Guarana (Portuguese guaraná) (IPA: [ɡu̯a.'ra.na], [ɡu̯a.'ɾa.na] or [ɡu̯a.'ɹa.na]), Paullinia cupana (syn. P. crysan, P. sorbilis), is a climbing plant in the Sapinaceae family, native to the Amazon basin and especially common, in Brazil. While guarana features large leaves and clusters of flowers, it is best known for its fruit, which is about the size of a coffee berry. Each fruit contains about one seed, which contains approximately five times as much caffeine as coffee beans.