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Choudhary, P. & S. S. Choudhary. 1989. Meiotic studies for determination of taxonomic relatedness in some taxa of the Caesalpiniaceae (Fabaceae). Kromosomo 54: 1787–1792.
Gill, L. S. & S. W. H. Husaini. 1981. Cytomorphological investigations of some species of the genus Cassia L. in Nigeria. Bull. Mus. Natl. Hist. Nat., B, Adansonia 4: 461–472.