Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"57891 - Descurainia pinnata (Walter) Britton ssp. nelsonii (Rydb.) Detling, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-119065. Accessed 29 Jan. 2025.