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''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 gathered from ''Castilla elastica'' was converted into usable rubber by mixing the latex with the juice of the morning glory species ''Ipomoea alba'' which, conveniently, is typically found in the wild as a vine climbing ''Castilla elastica''. The rubber produced by this method found several uses, including most notably, the manufacture of balls for the Mesoamerican ballgame ''ōllamaliztli''. The Aztec (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'';〔(【引用サイトリンク】title=''Castilla elastica'' )〕 in Spanish it is known as palo de hule. ==Subspecies== *''Castilla elastica'' ssp. ''costaricana'' (Liebm.) C.C.Berg *''Castilla elastica'' ssp. ''elastica'' (Castilloa rubber) common name: caucho,castilloa rubber. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Castilla elastica」の詳細全文を読む スポンサード リンク
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