Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"134688 - Stachys chamissonis Bentham var. cooleyae (A. Heller) G. Mulligan & D. B. Munro, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-128592. Accessed 29 Apr. 2025.