Viola sect. Andinium

Gonzáles, Paúl & Cano, Asunción, 2016, Two new species of Viola (Violaceae) named in honor of preceding Peruvian botanists, Phytotaxa 283 (1), pp. 83-90 : 88

Key to species in the spatulate-ovate-leaved group of Viola sect. Andinium in Peru

1. Leaf blade with entire margin.............................................................................................................................................................2

- Leaf blade pinnatifid, pinnatipartite, crenate, or dentate....................................................................................................................3

2. Plants annual, roots thin 2–4 mm, leaf tip not folded back ......................................................................................... V. micranthella

- Plants perennial, roots thick 5–10 mm, leaf tip folded back .............................................................................................. V. replicata

3. Flowers white with lines or nerves purple, 8–10 mm long, sepals and petals lanceolate..................................................................4

- Flowers coloured or entirely purple, 3–6 mm long, sepals and petals oblong to ovate.....................................................................5

4. Leaf 4-stipulate, blade margins crenate............................................................................................................................ V. granulosa

- Leaf 2-stipulate, blade margins pinnatifid to pinnatipartite .............................................................................................. V. ferreyrae

5. Leaf margins repand-crenate to entire, flat, petiole dilated, flowers 3–6 mm long, petals crimson-coloured ................ V. kermesina

- Leaf margins evidently crenate, crenulate undulate, flowers to 3 mm long, petals dark purple on outer surface and dark purple or light purple on inner surface.................................................................................................................................................. V.enmae