Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"30242 - Dryas drummondii Richardson ex Hook. var. tomentosa L. O. Williams, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-102583. Accessed 24 Apr. 2025.