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