Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"134461 - Persicaria amphibia (L.) Delarbre var. emersa (Michaux) J. C. Hickman, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-139917. Accessed 13 May. 2025.