Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"136143 - Ambrosia ambrosioides (Cav.) W. W. Payne × Ambrosia salsola (Torr. & A. Gray) Strother & B. G. Baldwin, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-159633. Accessed 13 May. 2025.