| Phrymaceae | |
Hemichaena coulteri
| (A. Gray) Thieret | Fieldiana, Bot. 34(7): 94 | 1972 |
| Phrymaceae | |
Hemichaena fruticosa
| Benth. | Pl. Hartw. 78 | 1841 |
| Phrymaceae | |
Hemichaena levigata
| (B.L. Rob. & Greenm.) Thieret | Fieldiana, Bot. 34(7): 96 | 1972 |
| Phrymaceae | |
Hemichaena rugosa
| (Benth.) Thieret | Fieldiana, Bot. 34(7): 96 | 1972 |
| Phrymaceae | |
Hemichaena spinulosa
| (S. Watson) Thieret | Fieldiana, Bot. 34(7): 98 | 1972 |