Plant Systematics and Evolution

, Volume 258, Issue 3–4, pp 227–250

Goodbye or welcome Gondwana? – insights into the phylogenetic biogeography of the leafy liverwort Plagiochila with a description of Proskauera, gen. nov. (Plagiochilaceae, Jungermanniales)

  • J. Heinrichs
  • M. Lindner
  • H. Groth
  • J. Hentschel
  • K. Feldberg
  • C. Renker
  • J. J. Engel
  • M. von Konrat
  • D. G. Long
  • H. Schneider
Article

Abstract

Molecular phylogenies based on chloroplast gene rps4 sequences and nuclear ribosomal ITS sequences have been generated to investigate relationships among species and putative segregates in Plagiochila (Plagiochilaceae), the largest genus of leafy liverworts. About a fourth of the ca. 450 accepted binomials of Plagiochilaceae are included in these phylogenetic analyses, several represented by multiple accessions. A clade with Chiastocaulon, Pedinophyllum, and Plagiochilion is placed sister to a clade with numerous accessions of Plagiochila. Plagiochila pleurata and P. fruticella are resolved sister to the remainder of Plagiochilaceae and transferred to the new Australasian genus Proskauera which differs from all other Plagiochilaceae by the occurrence of spherical leaf papillae. The historical biogeography of Plagiochilaceae is explored based on the reconstructions of the phylogeny, biogeographic patterns and diversification time estimates. The results indicate that the current distribution of Plagiochilaceae cannot be explained exclusively by Gondwanan vicariance. A more feasible explanation of the range is a combination of short distance dispersal, rare long distance dispersal events, extinction, recolonization and diversification.

Keywords

Jungermanniales Plagiochilaceae Plagiochila Proskauera biogeography divergence time estimates phylogeny Gondwana 

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Copyright information

© Springer-Verlag Wien 2006

Authors and Affiliations

  • J. Heinrichs
    • 1
  • M. Lindner
    • 1
  • H. Groth
    • 1
  • J. Hentschel
    • 1
  • K. Feldberg
    • 1
  • C. Renker
    • 2
  • J. J. Engel
    • 3
  • M. von Konrat
    • 3
  • D. G. Long
    • 4
  • H. Schneider
    • 1
  1. 1.Department of Systematic BotanyAlbrecht von Haller Institute of Plant Sciences, University of GöttingenGöttingenGermany
  2. 2.Department of Soil EcologyUFZ Centre for Environmental Research Leipzig-Halle LtdHalleGermany
  3. 3.Department of BotanyThe Field MuseumChicagoUSA
  4. 4.Royal Botanic Garden EdinburghEdinburghUK

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