"1982"^^ . "Irwin, H. S. & Barneby, R. C. 1982. The American Cassiinae: a synoptical revision of Leguminosae tribe Cassieae subtribe Cassiinae in the New World. Memoirs of the New York Botanical Garden, 35(1-2): 1-918." . . . . "Irwin & Barneby (1982)" . . "Irwin & Barneby (1982)" . . "1982"^^ .