Our treatment draws in part on the draft Fl. Madagasc. ms. of Leroy & Lescot. The name T. thouarsiana (Baill.) Cavaco & Keraudren (based on Olax thouarsiana, and not to be confused with O. thouarsii (DC.) Valeton), is regarded as occurring in the Mascarenes and is not known from Madagascar, despite some confusion in the past (see Bosser, 2002).