| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Alnus rubra | (A. rhombifolia is more common | CNPS-EB: A2 | red alder |
| Ammannia coccinea | CNPS-EB: A1 | long-leaved ammannia | |
| Arbutus menziesii | CNPS-EB: B | Pacific madrone | |
| Carex nebrascensis | CNPS-EB: B | Nebraska sedge | |
| Carex obnupta | CNPS-EB: B | slough sedge | |
| Clematis ligusticifolia | CNPS-EB: C | western virgin's bower, virgin's bower | |
| Cornus sericea subsp. occidentalis | CNPS-EB: C | western dogwood | |
| Eclipta prostrata | CNPS-EB: A1 | false daisy | |
| Epilobium ciliatum subsp. watsonii | (ssp. ciliatum is more common) | CNPS-EB: A1 | San Francisco willowherb |
| Euphorbia serpillifolia subsp. serpillifolia | CNPS-EB: C | thyme-leaved spurge | |
| Oxalis pilosa | (formerly O. albicans ssp. p.) | CNPS-EB: B | hairy wood-sorrel |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Prunus ilicifolia subsp. ilicifolia | CNPS-EB: B | islay, holly-leafed cherry | |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Sesuvium verrucosum | CNPS-EB: B | western sea-purslane, sea-purslane | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Symphyotrichum subulatum var. parviflorum | (formerly Aster subulatus var. | CNPS-EB: B | slim aster |
| Amsinckia douglasiana | (historical-1938) | CNPS-EB: *A1x State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | Douglas' fiddleneck |
| Cyperus erythrorhizos | CNPS-EB: B | red-rooted cyperus |