Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"65421 - Plantago hookeriana Fisch. & C. A. Mey. var. californica Poe, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-88800. Accessed 27 Mar. 2025.