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Abstract Detail


Systematics Section/ASPT

Clavijo, Laura [1], Clark, John L. [2].

Molecular phylogeny and evolution of floral traits in the Neotropical genus Drymonia (Gesneriaceae).

The genus Drymonia with 75 recognized species and 10 or more undescribed species is one of the most morphologically variable and largest genera within the Neotropical Gesneriaceae. The genus ranges from Mexico and the Caribbean south through French Guiana, Brazil and Bolivia, and its center of diversity is western Colombia and adjacent northern Ecuador. Here we presented a molecular-based phylogenies from three markers (ITS, ETS, and matKR) of 100+ species of Drymonia and related genera, which supports the monophyly of Drymonia and its close relationship to a clade formed by Columnea, Glossoloma and Alloplectus.Our results have changed the circumscription of Drymonia to include morphological variation in flower shapes and fruit types not traditionally recognized in Drymonia.Corolla traits associated with anti-bee pollination mechanisms are convergent such as hypocyrtoid corollas and brightly colored flowers. Flower traits associated with euglossine bee pollination such as campanulate flowers and poricidal anther dehiscence are symplesiomorphic.

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1 - University Of Alabama, Biological Sciences, P.O. Box 870345, 425 Mary Harmon Bryant Hall, Tuscaloosa, AL, 35487-0345, USA
2 - University of Alabama, Biological Sciences, Box 870345, Tuscaloosa, AL, 35487, USA

Keywords:
Gesneriaceae
Drymonia
Molecular phylogeny
Pollinator shifts.

Presentation Type: Oral Paper:Papers for Sections
Session: 43
Location: Delaware C/Hyatt
Date: Wednesday, July 11th, 2012
Time: 9:00 AM
Number: 43005
Abstract ID:822


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