Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"72697 - Cassiope tetragona (L.) D. Don ssp. saximontana (Small) A. E. Porsild, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-72355. Accessed 09 May. 2025.