Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"56367 - Ratibida columnaris (Pursh) D. Don var. pulcherrima (DC.) D. Don, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-164978. Accessed 30 Jan. 2025.