Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"140522 - Symphyotrichum ciliatum (Ledebour) G.L. Nesom × Symphyotrichum frondosum (Nuttall) G.L. Nesom, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-167761. Accessed 27 Apr. 2025.