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Citation for Study 22771

Citation title: "Biogeography and relationships within the Melanthera alliance: A pan-tropical lineage (Compositae: Heliantheae: Ecliptinae)".

Study name: "Biogeography and relationships within the Melanthera alliance: A pan-tropical lineage (Compositae: Heliantheae: Ecliptinae)".

This study is part of submission 22771 (Status: Published).

Citation

Edwards R.D., Cantley J.T., Chau M.M., Keeley S.C., & Funk V. 2018. Biogeography and relationships within the Melanthera alliance: A pan-tropical lineage (Compositae: Heliantheae: Ecliptinae). Taxon, .

Authors

• Edwards R.D. (submitter)
• Cantley J.T.
• Chau M.M.
• Keeley S.C.
• Funk V.

Abstract

The taxonomic history of the Melanthera alliance is long and convoluted with many generic name changes and requires a robust phylogeny to clarify taxonomic concepts within the group and to begin asking questions of its evolutionary history. For a time, prevailing classifications placed all species in the genus Melanthera except for a handful of tetraploids from the Hawaiian Islands being recognized as a distinct genus: Lipochaeta. Recent morphological revision has reopened debate by proposing six genera: Apowollastonia, Echinocephalum, Lipotriche, and Melanthera, and two Pacific Island genera representing diploids (Wollastonia) and tetraploids (Lipochaeta), plus four closely related genera expected to fall outside the alliance (Acunniana, Indocypraea, Lipoblepharis, Quadribractea). Here, we present the most comprehensive molecular phylogeny to date of the taxa variously associated with Melanthera in order to test these competing generic limits and explore the biogeographic history of this pan-tropical lineage. The data are consistent with six segregate genera, including the sinking of Hawaiian Islands members of Wollastonia (Melanthera) back into a broader concept of Lipochaeta, although there is currently no recognized morphological synapomorphy to distinguish Lipochaeta s.l. from Wollastonia. Our results suggest that the Melanthera alliance originated some time during the Pliocene or Pleistocene and a strong contemporary presence of the alliance and closely related Ecliptinae outgroups in the Americas suggests that this region may have been the center of origin with subsequent dispersal. We illustrate the difficulty of reconstructing the dispersal history of the remaining genera and present the most parsimonious colonization hypotheses.

Keywords

Apowollastonia; Asteraceae; Compositae; Echinocephalum; Ecliptinae; Hawaiian Islands; Lipochaeta; Lipotriche; Pacific biogeography; Wedelia; Wollastonia

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S22771
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref28481,
  	 author = {Robert David Edwards and Jason T Cantley and Marian M. Chau and Sterling C. Keeley and V. A.  Funk},
  	 title = {Biogeography and relationships within the Melanthera alliance: A pan-tropical lineage (Compositae: Heliantheae: Ecliptinae)},
  	 year = {2018},
  	 keywords = {Apowollastonia; Asteraceae; Compositae; Echinocephalum; Ecliptinae; Hawaiian Islands; Lipochaeta; Lipotriche; Pacific biogeography; Wedelia; Wollastonia},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Taxon},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {The taxonomic history of the Melanthera alliance is long and convoluted with many generic name changes and requires a robust phylogeny to clarify taxonomic concepts within the group and to begin asking questions of its evolutionary
  history. For a time, prevailing classifications placed all species in the genus Melanthera except for a handful of tetraploids from the Hawaiian Islands being recognized as a distinct genus: Lipochaeta. Recent morphological revision has reopened debate by proposing six genera: Apowollastonia, Echinocephalum, Lipotriche, and Melanthera, and two Pacific Island genera representing diploids (Wollastonia) and tetraploids (Lipochaeta), plus four closely related genera expected to fall outside the alliance (Acunniana, Indocypraea, Lipoblepharis, Quadribractea). Here, we present the most comprehensive molecular
  phylogeny to date of the taxa variously associated with Melanthera in order to test these competing generic limits and explore the biogeographic history of this pan-tropical lineage. The data are consistent with six segregate genera, including the sinking of Hawaiian Islands members of Wollastonia (Melanthera) back into a broader concept of Lipochaeta, although there is
  currently no recognized morphological synapomorphy to distinguish Lipochaeta s.l. from Wollastonia. Our results suggest that the Melanthera alliance originated some time during the Pliocene or Pleistocene and a strong contemporary presence of the alliance and closely related Ecliptinae outgroups in the Americas suggests that this region may have been the center of origin with subsequent dispersal. We illustrate the difficulty of reconstructing the dispersal history of the remaining genera and present the most parsimonious colonization hypotheses.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 28481
  AU  - Edwards,Robert David
  AU  - Cantley,Jason T
  AU  - Chau,Marian M.
  AU  - Keeley,Sterling C.
  AU  - Funk,V. A. 
  T1  - Biogeography and relationships within the Melanthera alliance: A pan-tropical lineage (Compositae: Heliantheae: Ecliptinae)
  PY  - 2018
  KW  - Apowollastonia; Asteraceae; Compositae; Echinocephalum; Ecliptinae; Hawaiian Islands; Lipochaeta; Lipotriche; Pacific biogeography; Wedelia; Wollastonia
  UR  - http://dx.doi.org/
  N2  - The taxonomic history of the Melanthera alliance is long and convoluted with many generic name changes and requires a robust phylogeny to clarify taxonomic concepts within the group and to begin asking questions of its evolutionary
  history. For a time, prevailing classifications placed all species in the genus Melanthera except for a handful of tetraploids from the Hawaiian Islands being recognized as a distinct genus: Lipochaeta. Recent morphological revision has reopened debate by proposing six genera: Apowollastonia, Echinocephalum, Lipotriche, and Melanthera, and two Pacific Island genera representing diploids (Wollastonia) and tetraploids (Lipochaeta), plus four closely related genera expected to fall outside the alliance (Acunniana, Indocypraea, Lipoblepharis, Quadribractea). Here, we present the most comprehensive molecular
  phylogeny to date of the taxa variously associated with Melanthera in order to test these competing generic limits and explore the biogeographic history of this pan-tropical lineage. The data are consistent with six segregate genera, including the sinking of Hawaiian Islands members of Wollastonia (Melanthera) back into a broader concept of Lipochaeta, although there is
  currently no recognized morphological synapomorphy to distinguish Lipochaeta s.l. from Wollastonia. Our results suggest that the Melanthera alliance originated some time during the Pliocene or Pleistocene and a strong contemporary presence of the alliance and closely related Ecliptinae outgroups in the Americas suggests that this region may have been the center of origin with subsequent dispersal. We illustrate the difficulty of reconstructing the dispersal history of the remaining genera and present the most parsimonious colonization hypotheses.
  L3  - 
  JF  - Taxon
  VL  - 
  IS  - 
  ER  -