Citrullus Schrad. ex Eckl. & Zeyh. Citrullus Schrad. ex Eckl. & Zeyh., Enum. Pl. Afr. Austral. 2: 279. 1836 sec. Schaefer & Renner 2011=Colocynthis Mill., Gard. Dict. Abr. (ed. 4). 1754 syn. sec. Jeffrey 1990