Castilla elastica (Nahuatl) word for rubber was "ulli / olli", from which their word for the ballgame derived), and also their name for the ancient people they associated with the origin of the ballgame, the Olmecs ("olmeca": "rubber people"). The Nahuatl word for the tree of "Castilla elastica" is olicuáhuitl; in Spanish it is known as palo de hule. Caucho, castilloa rubber. Castilla elastica Castilla elastica, the Panama rubber tree, is a tree native to the tropical areas of Mexico, Central America, and northern South America. It was the principal source of latex among the Mesoamerican peoples in pre-Columbian times. The latex
Ficus amplissima surface covered with annular scars and a pale yellow . "Ficus amplissima" typically begins as an epiphyte in the branch of a tree that grows aerial roots that can provide nutrients when they reach soil. The aerial roots can surround the trunk of the host tree, which, combined with the growth of "F. amplissima" in the branches, can eventually kill the host tree. "Ficus amplissima" displays a syconium type of inflorescence (arrangement of the flowers on a plant) borne by all figs (genus "Ficus"), formed by an enlarged, fleshy, hollow receptacle with multiple ovaries on the inside surface. It is