Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"32994 - Equisetum arvense L. forma campestre (C. F. Schultz) Klinge, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-5962. Accessed 22 Apr. 2025.