| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Berula erecta | CNPS-EB: C | cutleaf water-parsnip | |
| Bidens frondosa | CNPS-EB: B | sticktight | |
| Brickellia californica | CNPS-EB: C | California brickellbush, California brickellia | |
| Carex nudata | CNPS-EB: B | torrent sedge | |
| Clematis ligusticifolia | CNPS-EB: C | western virgin's bower, virgin's bower | |
| Cornus sericea subsp. sericea | CNPS-EB: C | American dogwood | |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Datisca glomerata | CNPS-EB: C | durango root | |
| Eriogonum fasciculatum var. foliolosum | CNPS-EB: A1 | leafy California buckwheat, California buckwheat | |
| Mentha canadensis | CNPS-EB: B | American cornmint, Japanese peppermint | |
| Mentzelia lindleyi | CNPS-EB: B | Lindley's blazing star | |
| Persicaria hydropiperoides | (formerly Polygonum h.) | CNPS-EB: A2 | false waterpepper, water-pepper |
| Persicaria punctata | (formerly Polygonum punctatum) | CNPS-EB: C | water smartweed |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Populus trichocarpa | (formerly P. balsamifera var. | CNPS-EB: C | black cottonwood |
| Sagina decumbens subsp. occidentalis | (S. apetala is more common) | CNPS-EB: B | western pearlwort |
| Sparganium eurycarpum var. greenei | CNPS-EB: A1 | Greene's bur-reed | |
| Stephanomeria elata | CNPS-EB: A2 | stephanomeria | |
| Acmispon strigosus | CNPS-EB: B | strigose trefoil | |
| 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 |
| Alisma triviale | (formerly A. plantago-aquatica | CNPS-EB: C | water plantain |
| Arctostaphylos crustacea subsp. crustacea | CNPS-EB: C | brittleleaf manzanita | |
| Astragalus asymmetricus | CNPS-EB: C | San Joaquin locoweeed | |
| Cirsium brevistylum | CNPS-EB: B | indian thistle | |
| Cirsium cymosum var. cymosum | CNPS-EB: C | peregrine thistle | |
| Clarkia concinna subsp. automixa | (ssp. concinna is more common) | CNPS-EB: *A2 State CNPS: 4.3 Global Rank: G5?T3 CNDDB Rank: S3 | Santa Clara red ribbons |
| Clarkia concinna subsp. concinna | CNPS-EB: C | large godetia | |
| Clarkia purpurea subsp. viminea | (ssp. quadrivulnera more common | CNPS-EB: A1 | large godetia |
| Cyperus erythrorhizos | CNPS-EB: B | red-rooted cyperus | |
| Cyperus niger | CNPS-EB: A2 | black sedge | |
| Dudleya cymosa subsp. paniculata | CNPS-EB: C | spreading dudleya | |
| Epipactis gigantea | CNPS-EB: A1 | stream orchid | |
| Erigeron philadelphicus var. philadelphicus | CNPS-EB: C | fleabane | |
| Eriogonum angulosum | CNPS-EB: B | angle-stem wild buckwheat, angle-stemmed eriogonum | |
| Eriogonum truncatum | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 | Mount Diablo buckwheat | |
| 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 |
| Festuca elmeri | CNPS-EB: A1 | Elmer's fescue | |
| Festuca idahoensis | CNPS-EB: C | Idaho fescue, blue bunchgrass | |
| Glycyrrhiza lepidota | CNPS-EB: C | wild licorice | |
| Heterotheca oregona var. scaberrima | CNPS-EB: A1 | Oregon goldenaster | |
| Horkelia californica var. californica | CNPS-EB: A1 | California horkelia | |
| Horkelia californica var. frondosa | CNPS-EB: B | leafy horkelia | |
| Hypericum scouleri | CNPS-EB: A1x | Scouler's st. john's wort, Scouler's St. John's wort | |
| 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 | |
| Leersia oryzoides | CNPS-EB: A1 | rice cutgrass | |
| Lythrum californicum | CNPS-EB: B | California loosestrife | |
| Mentzelia laevicaulis var. laevicaulis | (historical-1969) | CNPS-EB: A1x | blazing star |
| Mimetanthe pilosa | (formerly Mimulus pilosus) | CNPS-EB: B | downy monkeyflower |
| Muilla maritima | CNPS-EB: B | common muilla | |
| Oenothera elata subsp. hookeri | CNPS-EB: B | evening-primrose | |
| Oxalis pilosa | (formerly O. albicans ssp. p.) | CNPS-EB: B | hairy wood-sorrel |
| Panicum capillare | CNPS-EB: A2 | witch grass | |
| Persicaria lapathifolia | (formerly Polygonum lapathifol | CNPS-EB: B | willow weed |
| Phacelia tanacetifolia | CNPS-EB: B | tansy phacelia | |
| Phyla lanceolata | CNPS-EB: A1x | fog-fruit | |
| Plagiobothrys canescens var. canescens | CNPS-EB: C | valley popcornflower | |
| Pseudognaphalium microcephalum | (formerly Gnaphalium canescens | CNPS-EB: A1 | white everlasting |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| Ribes aureum var. gracillimum | CNPS-EB: A2 | golden currant | |
| Rumex salicifolius var. unknown | CNPS-EB: A2? | willow dock | |
| Salix melanopsis | CNPS-EB: A1x | dusky willow | |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Stachys ajugoides | (var. rigida is more common) | CNPS-EB: A2 | bugle hedge nettle |
| Streptanthus albidus subsp. peramoenus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T2 CNDDB Rank: S2 | most beautiful jewel-flower | |
| Symphyotrichum subulatum var. parviflorum | (formerly Aster subulatus var. | CNPS-EB: B | slim aster |
| Trifolium dichotomum | CNPS-EB: C | branched indian clover |