Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"100697 - Potamogeton perfoliatus L. var. bupleuroides (Fern.) Farwell, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-657. Accessed 30 Apr. 2025.