Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"23451 - Viola sororia Willd. var. affinis (Leconte) L. E. McKinney, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-161609. Accessed 05 Jan. 2025.