Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"96681 - Arnica louiseana Farr var. frigida (C. A. Mey. ex Iljin) S. L. Welsh, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-142468. Accessed 21 Mar. 2025.