Canadensys: University of Alberta Vascular Plant Herbarium (ALTA-VP)
													
													
														Canadensys, operated from the Université de Montréal Biodiversity Centre
													
												"42126 - Bidens cernua L., University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search-test.museums.ualberta.ca/12-150644. Accessed 31 Oct. 2025.