MAGOSWANA, L.; BOATWRIGHT, S. J. .; MAGEE, A. R.; MANNING, J. C. . Othonna koos-bekkeri Van Jaarsv. is a synonym of Othonna cerarioides Magoswana & J.C. Manning (Asteraceae: Othonninae). Bothalia, African Biodiversity & Conservation, [S. l.], v. 51, n. 2, 2021. DOI: 10.38201/btha.abc.v51.i2. Disponível em: https://abcjournal.org/index.php/BothaliaABC/article/view/295. Acesso em: 6 dec. 2021.