Watson JM, Flores AR.

Upping their number, addressing their risk. Viola singularis (Violaceae) revisited, and an evaluation of sect. Andinium, its higher taxonomic group

. Phytotaxa [Internet]. 2014 Aug. 29 [cited 2025 Dec. 6];177(3):177–182. Available from: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.177.3.6