| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Amelanchier utahensis | CNPS-EB: C | Utah service-berry | |
| Aralia californica | CNPS-EB: C | elk clover | |
| Arbutus menziesii | CNPS-EB: B | Pacific madrone | |
| Arctostaphylos crustacea subsp. crustacea | CNPS-EB: C | brittleleaf manzanita | |
| Arctostaphylos pallida | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FT CESA Status: CE | pallid manzanita | |
| Asarum caudatum | CNPS-EB: B | wild-ginger | |
| Calochortus umbellatus | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3? CNDDB Rank: S3? | Oakland star-tulip | |
| Calycadenia multiglandulosa | CNPS-EB: A2 | sticky calycadenia | |
| Chrysolepis chrysophylla var. minor | CNPS-EB: A2 | golden chinquapin | |
| Clarkia franciscana | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FE CESA Status: CE | Presidio clarkia | |
| Cornus sericea subsp. sericea | CNPS-EB: C | American dogwood | |
| Delphinium nudicaule | CNPS-EB: C | red larkspur, orange larkspur | |
| Dirca occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | western leatherwood | |
| Eriogonum gracile var. gracile | CNPS-EB: C | slender woolly wild buckwheat, slender buckwheat | |
| Eriogonum luteolum var. caninum | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T2 CNDDB Rank: S2 | Tiburon buckwheat | |
| Garrya elliptica | CNPS-EB: B | silk tassel bush | |
| Gutierrezia californica | CNPS-EB: C | California matchweed | |
| Layia chrysanthemoides | CNPS-EB: A2 | smooth layia | |
| Melica californica | CNPS-EB: C | California melic | |
| Polypodium scouleri | CNPS-EB: A1 | leather-leaf fern | |
| Quercus garryana var. garryana | CNPS-EB: B | Oregon oak | |
| Quercus parvula var. shrevei | CNPS-EB: A1 | island scrub oak | |
| Sambucus racemosa var. racemosa | CNPS-EB: B | red elderberry | |
| Sequoia sempervirens | CNPS-EB: C | coast redwood | |
| Streptanthus albidus subsp. peramoenus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T2 CNDDB Rank: S2 | most beautiful jewel-flower | |
| Vaccinium ovatum | CNPS-EB: C | California huckleberry | |
| Zeltnera davyi | (formerly Centaurium d.) | CNPS-EB: B | Davy's centaury, conchalagua |
| Agoseris heterophylla var. heterophylla | CNPS-EB: C | ||
| Allium falcifolium | CNPS-EB: A2 | sickle-leaved onion | |
| Apiastrum angustifolium | CNPS-EB: C | wild celery | |
| Apocynum androsaemifolium | CNPS-EB: A2 | bitter dogbane, dogbane | |
| Arctostaphylos glandulosa subsp. glandulosa | CNPS-EB: B | Eastwood manzanita | |
| Arnica discoidea | CNPS-EB: B | rayless arnica | |
| Balsamorhiza macrolepis | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | big-scale balsamroot | |
| Calamagrostis nutkaensis | (historical-18??) | CNPS-EB: A1x | Pacific reed grass |
| California macrophylla | (formerly Erodium macrophyllum | CNPS-EB: B | round-leaved filaree |
| Carex globosa | CNPS-EB: B | round-fruited sedge | |
| Carex leptopoda | (formerly Carex deweyana subsp leptopoda | CNPS-EB: A2 | slender-footed sedge, short-scaled sedge |
| Carex obnupta | CNPS-EB: B | slough sedge | |
| Castilleja ambigua subsp. ambigua | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5T4 CNDDB Rank: S3S4 | Johnny-nip | |
| Castilleja exserta subsp. latifolia | CNPS-EB: A1 | owl's-clover | |
| Castilleja rubicundula subsp. lithospermoides | CNPS-EB: B | cream sacs | |
| Castilleja subinclusa subsp. franciscana | CNPS-EB: A1 | Franciscan indian paintbrush | |
| Castilleja wightii | CNPS-EB: B | Wight's indian paintbrush | |
| Cirsium brevistylum | CNPS-EB: B | indian thistle | |
| Cirsium quercetorum | CNPS-EB: A2 | brownie thistle | |
| Clintonia andrewsiana | CNPS-EB: A1 | red clintonia | |
| Dendromecon rigida | CNPS-EB: A2 | bush poppy | |
| Deschampsia elongata | CNPS-EB: C | slender hair grass | |
| Dichelostemma volubile | 2 questionable ID sites. Needs field research | CNPS-EB: A1? | twining brodiaea, snake lily |
| Erythranthe microphylla | CNPS-EB: A1x | ||
| Gilia capitata subsp. unknown | CNPS-EB: A1? | blue field gilia | |
| Heterotheca sessiliflora subsp. bolanderi | (H. s. ssp. echioides is more | CNPS-EB: C | Bolander goldenaster |
| Hosackia stipularis var. stipularis | CNPS-EB: A1 | stipulate lotus | |
| Lathyrus jepsonii var. californicus | CNPS-EB: B | buff pea | |
| Layia gaillardioides | CNPS-EB: A2 | woodland layia | |
| Layia glandulosa | (historical-1983 but not seen | CNPS-EB: A1x | white layia |
| Layia hieracioides | CNPS-EB: C | tall layia | |
| Lepidium oblongum | (historical-1937) | CNPS-EB: A1x | wayside pepper-grass |
| Leptosyne stillmanii | (formerly Coreopsis s.) | CNPS-EB: A1x | Stillman's coreopsis |
| Lilium pardalinum subsp. pardalinum | CNPS-EB: A1 | leopard lily | |
| Micropus amphibolus | (historical - 1955) | CNPS-EB: *A1x State CNPS: 3.2 Global Rank: G3G4 CNDDB Rank: S3S4 | Mount Diablo cottonseed, Mt. Diablo cottonweed |
| 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 | |
| Myriopteris gracillima | CNPS-EB: A1 | lace fern | |
| Oxalis oregana | CNPS-EB: A1 | redwood sorrel | |
| Oxalis pilosa | (formerly O. albicans ssp. p.) | CNPS-EB: B | hairy wood-sorrel |
| Perideridia oregana | CNPS-EB: A2 | yampah | |
| Phacelia divaricata | CNPS-EB: B | divaricate phacelia | |
| Piperia elegans subsp. elegans | CNPS-EB: C | coast piperia, elegant piperia | |
| Piperia elongata | CNPS-EB: C | chaparral orchid, wood rein-orchid, elongate piperia | |
| Polystichum californicum | CNPS-EB: A1 | California sword fern | |
| Polystichum imbricans subsp. imbricans | CNPS-EB: A1x | rock sword fern | |
| Populus trichocarpa | (formerly P. balsamifera var. | CNPS-EB: C | black cottonwood |
| Prosartes smithii | (formerly Disporum s.)(P. | CNPS-EB: A1x | large-flowered fairy bell |
| Prunus ilicifolia subsp. ilicifolia | CNPS-EB: B | islay, holly-leafed cherry | |
| Rosa spithamea | CNPS-EB: C | coast ground rose, ground rose | |
| Salix scouleriana | CNPS-EB: A2 | Scouler's willow | |
| Sanicula laciniata | CNPS-EB: A2 | coast sanicle | |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Scoliopus bigelovii | (historical-1900) | CNPS-EB: A1x | fetid adder's tongue, slink pod |
| Scutellaria californica | CNPS-EB: B | California skullcap | |
| Stachys bullata | CNPS-EB: A1? | California hedge nettle | |
| Stephanomeria elata | CNPS-EB: A1 | stephanomeria | |
| Tetrapteron graciliflorum | CNPS-EB: C | hill sun cup | |
| Thermopsis californica var. californica | (historical-1929) | CNPS-EB: A1x | santa ynez false-lupine, false-lupine |
| Thysanocarpus radians | CNPS-EB: A1 | ribbed fringe pod | |
| Trifolium barbigerum | CNPS-EB: A2 | bearded clover | |
| Trifolium dichotomum | CNPS-EB: C | branched indian clover | |
| Trifolium fucatum | CNPS-EB: B | bull clover | |
| Trifolium macraei | CNPS-EB: A1 | Macrae's clover, double-headed clover | |
| Vancouveria planipetala | (historical-1898) | CNPS-EB: A1x | redwood ivy, inside-out flower |