Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"18015 - Erigeron peregrinus (Pursh) Greene ssp. callianthemus (Greene) Cronquist, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-153454. Accessed 22 Jan. 2025.