Zenkteler, Elżbieta, Magdalena Ślachetka, and Kornel M. Michalak. “Characteristics of Frond Stipe Nectaries in Two Subspecies of Pteridium Aquilinum (L.) Kuhn in Poland”. Biodiversity: Research and Conservation 69 (March 31, 2023): 55–62. Accessed September 27, 2024. https://pressto.amu.edu.pl/index.php/biorc/article/view/40521.