BARKER, E. The George F. Ledingham herbarium, University of Regina. Blue Jay, [S. l.], v. 67, n. 2, 2009. DOI: 10.29173/bluejay5764. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/5764. Acesso em: 24 jun. 2022.