Gomes M (2003) Taxonomic reassessment of several species of the genera Coussarea Aubl. and Faramea Aubl. (Rubiaceae, tribe Coussareae). Acta Botanica Brasilica 17(3): 449-466. doi: 10.1590/S0102-33062003000300011.
There is no corrections for Coussarea meridionalis var. porophylla yet.