Cojobana, or yopo, is native to Hispaniola, Puerto Rico, the Lesser Antilles, northern South America, Brazil, and Paraguay. It reaches a height of 60 feet, with a trunk 1 foot or more in diameter. The bark is very thick, deeply grooved, with many crests and warts. The leaves are up to 9 inches long and have thousands of leaflets. Inflorescences are about half an inch in diameter. Fruits are pods up to 8 inches long that open on both sides to release about ten seeds. It flowers from autumn to spring, the fruits produced from the previous flowering open mostly in spring. Taino indians ground the seeds to produce an hallucinogenic powder that was inhaled as medicine and to communicate with spirits. The active compound in the seeds is similar to one isolated from the poison glands of the Surinam toad. The generic name refers to the absence of glands on the flower's anthers. The species name probably refers to the dispersal of the species by man.

The photographed tree is across from the Piñero Building and is the only member of the species in the campus.

Anadenanthera peregrina (Fabaceae)