M. Struwig, S. Siebert, and A. Jordaan, “Pollen morphology of members of southern African Boerhavia and Commicarpus (Nyctaginaceae)”, ABC, vol. 43, no. 1, Jan. 2013, Accessed: Apr. 17, 2026. [Online]. Available: https://mail.abcjournal.org/index.php/abc/article/view/203