Figueiredo, E. & Smith, G.F. (2020)

Friedrich Welwitsch and his contributions to the exploration and study of the flora of São Tomé and Príncipe, Gulf of Guinea, with typification of three names described from his collections

. Phytotaxa 459 (3): 227–234. https://doi.org/10.11646/phytotaxa.459.3.4