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Abstract Detail

Pteridological Section/AFS

Schuettpelz, Eric [1], Kessler, Michael [2], Chen, Cheng-Wei [3], Huiet, Layne [4], Pryer, Kathleen M [5].

New insights into the generic classification of vittarioid ferns.

Vittarioid ferns compose a well-supported clade of highly simplified, canopy-dwelling epiphytes. Generic circumscriptions within this group of about 120 species were among the first in ferns to be evaluated and revised based on molecular phylogenetic data. Early analyses of rbcL sequences revealed strong geographic structure within the vittarioids and demonstrated that the two largest genera (as then defined) each had phylogenetically distinct Neotropical and Paleotropical components. The results of subsequent studies, which included as many as 36 individuals from 33 species but still relied on a single gene, were generally consistent with prior findings. Here, we build upon previous datasets, incorporating many more samples and additional plastid markers. Analysis of our larger dataset serves to better characterize known lineages, reveals new lineages, exposes some inconsistencies in the published data, and ultimately uncovers an underlying geographic signal that is even stronger than already recognized.

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1 - Smithsonian Institution, Department of Botany (MRC 166), National Museum of Natural History, PO Box 37012, Washington, DC, 20013-7012, USA
2 - University of Zurich, Institute of Systematic Botany, Zurich, 8008, Switzerland
3 - Taiwan Forestry Research Institute, Division of Silviculture, Taipei, 10066, TAIWAN
4 - Duke University, Department of Biology, PO Box 90338, Durham, NC, 27708, USA
5 - Duke University, Department of Biology, Box 90338, Durham, NC, 27708, USA


Presentation Type: Oral Paper:Papers for Sections
Session: 12
Location: Pines North/Boise Centre
Date: Monday, July 28th, 2014
Time: 3:45 PM
Number: 12009
Abstract ID:393
Candidate for Awards:None

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