Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"101613 - Polanisia dodecandra (L.) DC. ssp. trachysperma (Torr. & A. Gray) H. H. Iltis, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-83870. Accessed 26 Apr. 2025.