Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"61159 - Toxicodendron radicans (Linnaeus) Kuntze var. rydbergii (Small ex Rydb.) Erskine, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-85657. Accessed 17 Dec. 2024.