Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"117042 - Cypripedium parviflorum Salisb. var. pubescens (Willd.) O. W. Knight, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-78465. Accessed 16 May. 2025.