| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Arctostaphylos crustacea subsp. crustacea | CNPS-EB: C | brittleleaf manzanita | |
| Calochortus umbellatus | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3? CNDDB Rank: S3? | Oakland star-tulip | |
| Carex obnupta | CNPS-EB: B | slough sedge | |
| Cicuta douglasii | CNPS-EB: A2 | water-hemlock | |
| Clarkia concinna subsp. concinna | CNPS-EB: C | large godetia | |
| Delphinium nudicaule | CNPS-EB: C | red larkspur, orange larkspur | |
| Festuca californica | CNPS-EB: C | California fescue | |
| Garrya elliptica | CNPS-EB: B | silk tassel bush | |
| Layia hieracioides | CNPS-EB: C | tall layia | |
| Madia exigua | CNPS-EB: C | ||
| Sanicula laciniata | CNPS-EB: A2 | coast sanicle | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Apocynum androsaemifolium | CNPS-EB: A2 | bitter dogbane, dogbane | |
| Arctostaphylos glandulosa subsp. glandulosa | CNPS-EB: B | Eastwood manzanita | |
| Carex gracilior | CNPS-EB: A1 | slender sedge | |
| Castilleja wightii | CNPS-EB: B | Wight's indian paintbrush | |
| Chorizanthe polygonoides var. polygonoides | CNPS-EB: A1 | knotweed spineflower | |
| Cornus sericea subsp. occidentalis | CNPS-EB: C | western dogwood | |
| Cornus sericea subsp. sericea | CNPS-EB: C | American dogwood | |
| Cryptantha micromeres | CNPS-EB: A2 | minute-flowered cryptantha | |
| Cryptantha muricata var. unknown | CNPS-EB: A1? | prickly cryptantha | |
| Danthonia californica | CNPS-EB: B | California oat grass | |
| Deinandra corymbosa | (formerly Hemizonia corymbosa) | CNPS-EB: A2 | coast tarweed |
| Dirca occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | western leatherwood | |
| Epilobium ciliatum subsp. watsonii | (ssp. ciliatum is more common) | CNPS-EB: A1 | San Francisco willowherb |
| Equisetum laevigatum | CNPS-EB: A2 | smooth scouring rush | |
| Fritillaria liliacea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | fragrant fritillary | |
| Githopsis diffusa subsp. robusta | CNPS-EB: A2 | southern bluecup | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Helianthus californicus | CNPS-EB: C | California sunflower | |
| Leptosiphon aureus | (formerly L.acicularis, Linanthus acicularis) | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4? CNDDB Rank: S4? | bristly leptosiphon, bristly linanthus |
| Leptosiphon liniflorus | (formerly Linanthus l.) | CNPS-EB: A1 | flax-flowered linanthus, flax-flowered leptosiphon |
| Lithophragma bolanderi | CNPS-EB: A1 | Bolander starflower | |
| Micropus amphibolus | (historical - 1955) | CNPS-EB: *A1x State CNPS: 3.2 Global Rank: G3G4 CNDDB Rank: S3S4 | Mount Diablo cottonseed, Mt. Diablo cottonweed |
| Micropus californicus var. subvestitus | (var. californicus is more common) | CNPS-EB: A2 | slender cottonweed |
| Microseris campestris | CNPS-EB: A1 | San Joaquin microseris | |
| Oenothera elata subsp. hookeri | CNPS-EB: B | evening-primrose | |
| Oxalis pilosa | (formerly O. albicans ssp. p.) | CNPS-EB: B | hairy wood-sorrel |
| Phacelia divaricata | CNPS-EB: B | divaricate phacelia | |
| Phalaris californica | (historical-1943) | CNPS-EB: A1x | California canary grass |
| Piperia elegans subsp. elegans | CNPS-EB: C | coast piperia, elegant piperia | |
| Plagiobothrys tenellus | CNPS-EB: B | Pacific popcornflower, slender popcornflower | |
| Prunus ilicifolia subsp. ilicifolia | CNPS-EB: B | islay, holly-leafed cherry | |
| Psilocarphus brevissimus var. brevissimus | CNPS-EB: B | dwarf woollyheads, dwarf woolly-marbles | |
| Rhamnus crocea | CNPS-EB: C | spiny redberry | |
| Rosa spithamea | CNPS-EB: C | coast ground rose, ground rose | |
| Rumex californicus | (formerly R. salicifolius var. dentatus) | CNPS-EB: C | willow dock |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Streptanthus albidus subsp. peramoenus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T2 CNDDB Rank: S2 | most beautiful jewel-flower | |
| Triodanis biflora | CNPS-EB: A2 | Venus' looking-glass | |
| Tropidocarpum gracile | CNPS-EB: B | slender tropidocarpum | |
| Vaccinium ovatum | CNPS-EB: C | California huckleberry |