Phylogenetic Relationships of Allomaieta, Alloneuron, Cyphostyla, and Wurdastom (Melastomataceae) and the Resurrection of the Tribe Cyphostyleae

Autor: Heriberto David, Antoine N. Nicolas, Fabián A. Michelangeli, María Eugenia Morales-P
Rok vydání: 2011
Předmět:
Zdroj: International Journal of Plant Sciences. 172:1165-1178
ISSN: 1537-5315
1058-5893
Popis: In the Melastomataceae, flowers with superior ovaries usually develop into capsular fruits, while flowers with inferior or partially inferior ovaries develop into berries. The phylogenetic position and affinities of four enigmatic genera with inferior ovaries and capsular fruits, Allomaieta, Alloneuron, Cyphostyla, and Wurdastom, were investigated using three plastid loci (rbcL, ndhF, and rpl16) and morphological characters. These four genera have been placed at times in their own tribe, the Cyphostyleae, but they have also been placed in the Miconieae, and whether they form a group at all has also been the subject of debate. We find that these four genera form a well-supported group that can be diagnosed by the unique character combination of haplostemonous flowers (same number of anthers and petals), inferior ovaries, and capsular fruits. Most members of the tribe also have a calyptrate calyx, but the mode of dehiscing of the calyx varies across species. This character combination and the phylogenetic p...
Databáze: OpenAIRE