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Abstract Detail


Systematics/Phytogeography / Taxonomie/ Section

Hinchliff, Cody [1], Roalson, Eric [2], Carey, TImothy [2].

Origins of Eleocharis (Cyperaceae): placing the root of a isloated lineage and an assessment of the phylogenetic position of Websteria, Egleria, and Chillania.

Eleocharis R.Br. is a cosmopolitan genus of economic and ecological importance consisting of about 250 species. Because the genus is morphologically confusing and dissimilar from closely related genera, the phylogenetic relationships within Eleocharis and among it and other Cyperaceae genera have never been adequately described. In particular, the monotypic New World genera Chillania Roiv., Egleria G. Eiten, and Websteria S. H. Wright show morphological characteristics that suggest that they may be nested within Eleocharis. Additionally, several conflicting hypotheses exist in the current literature regarding the placement of the clade containing Eleocharis, Chillania, Egleria, and Websteria (the Eleocharidae), but no well-supported, multi-gene phylogeny addressing this issue has yet been published. This presentation will seek to provide a phylogenetic context for the Eleocharidae, and will also address some of the infrageneric relationships among major clades of Eleocharis as they are currently described.


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1 - Washington State University, School of Biological Sciences, 239C Abelson Hall, Pullman, WA, 99164, USA
2 - Washington State University, School of Biological Sciences, Po Box 644236, Pullman, Washington, 99164-4236, USA

Keywords:
Eleocharis R. Br.
Websteria S. H. Wright
Chillania Roiv.
Egleria G. Eiten.

Presentation Type: Oral Paper:Papers for Sections
Session: 36
Location: 157/Law
Date: Tuesday, July 29th, 2008
Time: 9:45 AM
Number: 36008
Abstract ID:457


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