Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"129620 - Populus balsamifera L. ssp. trichocarpa (Torr. & A. Gray) Brayshaw, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-114318. Accessed 08 Apr. 2025.