2 literature references:

Author: Fantz,P.R.
Year: 1992
Title:
Source: J.Econ.Bot.45(4):511-520.Ethnobotany of Clitoria in SE Asia.
Author: Du Puy,D.J. et al.
Year: 2002
Title:
Source: The Leguminosae of Madagascar. RBG Kew.