Viola subg. Neoandinium sect. Rosulatae, Reiche, 1895

Gonzáles, Paúl, Montesinos-Tubée, Daniel B., Watson, John M., Cano, Asunción, Trinidad, Huber, Navarro, Eduardo, Jans, Harry, Sheader, Martin, Ballard, Harvey E. & Flores, Ana R., 2022, Viola ornata and Viola longibracteolata (Violaceae, subgen. Neoandinium), two rare, new rosulate species from southern Peru, Phytotaxa 571 (1), pp. 52-64 : 62

Key to taxa of Viola subg. Neoandinium sect. Rosulatae from the Peruvian Andes

1. Leaf blade crenate, dentate or pinnatifid ...........................................................................................................................................2.

- Leaf blade entire................................................................................................................................................................................7.

2. Leaf blade linear....................................................................................................................................................................... V. hillii

- Leaf blade lanceolate, ovate, oblong or spathulate............................................................................................................................3.

3. Plant laxly imbricate, stipules present. Bracteoles 1–4 mm long......................................................................................................4.

- Plant densely imbricate, stipules absent. Bracteoles 6–8 mm long...................................................................................................6.

4. Leaves 12–20 mm long, leaf blade pinnate to pinnatifid .................................................................................................. V. ferreyrae

- Leaves 9–12 mm long, leaf blade crenate .........................................................................................................................................5.

5. Leaf blade margin 8–10-crenate, 4-stipulate .................................................................................................................... V. granulosa

- Leaf blade margin 5-crenate, 2-stipulate ............................................................................................................................... V. tovarii

6. Leaf blade scarcely wider than pseudopetiole, margin 5-crenate. Bracteoles plane ............................................. V. longibracteolata

- Leaf blade 2 × wider than pseudopetiole, margin 11-crenate. Bracteoles 3-winged............................................................. V. ornata

7. Leaf blade plane, adaxial and abaxial surface alveolate-reticulate. Corolla orange, pink or red.................................... V. kermesina

- Leaf blade apex retrorse, adaxial surface smooth. Corolla white...................................................................................... V. replicata