MCKENZIE, R. J.; DOLD, A. P. Lectotypification of Othonna crassifolia Harv., a replaced synonym of Crassothonna capensis (Asteraceae, Senecioneae). Phytotaxa, Auckland, New Zealand, v. 618, n. 3, p. 296–300, 2023. DOI: 10.11646/phytotaxa.618.3.8. Disponível em: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.618.3.8. Acesso em: 6 dec. 2025.