Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"32356 - Piptatheropsis exigua (Thurb.) Romasch., P. M. Peterson & Soreng, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-74537. Accessed 22 Feb. 2025.