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 hispida it parasitizes the other fig wasp "Ceratosolen solmsi". The yet unnamed nematode species "Caenorhabditis sp. 35" has been found in Aceh, Indonesia, associated with the tree. Ficus hispida Ficus hispida is a small but well distributed species of tropical fig tree. It occurs in many parts of Asia and as far south east as Australia. There is a large variety of local common names. Like a number of ficus, the leaves are sandpapery to touch. An unusual feature is the figs which hang on long stems. In Australia the fruit are eaten by cassowaries and double-eyed fig parrots. Phayre's leaf