Monographs Details: Miconia triplinervis subsp. exalluvia Wurdack
Authority: Wurdack, John J. 1967. Plants collected in Ecuador by W. H. Camp. Melastomataceae. Mem. New York Bot. Gard. 16: 1-45.
Description:Latin Diagnosis - A subspecie typica differt foliis distincte plinervatis nervis primariis laterali-bus 0.7-2 cm supra laminae basim divergentibus.
Discussion:Type Collection: J. J. Wurdack 2177 (holotype US 2404424; isotype USM), collected in rain forest along the Río Santiago 3-5 km above mouth, Prov. Bagua, Depto. Amazonas, Peru, elev. 250-300 m, 8-13 Oct. 1962.
Paratypes: Mexia 6361 (US), from heights to right of Río Santiago, above Pongo de Manseriche, Depto. Loreto, Peru, elev. 270 m; Camp E-1430 (NY, US), from uplands above the Río Upano just south of the Río Chupiantza, Santiago-Zamora, Ecuador, elev. 670 m.
The wide-ranging typical subspecies has basally inserted leaf primaries and usually strongly angled branchlets (but see Pittier 4303 from Panama and Haught 4913 from Colombia). Subspecies exalluvia has nearly terete branchlets. There seem to be no floral differences between the subspecies; unfortunately only a few flowers have been available from the multitude of collections, but the commonest ovary-cell number seems to be 4 (with a few 3 and a few 5). In the Pongo de Manseriche region, the typical subspecies also occurs (Mexia 6109, Wurdack 2492), but only on the flood plain, whereas subsp. exalluvia grows on flood-free slopes.