“SEM Study of Leaf Epidermis and Spores of Nine Species Of Dryopteris Adans. From Shandong Province, China”. Bangladesh Journal of Botany 51, no. 40 (January 18, 2023): 951–960. Accessed June 26, 2026. https://www.banglajol.info/index.php/BJB/article/view/63839.