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Abstract Detail


Systematics Section/ASPT

Roalson, Eric [1], Hipp, Andrew [2], Chung, Kyong-Sook [3], Waterway, Marcia [4], Li, Rong [5], Yi, Tingshuang [5].

Classification,biogeography, and morphological patterns of diversification in Carex subgenus Vignea (Cyperaceae).

Carex (Cyperaceae) is one of the most diverse and most taxonomically difficult groups of angiosperms, with more than 2000 recognized species and 70+ sections. Taxonomy of the genus is further complicated by the fact that Carex is paraphyletic relative to the other four genera of Cariceae. One of the few Carex lineages consistently supported as monophyletic is Carex subgenus Vignea. Relationships within Vignea,however, are poorly understood, and molecular phylogenetic analyses to date have suggested that most sections are polyphyletic. Here we provide an analysis of diversification patterns in Vignea based on six nDNA and four cpDNA gene regions sequenced for more than 500 samples of more than 240 taxa. Using the resulting phylogenetic hypotheses, we address morphological and historical biogeographic patterns and their relationship to previous classifications of the subgenus.

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1 - Washington State University, School Of Biological Sciences, Abelson Hall 339, Pullman, WA, 99164-4236, USA
2 - The Morton Arboretum, 4100 Illinois Route 53, Lisle, IL, 60532-1293, USA
3 - The Morton Arboretum, Department Of Botany And Microbiology, Illinois 4100 Route 53, Lisle, IL, 60532-1293, USA
4 - MCGILL UNIVERSITY, PLANT SCIENCE-MACDONALD CAMPUS, 21111 LAKESHORE, STE ANNE DE BELLEVUE, QC, H9X 3V9, Canada
5 - Kunming Institute of Botany, Key Laboratory of Plant Biodiversity and Biogeography, Chinese Academy of Sciences, Kunming, Yunnan , 650204 , China

Keywords:
Cyperaceae
Carex
Vignea
classification
biogeography.

Presentation Type: Oral Paper:Papers for Sections
Session: 15
Location: Franklin B/Hyatt
Date: Monday, July 9th, 2012
Time: 2:45 PM
Number: 15006
Abstract ID:897


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