Mariosousa_willardiana
Mariosousa heterophylla
Species of legume
Mariosousa heterophylla, also called the palo blanco tree (which is also applied to Ipomoea arborescens),[3] palo liso, guinola,[4] and Willard acacia, is a normally evergreen mimosoid plant in the genus Mariosousa native to Mexico. The Spanish common name translates into 'white stick', defining its peeling white bark. A compound called willardiine, that acts as an agonist in glutamate receptors, can be isolated from M. heterophylla.[5][6]