Szkudlarz, Piotr. “Seed Morphology and Anatomy of Hypericum Elegans Steph. Ex Willd”. Biodiversity: Research and Conservation 35 (March 11, 2015): 15–18. Accessed December 8, 2025. https://pressto.amu.edu.pl/index.php/biorc/article/view/biorc-2014-0017.