The imposing peaks of Angasima Tepui (2250 m) and Upuigma Tepui (2100 m) lie south of the much larger Chimantá Massif, from which they are separated by the Río Aparurén valley. Three Heliamphora species are native to Angasima Tepui: the undescribed endemic H. sp. 'Angasima Tepui' and two species shared with the nearby Chimantá Massif (H. huberi and H. pulchella). Only the range of H. pulchella extends to the isolated peak of Upuigma Tepui.