Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"105616 - Fraxinus pennsylvanica Marshall var. subintegerrima (Vahl) Fernald, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search-test.museums.ualberta.ca/12-87472. Accessed 26 Oct. 2025.