Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"100618 - Potamogeton epihydrus Raf. var. nuttallii (Cham. & Schl.) Fern., University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-391. Accessed 03 Apr. 2025.