Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"142835 - Sonchus arvensis L. ssp. uliginosus (M. Bieberstein) Nyman, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-199352. Accessed 23 Dec. 2024.