Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"29917 - Taraxacum umbrinum Dahlst. ex G. E. Haglund, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-110910. Accessed 12 Apr. 2025.