| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Triglochin concinna var. concinna | (T. maritima is more common) | CNPS-EB: A1 | seaside arrow-grass, slender arrow-grass |
| Acaena californica | (formerly A. pinnatifida var. californica) | CNPS-EB: C | California acaena |
| Alnus rubra | (A. rhombifolia is more common | CNPS-EB: A2 | red alder |
| Ammannia coccinea | CNPS-EB: A1 | long-leaved ammannia | |
| Apocynum cannabinum | CNPS-EB: B | dogbane, Indian-hemp | |
| Aralia californica | CNPS-EB: C | elk clover | |
| Asarum caudatum | CNPS-EB: B | wild-ginger | |
| Astragalus tener var. tener | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T1 CNDDB Rank: S1 | alkali milkvetch | |
| Carex senta | CNPS-EB: A1 | western rough sedge, rough sedge | |
| Carex subbracteata | CNPS-EB: B | small-bracted sedge | |
| Castilleja rubicundula subsp. lithospermoides | CNPS-EB: B | cream sacs | |
| Cicendia quadrangularis | CNPS-EB: A2 | timwort | |
| Cirsium quercetorum | CNPS-EB: A2 | brownie thistle | |
| Deinandra corymbosa | (formerly Hemizonia corymbosa) | CNPS-EB: A2 | coast tarweed |
| Deschampsia cespitosa subsp. holciformis | CNPS-EB: B | tufted hairgrass | |
| Gilia capitata subsp. staminea | CNPS-EB: C | blue field gilia | |
| Gilia millefoliata | CNPS-EB: *A1x State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | DARK-EYED GILIA | |
| Hesperomecon linearis | (formerly Meconella l.) (hist | CNPS-EB: A1x | narrow-leaved meconella |
| Hoita orbicularis | (historical-1936) | CNPS-EB: A1x | round-leaved psoralea |
| Isolepis cernua | (formerly Scirpus cernuus) | CNPS-EB: C | low club-rush |
| Lasthenia glabrata subsp. glabrata | CNPS-EB: A2 | yellow-ray goldfields | |
| Lathyrus jepsonii var. californicus | CNPS-EB: B | buff pea | |
| Lilium pardalinum subsp. pardalinum | CNPS-EB: A1 | leopard lily | |
| Microseris bigelovii | (historical-1891) | CNPS-EB: A1x | coast microseris |
| Monardella douglasii | CNPS-EB: A2 | fenestra monardella, Fenestra monardella | |
| Oxalis pilosa | (formerly O. albicans ssp. p.) | CNPS-EB: B | hairy wood-sorrel |
| Persicaria lapathifolia | (formerly Polygonum lapathifol | CNPS-EB: B | willow weed |
| Phacelia divaricata | CNPS-EB: B | divaricate phacelia | |
| Phalaris angusta | (historical-1912) | CNPS-EB: A1x | narrow canary grass |
| Phalaris lemmonii | CNPS-EB: A1 | Lemmon's canary-grass | |
| Plagiobothrys canescens var. canescens | CNPS-EB: C | valley popcornflower | |
| Plagiobothrys chorisianus var. chorisianus | (historical-1890) | CNPS-EB: *A1x State CNPS: 1B.2 Global Rank: G3T1Q CNDDB Rank: S1 | Choris' popcornflower |
| Plantago elongata | CNPS-EB: B | annual coast plantain | |
| Pleuropogon californicus var. californicus | CNPS-EB: B | semaphore grass | |
| Poa howellii | CNPS-EB: A2 | Howell's bluegrass | |
| Polygonum marinense | CNPS-EB: *A1x State CNPS: 3.1 Global Rank: G2Q CNDDB Rank: S2 | MARIN KNOTWEED | |
| Populus trichocarpa | (formerly P. balsamifera var. | CNPS-EB: C | black cottonwood |
| Psilocarphus chilensis | (formerly P. tenellus var. glo | CNPS-EB: A1 | round woolly marbles, round woolly-marbles |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| Ranunculus orthorhynchus var. bloomeri | CNPS-EB: A1x | Bloomer's buttercup | |
| Ribes speciosum | CNPS-EB: A1 | fuchsia-flowered gooseberry | |
| Setaria parviflora | CNPS-EB: B | knotroot bristle grass, perennial foxtail | |
| Silene laciniata subsp. californica | (formerly Silene c.) | CNPS-EB: C | Indian pink, California pink, California Indian pink |
| Silene verecunda | CNPS-EB: A1 | San Francisco campion, Cuyamaca campion | |
| Spergularia macrotheca var. macrotheca | CNPS-EB: A2 | large-flowered sand spurry | |
| Spiranthes romanzoffiana | CNPS-EB: A1 | hooded ladies' tresses | |
| Stachys bullata | CNPS-EB: A1? | California hedge nettle | |
| Stebbinsoseris heterocarpa | CNPS-EB: C | grassland silverpuffs, derived microseris | |
| Streptanthus albidus subsp. peramoenus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T2 CNDDB Rank: S2 | most beautiful jewel-flower | |
| Trifolium wormskioldii | CNPS-EB: A1 | cow clover | |
| Triodanis biflora | CNPS-EB: A2 | Venus' looking-glass | |
| Vicia hassei | CNPS-EB: A2 | slender vetch | |
| Zeltnera davyi | (formerly Centaurium d.) | CNPS-EB: B | Davy's centaury, conchalagua |