Manning, John C., Jonathan Krieger, and Simon Luvo Magoswana. “Senecio Cymbalarifolius (L.) Less. Is the Correct Name for S. Sonchifolius (L.) J.C.Manning & Magoswana, Nom. Illeg. and Clarification of the Name S. Sonchifolius (L.) Moench (Asteraceae: Senecioneae)”. Bothalia, African Biodiversity & Conservation 50, no. 1 (July 14, 2020). Accessed November 26, 2020. http://abcjournal.org/index.php/BothaliaABC/article/view/167.