There was one illustrations found for H. Lang
Lophopetalum sp.J.B.L. Pierre, Fl. Forest. Cochinch., vol. 3 : t. 306, fig. A (1884) [E. Delpy]
2 788907 Piaranthus framesii PillansI.B. Pole Evans, Fl. Pl. Afr., vol. 15 : t. 597 (1935) [H. Lang]
Lophopetalum sp.2 788907 Piaranthus framesii Pillans