Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"143714 - Xanthisma spinulosum (Pursh) D. R. Morgan & R. L. Hartm., University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-199988. Accessed 08 Jul. 2025.