Mariosousa heterophylla

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Mariosousa heterophylla, also called the palo blanco tree, palo liso, guinola, 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.

Summary from Wikipedia