens | CNPS-EB: B | pine reed grass, pine grass | |
| Camissoniopsis intermedia | CNPS-EB: C | small primrose | |
| Carex barbarae | CNPS-EB: C | whiteroot sedge, Santa Barbara sedge, St. Barbara's sedge | |
| Cirsium andrewsii | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G3 CNDDB Rank: S3 | Franciscan thistle | |
| Cirsium brevistylum | CNPS-EB: B | indian thistle | |
| Clarkia purpurea subsp. viminea | (ssp. quadrivulnera more common | CNPS-EB: A1 | large godetia |
| Clematis ligusticifolia | CNPS-EB: C | western virgin's bower, virgin's bower | |
| Cornus sericea subsp. occidentalis | CNPS-EB: C | western dogwood | |
| Cornus sericea subsp. sericea | CNPS-EB: C | American dogwood | |
| Elatine brachysperma | CNPS-EB: A1 | waterwort | |
| Elatine californica | CNPS-EB: A2 | waterwort | |
| Elymus multisetus | CNPS-EB: C | big squirreltail | |
| Elymus trachycaulus subsp. trachycaulus | CNPS-EB: A1 | slender wheat grass | |
| Elymus xhansenii | CNPS-EB: B | Hansen squirreltail | |
| Epilobium ciliatum subsp. watsonii | (ssp. ciliatum is more common) | CNPS-EB: A1 | San Francisco willowherb |
| Equisetum laevigatum | CNPS-EB: A2 | smooth scouring rush | |
| Eriogonum roseum | CNPS-EB: A2 | wand wild buckwheat, virgate buckwheat | |
| Eryngium armatum | CNPS-EB: A1 | coastal button-celery, coast coyote-thistle | |
| Festuca octoflora | CNPS-EB: A2 | sixweeks grass, slender fescue | |
| Festuca rubra | CNPS-EB: C | red fescue | |
| Frangula californica subsp. tomentella | (formerly Rhamnus t.) | CNPS-EB: C | hoary coffeeberry |
| Garrya elliptica | CNPS-EB: B | silk tassel bush | |
| Gilia achilleifolia subsp. unknown | CNPS-EB: C? | California gilia | |
| Hemizonia congesta subsp. lutescens | CNPS-EB: B | hayfield tarweed | |
| Hesperevax acaulis var. ambusticola | (H. sparsiflora is more common | CNPS-EB: A1x | fire evax |
| Hesperevax caulescens | (H. sparsiflora is more common | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | hogwallow starfish |
| Heterotheca sessiliflora subsp. bolanderi | (H. s. ssp. echioides is more | CNPS-EB: C | Bolander goldenaster |
| Holocarpha macradenia | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FT CESA Status: CE | Santa Cruz tarplant | |
| Koeleria macrantha | CNPS-EB: C | june grass | |
| Lathyrus jepsonii var. californicus | CNPS-EB: B | buff pea | |
| Layia platyglossa | CNPS-EB: B | tidy-tips | |
| Lepidium latipes | CNPS-EB: B | dwarf peppergrass | |
| Lepidium oxycarpum | CNPS-EB: A2 | sharp-podded pepper-grass | |
| Lupinus pachylobus | CNPS-EB: B | big pod lupine | |
| Lythrum californicum | CNPS-EB: B | California loosestrife | |
| Microseris elegans | CNPS-EB: A1 | elegant microseris | |
| Osmorhiza brachypoda | CNPS-EB: C | California cicely | |
| Papaver californicum | CNPS-EB: B | fire poppy | |
| Piperia elegans subsp. elegans | CNPS-EB: C | coast piperia, elegant piperia | |
| Plagiobothrys acanthocarpus | CNPS-EB: B | adobe popcornflower, adobe allocarya | |
| Prunus subcordata | CNPS-EB: C | Pacific plum, Sierra plum | |
| Quercus berberidifolia | CNPS-EB: C | scrub oak | |
| Quercus wislizeni var. frutescens | CNPS-EB: C | shrubby interior live oak | |
| Quercus xjolonensis | CNPS-EB: A1? | blue oak x valley oak | |
| Ribes malvaceum var. malvaceum | CNPS-EB: C | chaparral currant | |
| Rumex salicifolius var. unknown | CNPS-EB: A2? | willow dock | |
| Sabulina californica | (formerly Minuartia californica) | CNPS-EB: A1 | California sandwort |
| Sidalcea diploscypha | CNPS-EB: A1 | fringed checkerbloom, fringed sidalcea | |
| Stipa cernua | CNPS-EB: C | nodding needlegrass | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Trianthema portulacastrum | CNPS-EB: A1x | horse purslane | |
| Trifolium barbigerum | CNPS-EB: A2 | bearded clover | |
| Trifolium fucatum | CNPS-EB: C | bull clover | |
| Trifolium wormskioldii | CNPS-EB: A1 | cow clover | |
| Turritis glabra | CNPS-EB: B | tower mustard | |
| Zeltnera davyi | (formerly Centaurium d.) | CNPS-EB: B | Davy's centaury, conchalagua |