Maguire, Bassett & Wurdack, John J. 1964. The botany of the Guayana Highland--Part V. Mem. New York Bot. Gard. 10: 1-278.
Melastomataceae
Species Description - Lamina apice graditer acuminata supra sparse breviterque setosa pilis laxis p. p. caduce glanduliferis.
Type. Tree 10 m with slender trunk, leaves membranous, dull green above, paler green beneath with raised nerves, calyx pale green, petals in bud white with pink tinge, anthers on one side, curved, dull white, the connective brownish, filaments dull mauve, forested middle slopes near Rio Tirica, Agparaman-tepui, Chimanta Massif, Edo. Bolivar, Venezuela, alt. 1365 m, 5 Mar 1955, J. A. Steyermark & J. J. Wurdack 1261 (holotype US 2342419). Paratypes. VENEZUELA, Edo. Bolivar. Chimanta Massif: escarpment base, Torono-tepui, Steyermark 75515-A; forested slopes of Abacapa-tepui, Steyermark 75184. Terr. Amazonas. Cerro Yutaje: Caiio Yutaje, alt. 1500 m, Maguire & Maguire 35350. Cerro de la Neblina: slope forest, alt. 700 m, Maguire, Wurdack, & Maguire 42026. Sierra Parima: headwaters of Rio Siapa and Rio Padauiri, Brazilian boundary, alt. 1340 m, F. Cardona 1509.