Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"6335 - Alnus incana (L.) Moench ssp. tenuifolia (Nutt.) Breitung, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-101717. Accessed 28 Mar. 2025.