Mariosousa usumacintensis is a species of flowering plant in the family Fabaceae. It is native to Belize, Guatemala, Honduras, Southeast and Southwest Mexico (including the State of Tabasco), and Veracruz. It was named after the Río Usumacinta, near the location where the type specimen was collected.Cowan, C. P. 1983. Flora de Tabasco. Listados Florístisticos de México 1: 1–123Sousa Sánchez, M., M. Ricker & H. M. Hernández Macías. 2003. An index for the tree species of the family Leguminosae in Mexico. Harvard Papers in Botany 7(2): 381–398. It is a tree up to 15 m (50 feet) tall. Prickles are located at the bases of the petioles, each prickle with a large flat gland near the base.Lundell, Cyrus Longworth. 1940. Studies of tropical plants. Contributions from the University of Michigan Herbarium 4:3-32.
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