Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"136817 - Betula glandulosa Michx. × Betula nana L. ssp. exilis (Sukaczev) Hultén, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-158654. Accessed 20 May. 2024.