4 literature references:

Author: Irwin,H.S. & Barneby,R.C.
Year: 1982
Title:
Source: Mem.New York Bot.Gard.35:1-918[in 2 parts]American Cassiinae
Author: Rudd,V.E.
Year: 1991
Title:
Source: Flora of Ceylon 7: 34-107. Caesalpinioideae
Author: Rudd,V.E.
Year: 1991
Title:
Source: A Revised Handbook of the Flora of Ceylon 7: 108-381.
Author: Welsh,S.L.
Year: 1998
Title:
Source: Flora Societensis