Abstract Detail

Systematics Section/ASPT

Jiménez-Mejías, Pedro [1], Starr, Julian R [2], Naczi, Robert F.C. [3], Eric, Roalson H [1], Waterway, Marcia [4], Hipp, Andrew [5], Marlene, Hahn [5], Kate, Lueders [5], Global Carex Group, * [6].

First steps towards a global Carex (Cyperaceae) phylogeny.

Carex is a cosmopolitan genus that is among the 4 largest within angiosperms, and indeed the largest in the temperate zone. It has not undergone a worldwide revision since 1909. A new NSF-ARTS-funded project has brought together researchers from around the world in a coordinated effort to create a globally sampled Carex phylogeny in an effort to revise the sectional reclassification of the clade. We have gathered together sequences available in GenBank and new unpublished sequences from the NSF-ARTS project members’ materials. Sampling of North American, European and North African taxa is nearly complete. New species sampling is focussed on previously undersampled areas, particularly China, southeast Asia, and South America. Currently, the sampling covers around the 60% of the total estimated number of species. Our supermatrix approach using a few markers to create a phylogenetic backbone seems to provide good phylogenetic resolution of clade membership for species across the genus. Biogeographic reconstructions to date suggest that eastern Asia has played a key role in the origin and diversification of the genus. Global sampling is revealing that many traditionally recognized sections are para- or polyphyletic. Clades vary in their endemicity – some are very widespread while others are restricted to a single continent or region.  An updated and more robust revised phylogenetic classification will also provide new insights into traits and diversification patterns of the genus.

1 - Washington State University, School of Biological Sciences, Abelson Hall 339, Pullman, WA, 99164-4236, USA
2 - University of Ottawa, 30 Marie Curie, Ottawa, ON, K1N 6n5, Canada
3 - The New York Botanical Garden, William and Lynda Steere Herbarium, 2900 Southern Blvd, Bronx, NY, 10458-5126, USA
4 - McGill University, Plant Science-Macdonal Campus, 21111 Lakeshore, Ste Anne de Bellevue, QC, H9X 3V9, Canada
5 - The Morton Arboretum, 4100 Illinois Route 53, Lisle, IL, 60532-1293, USA
6 - * http://systematics.mortonarb.org/cariceae/participants_view

Keywords:
supermatrix
Worldwide revision
systematics
Carex
Cyperaceae
Uncinia
Kobresia
Schoenoxiphium
Cariceae.

Presentation Type: Oral Paper:Papers for Sections
Session: 17
Location: Payette/Boise Centre
Date: Tuesday, July 29th, 2014
Time: 11:30 AM
Number: 17014
Abstract ID:663
Candidate for Awards:George R. Cooley Award