Manning, John, and Cornelia Klak. “New Infrageneric Taxa in Leucospermum (Proteaceae) and Tetragonia L. (Aizoaceae) in Southern Africa”. African Biodiversity & Conservation 52, no. 1 (July 18, 2022). Accessed April 17, 2026. https://mail.abcjournal.org/index.php/abc/article/view/357.