DREYER, L. L.; ROETS, F.; OBERLANDER, K. C. Two new Oxalis (Oxalidaceae) species from the Richtersveld National Park, South Africa. Phytotaxa, Auckland, New Zealand, v. 89, n. 2, p. 53–63, 2013. DOI: 10.11646/phytotaxa.89.2.2. Disponível em: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.89.2.2. Acesso em: 5 dec. 2025.