2 literature references:

Author: Gillett,J.B. et al.
Year: 1971
Title:
Source: Papilionoideae.In:Fl.Trop.E.Africa,Milne-Redhead & Polhill
Author: Verdcourt,B.
Year: 1979
Title:
Source: A Manual of New Guinea Legumes. Office of Forests, Lae,PNG