L. Dreyer, L., Roets, F., & C. Oberlander, K. (2017).

Two new Oxalis (Oxalidaceae) species, including 5 varieties, from the Richtersveld of South Africa

. Phytotaxa, 314(2), 231–240. https://doi.org/10.11646/phytotaxa.314.2.4