Szkudlarz, Piotr. “Taxonomy of South African Ericas (Erica L.) and Differentiation of Their Seeds”. Biodiversity: Research and Conservation, no. 1-2 (June 30, 2006): 25–30. Accessed January 16, 2026. https://pressto.amu.edu.pl/index.php/biorc/article/view/40946.