Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
Canadensys, operated from the Université de Montréal Biodiversity Centre
"44276 - Dryopteris borreri (Newman) V. I. Krecz. × Dryopteris filix-mas (L.) Schott, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/12-17979. Accessed 16 Mar. 2025.