| Diascia denticulata Benth. | Nemesia denticulata (Benth.) A.L.Grant ex Fourc. |
| Diascia elegans (Hiern) Hiern | Diascia capsularis Benth. trib. Hemimerideae |
| Diascia flanaganii Hiern | Diascia stachyoides Schltr. ex Hiern trib. Hemimerideae |
| Diascia macowanii Hiern | Diascia rigescens E.Mey ex Benth. trib. Hemimerideae |
| Diascia moltenensis Hiern | Diascia integerrima E.Mey. ex Benth. trib. Hemimerideae |
| Diascia monasca Hiern | Diascia patens (Thunb.) Grant ex Fourc. trib. Hemimerideae |