Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"111875 - Calystegia spithamaea (L.) Pursh ssp. stans (Michx.) Brummitt, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-88046. Accessed 23 Jan. 2025.