ZHOU, Y.-D.; AMENU, S. G.; MWACHALA, G.; HU, G.-W.; WANG, Q.-F. Reinstatement of the independent specific status of <em>Oldenlandia violacea</em> (Rubiaceae) from the synonymy of <em>O. monanthos</em>. Phytotaxa, [S. l.], v. 507, n. 4, p. 293–300, 2021. DOI: 10.11646/phytotaxa.507.4.3. Disponível em: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.507.4.3. Acesso em: 25 jan. 2025.