Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"126484 - Erigeron purpuratus Greene ssp. pallens (Cronquist) G. W. Douglas, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-112427. Accessed 28 Feb. 2025.