Figueiredo, E., Soares, M., Seibert, G., Smith, G. F. & Faden, R. B. (2009). The botany of the Cunene-Zambezi expedition with notes on Hugo Baum (1867-1950). Bothalia: African Biodiversity and Conservation, 39(2), 185?211. https://doi.org/10.4102/abc.v39i2.244