Hastings Slough
| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Centromadia parryi subsp. congdonii | (formerly Hemizonia p. ssp. c. | CNPS-EB: *A2 State CNPS: 1B.1 | Congdon's tarplant |
| Chloropyron molle subsp. molle | CNPS-EB: *A2 State CNPS: 1B.2 FESA Status: FE CESA Status: CR | soft salty bird's-beak, soft bird's-beak | |
| Lathyrus jepsonii var. jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 | delta tule pea, Delta tule pea | |
| Potentilla anserina subsp. pacifica | CNPS-EB: A2 | Pacific silverweed | |
| Rumex occidentalis | CNPS-EB: A2 | western dock | |
| Cuscuta pacifica var. pacifica | (formerly C. salina var. major) | CNPS-EB: C | salt-marsh dodder |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Lythrum californicum | CNPS-EB: B | California loosestrife | |
| Persicaria punctata | (formerly Polygonum punctatum) | CNPS-EB: C | water smartweed |
| Phragmites australis | CNPS-EB: B-PV | common reed | |
| Pluchea odorata var. odorata | CNPS-EB: B-PV | saltmarsh fleabane | |
| Triglochin maritima | CNPS-EB: C | common arrow-grass, seaside arrow-grass |
