Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"116343 - Saxifraga nelsoniana D. Don ssp. porsildiana (Calder & Savile) Hultén, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-73379. Accessed 14 Jul. 2025.