Martin Claire auteur aut IRD Little D. P. auteur aut IRD Goldenberg R. auteur aut IRD Michelangeli F. auteur aut IRD text journalArticle eng text/pdf born digital access Melastomataceae is a tropical family of 4500-5000 species divided into nine tribes. The largest tribe, Miconieae, is composed of approximately 2200 species in 30 genera and is found exclusively in the Neotropics. Previous phylogenetic analyses of the Miconieae have suggested that many of the genera are derived from a paraphyletic Miconia. However, these analyses only included six species of the large genus Leandra, so its phylogenetic affinities remained unclear. As currently defined Leandra is characterized by acute petals and terminal inflorescences, but some species of Miconia, Clidemia and Ossaea also have these characters. In this study, we present an analysis of nrITS sequence data for a sample of 63 species of Leandra. The genus is clearly resolved as polyphyletic, but some distinct and well-supported clades exist. Some of these partially correspond to sections recognized in the nineteenth century by Cogniaux, or to geographic distribution. The distribution of seed structure characters is better correlated with the phylogeny than traditional characters, such as petal morphology. Seed appendages in Leandra have evolved independently at least four times. specialized 076 24 3 315-327 2008 0748-3007 https://www.documentation.ird.fr/hor/fdi:010042595 10.1111/j.1096-0031.2007.00185.x 0748-3007 [F B010042595] https://www.documentation.ird.fr/hor/fdi:010042595 https://www.documentation.ird.fr/intranet/publi/2008/06/010042595.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2008-06-27 2017-08-23 fdi:010042595 fre