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Citation for Study 13703

Citation title: "What?s in a Name? Disentangling the Dicranum scoparium Species Complex (Dicranaceae, Bryophyta)".

Study name: "What?s in a Name? Disentangling the Dicranum scoparium Species Complex (Dicranaceae, Bryophyta)".

This study is part of submission 13703 (Status: Published).

Citation

Lang A.S., & Stech M. 2013. What?s in a Name? Disentangling the Dicranum scoparium Species Complex (Dicranaceae, Bryophyta). Systematic Biology, .

Authors

• Lang A.S. (submitter) 0031715274728
• Stech M.

Abstract

Dicranum is a large (c. 90 species) and taxonomically complex genus of mosses. Circumscriptions and relationships of many Dicranum species remain ambiguous due to the absence of a worldwide revision and comprehensive molecular phylogenetic analyses. In the present study, species circumscriptions of morphologically similar, and possibly closely related, Dicranum species (D. scoparium, D. bonjeanii, D. fuscescens, D. howellii, D. cf. japonicum, D. majus, D. nipponense, and D. spadiceum) are analysed based on chloroplast (rpoB, trnH-psbA, trnL-trnF, rps4-trnT, rps19-rpl2) and nuclear ribosomal ITS sequences. Contrary to their morphological resemblance and the presence of intergrading forms, all analysed species are molecularly separated and form well supported clades in the molecular phylogenetic reconstructions. The identity of two North American D. cf. scoparium specimens, which may represent a formerly separate taxon or a ?pseudo-cryptic? species, remains to be tested. Dicranum bonjeanii, D. howellii, D. cf. japonicum, D. nipponense, and D. scoparium (all sect. Dicranum) can be comprised as D. scoparium species complex, while D. majus (sect. Dicranum) and species currently considered to belong to other sections (D. fuscescens and D. spadiceum) are separated from this complex. Further supraspecific relationships remain largely unresolved based on the present molecular data. The significance of morphological characters for species identification are discussed. It is concluded that a combined morpho-molecular approach allows clear species circumscriptions in Dicranum, which is a promising result for the study of other taxonomically difficult complexes of closely related species in bryophytes.

Keywords

Chloroplast DNA, ITS, molecular phylogeny, species circumscriptions, morphology

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S13703
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref21590,
  	 author = {Annick S?verine Lang and Michael  Stech},
  	 title = {What?s in a Name? Disentangling the Dicranum scoparium Species Complex (Dicranaceae, Bryophyta)},
  	 year = {2013},
  	 keywords = {Chloroplast DNA, ITS, molecular phylogeny, species circumscriptions, morphology},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Systematic Biology},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {Dicranum is a large (c. 90 species) and taxonomically complex genus of mosses. Circumscriptions and relationships of many Dicranum species remain ambiguous due to the absence of a worldwide revision and comprehensive molecular phylogenetic analyses. In the present study, species circumscriptions of morphologically similar, and possibly closely related, Dicranum species (D. scoparium, D. bonjeanii, D. fuscescens, D. howellii, D. cf. japonicum, D. majus, D. nipponense, and D. spadiceum) are analysed based on chloroplast (rpoB, trnH-psbA, trnL-trnF, rps4-trnT, rps19-rpl2) and nuclear ribosomal ITS sequences. Contrary to their morphological resemblance and the presence of intergrading forms, all analysed species are molecularly separated and form well supported clades in the molecular phylogenetic reconstructions. The identity of two North American D. cf. scoparium specimens, which may represent a formerly separate taxon or a ?pseudo-cryptic? species, remains to be tested. Dicranum bonjeanii, D. howellii, D. cf. japonicum, D. nipponense, and D. scoparium (all sect. Dicranum) can be comprised as D. scoparium species complex, while D. majus (sect. Dicranum) and species currently considered to belong to other sections (D. fuscescens and D. spadiceum) are separated from this complex. Further supraspecific relationships remain largely unresolved based on the present molecular data. The significance of morphological characters for species identification are discussed. It is concluded that a combined morpho-molecular approach allows clear species circumscriptions in Dicranum, which is a promising result for the study of other taxonomically difficult complexes of closely related species in bryophytes.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 21590
  AU  - Lang,Annick S?verine
  AU  - Stech,Michael 
  T1  - What?s in a Name? Disentangling the Dicranum scoparium Species Complex (Dicranaceae, Bryophyta)
  PY  - 2013
  KW  - Chloroplast DNA
  KW  - ITS
  KW  - molecular phylogeny
  KW  - species circumscriptions
  KW  - morphology
  UR  - http://dx.doi.org/
  N2  - Dicranum is a large (c. 90 species) and taxonomically complex genus of mosses. Circumscriptions and relationships of many Dicranum species remain ambiguous due to the absence of a worldwide revision and comprehensive molecular phylogenetic analyses. In the present study, species circumscriptions of morphologically similar, and possibly closely related, Dicranum species (D. scoparium, D. bonjeanii, D. fuscescens, D. howellii, D. cf. japonicum, D. majus, D. nipponense, and D. spadiceum) are analysed based on chloroplast (rpoB, trnH-psbA, trnL-trnF, rps4-trnT, rps19-rpl2) and nuclear ribosomal ITS sequences. Contrary to their morphological resemblance and the presence of intergrading forms, all analysed species are molecularly separated and form well supported clades in the molecular phylogenetic reconstructions. The identity of two North American D. cf. scoparium specimens, which may represent a formerly separate taxon or a ?pseudo-cryptic? species, remains to be tested. Dicranum bonjeanii, D. howellii, D. cf. japonicum, D. nipponense, and D. scoparium (all sect. Dicranum) can be comprised as D. scoparium species complex, while D. majus (sect. Dicranum) and species currently considered to belong to other sections (D. fuscescens and D. spadiceum) are separated from this complex. Further supraspecific relationships remain largely unresolved based on the present molecular data. The significance of morphological characters for species identification are discussed. It is concluded that a combined morpho-molecular approach allows clear species circumscriptions in Dicranum, which is a promising result for the study of other taxonomically difficult complexes of closely related species in bryophytes.
  L3  - 
  JF  - Systematic Biology
  VL  - 
  IS  - 
  ER  -