| Violaceae | |
Viola diffusa var. brevibarbata
| C.J. Wang | Acta Bot. Yunnan. 13(3): 264–265 | 1991 |
| Violaceae | |
Viola diffusa var. brevisepala
| W. Becker | Bull. Misc. Inform. Kew 1928(6): 251 | 1928 |
| Violaceae | |
Viola diffusa var. diffusa
| | | |
| Violaceae | |
Viola diffusa var. glabella
| H. Boissieu | Bull. Herb. Boissier, sér. 2, 1(11): 1077 | 1901 |
| Violaceae | |
Viola diffusa var. glaberrima
| W. Becker | | |
| Violaceae | |
Viola diffusa subsp. tenuis
| (Benth.) W. Becker | Philipp. J. Sci. 19(6): 714–715 | 1921 |
| Violaceae | |
Viola diffusa var. tomentosa
| W. Becker | Beih. Bot. Centralbl., Abt. 2 20(2): 127 | 1906 |