| Juncus articulatus subsp. articulatus | jointed rush | A1x |
| Juncus bufonius var. occidentalis | western toad rush, toad rush | A1x |
| Juncus dubius | mariposa rush, Mariposa rush | A1x |
| Juncus ensifolius | dagger rush, swordleaved rush, three-stamened rush | A1? |
| Juncus lescurii | San Francisco rush, salt rush | A1 |
| Juncus mexicanus | Mexican rush | C |
| Juncus oxymeris | pointed rush | A1 |
| Juncus phaeocephalus var. paniculatus | panicled rush, brown-headed rush | B |
| Juncus phaeocephalus var. phaeocephalus | brownheaded rush | B |
| Juncus phaeocephalus var. unknown | brown-headed rush | A2? |