Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"19443 - Hamamelis vernalis Sarg. var. tomentella (Rehder) E. J. Palmer, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-84627. Accessed 05 May. 2025.