Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"13586 - Chimaphila umbellata (L.) W. P. C. Barton var. occidentalis (Rydb.) S. F. Blake, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-103966. Accessed 06 Feb. 2025.