SWANEPOEL, W.; DEXTER, K. G.; LOISEAU, O.; WYK, A. E. V. Reinstatement of the name Petalidium ovatum (Acanthaceae), with an amplified description of the species. Phytotaxa, Auckland, New Zealand, v. 626, n. 3, p. 159–169, 2023. DOI: 10.11646/phytotaxa.626.3.2. Disponível em: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.626.3.2. Acesso em: 18 may. 2025.