Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"81518 - Aster pilosus Willd. var. pringlei (A. Gray) S. F. Blake, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-150101. Accessed 24 Mar. 2025.