Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"129361 - Oenothera biennis L. var. hirsutissima A. Gray ex S. Watson, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-114060. Accessed 12 Jul. 2025.