Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"36188 - Carex umbellata Schkuhr ex Willd. forma vicina (Dewey) Wiegand, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-97106. Accessed 11 Feb. 2025.