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CONTRIBUTIONS TO THE KNOWLEDGE OF CAMBODIAN CYPERACEAE

Published online by Cambridge University Press:  18 March 2019

K. Tremetsberger ,
S. Hameister ,
D. A. Simpson  and
K.-G. Bernhardt
K. Tremetsberger*
Affiliation:
Institute of Botany, University of Natural Resources and Life Sciences, Vienna, Gregor-Mendel-Straße 33, 1180 Vienna, Austria. E-mail for correspondence: karin.tremetsberger@boku.ac.at
S. Hameister
Affiliation:
Institute of Botany, University of Natural Resources and Life Sciences, Vienna, Gregor-Mendel-Straße 33, 1180 Vienna, Austria. E-mail for correspondence: karin.tremetsberger@boku.ac.at
D. A. Simpson
Affiliation:
Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB, UK
K.-G. Bernhardt
Affiliation:
Institute of Botany, University of Natural Resources and Life Sciences, Vienna, Gregor-Mendel-Straße 33, 1180 Vienna, Austria. E-mail for correspondence: karin.tremetsberger@boku.ac.at
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Abstract

To date, there are very few sequence data for Cyperaceae from mainland Southeast Asia. The aim of the present study was to contribute nuclear ribosomal internal transcribed spacer (ITS) sequences of selected species of Cambodian Cyperaceae to the overall phylogeny of the family. We generated ITS sequences of 38 accessions representing 26 species from Cambodia and used these sequences for phylogenetic analysis together with similar sequences from the National Center for Biotechnology Information GenBank. Our results corroborate recent phylogenetic work in the family and largely confirm established tribal relationships. The backbone of the phylogenetic tree of species-rich genera that have undergone rapid radiations is often weakly resolved (e.g. in Fimbristylis and in the C4 clade of Cyperus). Cryptic variation was revealed in the taxonomically difficult group of Fimbristylis dichotoma, with samples of this taxon appearing in two distinct clades within Fimbristylis. Further addition of geographically spread accessions of taxa will improve our understanding of the complex biogeographical history of the genera in the family. Eleocharis koyamae Tremetsb. & D.A.Simpson is proposed as a new name for E. macrorrhiza T. Koyama.

Keywords

CyperusFimbristylisinternal transcribed spacermainland Southeast Asiaphylogenystructure-based alignment
Type
Articles
Information
Edinburgh Journal of Botany , Volume 76 , Issue 2 , July 2019 , pp. 197 - 220
Copyright
© Trustees of the Royal Botanic Garden Edinburgh (2019) 

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