Abstract
Miconia manauara has been collected several times in two municipalities in the state of Amazonas, Brazil, and once in nearby Pará. It can be recognized among species in Miconia sect. Miconia by the leaves with obtuse to rounded bases, entire margins, cuspidate apices and five basal to shortly suprabasal nerves. The leaves also have glabrous mature adaxial leaf surfaces and the abaxial surface with two indument layers, the first consisting of moderate to dense, ferruginous, sessile stellate trichomes, 0.1–0.2 mm diam., and the second consisting of a dense, granulose-furfuraceous layer. The inflorescences are glomerulate, the 5-merous flowers have a caducous calyx, minutely papillose petals, ten stamens that are ventrally bilobed and with a small dorsal, obtuse tooth, and the ovaries are furfuraceous and usually covered by unbranched trichomes on their apices.
Resumo
Miconia manauara tem sido coletada várias vezes em dois municípios no estado do Amazonas e uma vez no Pará. Esta espécie pode ser reconhecida entre as espécies de Miconia sect. Miconia pelas folhas com base obtuse a arredondada, margem inteira, ápice cuspidado e cinco nervuras basais a curtamente suprabasais, e também com a face adaxial glabra e abaxial coberta por duas camadas de indumento, a primeira com tricomas estrelados 0.1–0.2 mm diam., sésseis, ferrugíneos, moderados a densos, e a segunda densamente granuloso-furfurácea. As inflorescências são glomeruladas, enquanto que as flores pentâmeras apresentam o cálice caduco, pétalas minutamente papilosas, dez estames ventralmente bilobados e com um pequeno dente dorsal obtuso, e ovário com ápice furfuráceo e geralmente coberto por tricomas simples.
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Acknowledgments
We would like to thank the curators at INPA, NY and US for access to the specimens cited here, and Darin Penneys and Carmen Ulloa for the helpful comments on the manuscript. Bobbi Angel made the line drawing. This research was partially supported by the NSF through the PBI Miconieae project (DEB-0818399).
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Goldenberg, R., Krasinski Caddah, M. & Michelangeli, F.A. A new species of Miconia (Melastomataceae) from Amazonas, Brazil. Brittonia 63, 245–249 (2011). https://doi.org/10.1007/s12228-010-9157-x
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DOI: https://doi.org/10.1007/s12228-010-9157-x