| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Erigeron philadelphicus var. philadelphicus | CNPS-EB: C | fleabane | |
| Eryngium jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | ||
| Nemophila parviflora var. parviflora | CNPS-EB: B | small-flowered nemophila | |
| Oenothera elata subsp. hookeri | CNPS-EB: B | evening-primrose | |
| Sidalcea diploscypha | CNPS-EB: A1 | fringed checkerbloom, fringed sidalcea | |
| Trifolium flavulum | (Included within T. fucatum in | CNPS-EB: A1 | bull clover |
| Adiantum aleuticum | (A. jordanii is more common) | CNPS-EB: A1 | five-finger fern |
| 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 |
| Arbutus menziesii | CNPS-EB: B | Pacific madrone | |
| Berula erecta | CNPS-EB: C | cutleaf water-parsnip | |
| Calamagrostis rubescens | CNPS-EB: B | pine reed grass, pine grass | |
| Calochortus umbellatus | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3? CNDDB Rank: S3? | Oakland star-tulip | |
| Carex barbarae | CNPS-EB: C | whiteroot sedge, Santa Barbara sedge, St. Barbara's sedge | |
| Centromadia parryi subsp. congdonii | (formerly Hemizonia p. ssp. c. | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G3T2 CNDDB Rank: S2 | Congdon's tarplant |
| Collinsia sparsiflora var. unknown | CNPS-EB: C? | few-flowered blue-eyed Mary | |
| Cordylanthus pilosus subsp. pilosus | CNPS-EB: B | hairy bird's-beak | |
| Cornus sericea subsp. sericea | CNPS-EB: C | American dogwood | |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Delphinium variegatum subsp. variegatum | CNPS-EB: C | royal larkspur | |
| Deschampsia elongata | CNPS-EB: C | slender hair grass | |
| Equisetum laevigatum | CNPS-EB: A2 | smooth scouring rush | |
| Festuca idahoensis | CNPS-EB: C | Idaho fescue, blue bunchgrass | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Hemizonia congesta subsp. lutescens | CNPS-EB: B | hayfield tarweed | |
| Hesperolinon californicum | CNPS-EB: B | California dwarf flax | |
| Koeleria macrantha | CNPS-EB: C | june grass | |
| Lupinus littoralis var. variicolor | (formerly L. variicolor) | CNPS-EB: A1? | bluff lupine |
| Lupinus pachylobus | CNPS-EB: B | big pod lupine | |
| Osmorhiza brachypoda | CNPS-EB: C | California cicely | |
| Phalaris lemmonii | CNPS-EB: A1x | Lemmon's canary-grass | |
| Plagiobothrys canescens var. canescens | CNPS-EB: C | valley popcornflower | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| 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 subcordata | CNPS-EB: C | Pacific plum, Sierra plum | |
| Pseudognaphalium beneolens | (formerly Gnaphalium canescens | CNPS-EB: C | fragrant everlasting |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| Rumex crassus | (formerly R. salicifolius var. | CNPS-EB: A1 | willow dock |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Senecio aronicoides | CNPS-EB: C | rayless ragwort, California butterweed | |
| Sequoia sempervirens | CNPS-EB: C | coast redwood | |
| Stachys ajugoides | (var. rigida is more common) | CNPS-EB: A2 | bugle hedge nettle |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Trifolium fucatum | CNPS-EB: C | bull clover | |
| Trifolium oliganthum | CNPS-EB: C | few-flowered clover |