Monographs Details: Cassia javanica var. microcalyx H.S.Irwin & Barneby
Authors:Howard S. Irwin, Rupert C. Barneby
Authority: Irwin, Howard S. & Barneby, Rupert C. 1982. The American Cassiinae. A synoptical revision of Leguminosae tribe Cassieae subtrib Cassiinae in the New World. Mem. New York Bot. Gard. 35, part 1: 1-454.
Description:Variety Description - The var. microcalyx appears to replace other forms of C. javanica in Sumatra and Borneo, except insofar as var. indochinensis is planted for ornament. Its tiny calyx, narrow stipules and small fertile anthers are distinctive. One introduction at Rio Pedras, Puerto Rico (Little 16346) appears to belong here and may be the model for the figure in Wadsworth, Common Trees Pto. Rico 172, fig. 73, 1964; but as var. indochinensis is also on the island we cannot be certain of this identification.
Distribution:Puerto Rico South America