Viola nannae (Fig. 1G-J) is a rare and little known species known from a few localities in central southern Kenya centred on the Aberdare Mountains and the Mau Escarpment. It is a species of upland grassland between 2550- 3300 m altitude. ...Viola nannae is readily distinguished by its dwarf habit and ovate or suborbicular leaves which are glabrous beneath, and only pubescent above along and close to the margin, and also by having entire stipules. The species is only known from a handful of herbarium specimens, and it is often found growing in close proximity to the other two species. (1)
References
Grey-Wilson, C. Notes on African Violaceae. Kew Bull. 1981, 36, 103–126
Fig. 1 From Grey-Wilson, C. Notes on African Violaceae. Kew Bull. 1981, 36, p.124