Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"127996 - Physostegia ledinghamii (B. Boivin) P. D. Cantino, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-117553. Accessed 10 Feb. 2025.