Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"95810 - Aster lanceolatus Willd. ssp. hesperius (A. Gray) Semple & Chmiel., University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-150059. Accessed 16 Mar. 2025.