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Citation for Study 2147

About Citation title: "Acacia s.s. and its relationship among tropical legumes, tribe Ingeae (Leguminosae: Mimosoideae)".
About This study was previously identified under the legacy study ID S2151 (Status: Published).


Brown G., Murphy D., Miller J., & Ladiges P. 2008. Acacia s.s. and its relationship among tropical legumes, tribe Ingeae (Leguminosae: Mimosoideae). Systematic Botany, 33(4).


  • Brown G.
  • Murphy D.
  • Miller J.
  • Ladiges P.


To search for the sister taxon of Acacia s.s. (tribe Acacieae) and to further knowledge of the phylogeny of the related tribe Ingeae, we have sequenced two regions of nuclear ribosomal DNA (ITS and ETS). Sixty species from the tribe Ingeae (26 genera), together with representatives from each of five lineages of tribe Acacieae, have been sampled. Ingeae and Acacia s.s. form a well supported clade, with a monophyletic Acacia s.s. nested within a paraphyletic Ingeae. Based on limited sampling, the closest relative of Acacia s.s. is most likely one of the Australian species of the genus Paraserianthes: Paras. lophantha subsp. lophantha or Paras. toona. Related to Acacia s.s. and Paraserianthes is a group of Ingeae taxa from Australia and South East Asia: Archidendron p.p., Archidendropsis, Pararchidendron and Wallaceodendron. This study is a preliminary step in resolving the inter-generic relationships of the tribe Ingeae. Genetic relationships within the Ingeae appear to conform to morphological groups previously identified as genera and informal alliances; some notable exceptions are discussed.

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