| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Cornus sericea subsp. unknown | CNPS-EB: C? | American dogwood | |
| Cryptantha torreyana var. pumila | CNPS-EB: B | Torrey's cryptantha | |
| Layia hieracioides | CNPS-EB: C | tall layia | |
| Ligusticum apiifolium | CNPS-EB: A2 | Pacific lovage | |
| Lupinus affinis | CNPS-EB: A1 | lupine | |
| Piperia elegans subsp. elegans | CNPS-EB: C | coast piperia, elegant piperia | |
| Sambucus racemosa var. racemosa | CNPS-EB: B | red elderberry | |
| Sequoia sempervirens | CNPS-EB: C | coast redwood | |
| Trillium ovatum subsp. ovatum | CNPS-EB: A2 | white trillium | |
| Turritis glabra | CNPS-EB: B | tower mustard | |
| 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 |
| Alnus rubra | (A. rhombifolia is more common | CNPS-EB: A2 | red alder |
| Apocynum androsaemifolium | CNPS-EB: A2 | bitter dogbane, dogbane | |
| Aralia californica | CNPS-EB: C | elk clover | |
| Arctostaphylos glandulosa subsp. glandulosa | CNPS-EB: B | Eastwood manzanita | |
| Arnica discoidea | CNPS-EB: B | rayless arnica | |
| 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 | |
| Camissoniopsis micrantha | CNPS-EB: C | small primrose | |
| Carex barbarae | CNPS-EB: C | whiteroot sedge, Santa Barbara sedge, St. Barbara's sedge | |
| Castilleja wightii | CNPS-EB: B | Wight's indian paintbrush | |
| Ceanothus thyrsiflorus var. thyrsiflorus | CNPS-EB: B | blue blossom, California lilac | |
| Cirsium brevistylum | CNPS-EB: B | indian thistle | |
| Cirsium occidentale var. occidentale | CNPS-EB: A1x | COBWEBBY THISTLE | |
| Clarkia purpurea subsp. purpurea | (ssp. quadrivulnera is more co | CNPS-EB: A2 | purple clarkia |
| Corallorhiza maculata var. maculata | (forma immaculata is more comm | CNPS-EB: A2 | spotted coralroot |
| Cornus sericea subsp. occidentalis | CNPS-EB: C | western dogwood | |
| Cryptantha clevelandii var. florosa | CNPS-EB: B | Cleveland's cryptantha | |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Delphinium variegatum subsp. variegatum | CNPS-EB: C | royal larkspur | |
| 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 | |
| Elymus xhansenii | CNPS-EB: B | Hansen squirreltail | |
| Festuca idahoensis | CNPS-EB: C | Idaho fescue, blue bunchgrass | |
| Fraxinus latifolia | CNPS-EB: B | Oregon ash | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Heterotheca sessiliflora subsp. bolanderi | (H. s. ssp. echioides is more | CNPS-EB: C | Bolander goldenaster |
| Leptosiphon androsaceus | (formerly Linanthus a.) | CNPS-EB: C | common linanthus, common leptosiphon |
| Lupinus littoralis var. variicolor | (formerly L. variicolor) | CNPS-EB: A1? | bluff lupine |
| Marah oregana | CNPS-EB: B | coast man-root | |
| Morella californica | (formerly Myrica c.) | CNPS-EB: B | wax myrtle |
| Navarretia mellita | CNPS-EB: C | honey-scented navarretia | |
| Oxalis oregana | CNPS-EB: A1 | redwood sorrel | |
| Perideridia gairdneri subsp. gairdneri | CNPS-EB: *A1x State CNPS: 4.2 Global Rank: G5T3T4 CNDDB Rank: S3S4 | Gairdner's yampah | |
| Petasites frigidus var. palmatus | CNPS-EB: A1 | western sweet coltsfoot, coltsfoot | |
| Pinus coulteri | CNPS-EB: B | Coulter pine | |
| Piperia elongata | CNPS-EB: C | chaparral orchid, wood rein-orchid, elongate piperia | |
| Poa howellii | CNPS-EB: A2 | Howell's bluegrass | |
| Prunus emarginata | CNPS-EB: C | bitter cherry | |
| Prunus subcordata | CNPS-EB: C | Pacific plum, Sierra plum | |
| Pseudognaphalium biolettii | (formerly Gnaphalium bicolor) | CNPS-EB: A1 | Bioletti's cudweed |
| Psilocarphus chilensis | (formerly P. tenellus var. glo | CNPS-EB: A1 | round woolly marbles, round woolly-marbles |
| Ribes amarum | CNPS-EB: A1? | bitter gooseberry | |
| Ribes divaricatum var. pubiflorum | CNPS-EB: C | straggle bush, straggly gooseberry | |
| Rumex occidentalis | CNPS-EB: A2 | western dock | |
| Salix scouleriana | CNPS-EB: A2 | Scouler's willow | |
| Scutellaria californica | CNPS-EB: B | California skullcap | |
| Stebbinsoseris heterocarpa | CNPS-EB: C | grassland silverpuffs, derived microseris | |
| Stephanomeria elata | CNPS-EB: A1 | stephanomeria | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Streptanthus albidus subsp. peramoenus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T2 CNDDB Rank: S2 | most beautiful jewel-flower | |
| Taxus brevifolia | CNPS-EB: A1 | PACIFIC YEW | |
| Tellima grandiflora | CNPS-EB: C | fringe cups | |
| Trifolium dichotomum | CNPS-EB: C | branched indian clover | |
| Trisetum canescens | CNPS-EB: A2 | tall trisetum | |
| Tropidocarpum gracile | CNPS-EB: B | slender tropidocarpum | |
| Vaccinium ovatum | CNPS-EB: C | California huckleberry |