Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"120906 - Spiraea betulifolia Pall. var. corymbosa (Raf.) Maxim., University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-135639. Accessed 24 Apr. 2025.