Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"105441 - Oxytropis nigrescens (Pall.) Fisch. ex DC. ssp. pygmaea (Pall.) Hultén, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-103022. Accessed 11 Feb. 2025.