Havardia albicans is a perennial tree of the family Fabaceae that grows to 5 meters tall. It is native to Mexico, the Caribbean and Central America, in regions around the Yucatan Peninsula. Common names for it include chucum and cuisache.[1] It is reputed to be psychoactive.[2] Its sap can be boiled and added to plaster to make waterproof stucco, and this may explain the longevity of Mayan plaster.[3]
