Article

Plant Systematics and Evolution

, Volume 269, Issue 3, pp 223-243

Phylogenetic relationships in Blumea (Asteraceae: Inuleae) as evidenced by molecular and morphological data

  • P. PornpongrungruengAffiliated withDepartment of Biological Sciences, University of Aarhus
  • , F. BorchseniusAffiliated withDepartment of Biological Sciences, University of Aarhus
  • , M. EnglundAffiliated withDepartment of Botany, Stockholm UniversityDepartment of Phanerogamic Botany, Swedish Museum of Natural History
  • , A. A. AnderbergAffiliated withDepartment of Phanerogamic Botany, Swedish Museum of Natural History
  • , M. H. G. GustafssonAffiliated withDepartment of Biological Sciences, University of Aarhus Email author 

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Abstract

The present study, based on sequences of cpDNA (trnL-F & psbA-trnH) and nrDNA (ITS) and morphology, examined the evolutionary relationships in Blumea and its position among related genera. The results confirmed that the closest relatives of Blumea are Caesulia, Duhaldea and Pentanema p.p., and showed that the monotypic genera Blumeopsis and Merrittia are nested within Blumea. In Blumea s.l., two major, well-supported clades were recognised and a single species, the widespread Blumea balsamifera, that could not be placed with certainty relative to the two main clades. The two main clades differ in habit, ecology and distribution. The Blumea densiflora clade contains shrubs and subshrubs of evergreen forests, distributed from continental Asia to New Guinea and Polynesia, whereas the Blumea lacera clade is a widespread paleotropical group that comprises mostly annual, weedy herbs of open forests and fields.

Keywords

Blumea Inuleae Asteraceae Phylogeny trnL-F psbA-trnH ITS morphology