Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"103997 - Platanthera sparsiflora (S. Wats.) Schltr. var. ensifolia (Rydb.) Luer, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-15231. Accessed 16 Jun. 2025.