Phylogeny and radiation of pollination systems in DISA (Orchidaceae).

  title={Phylogeny and radiation of pollination systems in DISA (Orchidaceae).},
  author={Steven D. Johnson and Henrik Linder and Kurt Steiner},
  journal={American journal of botany},
  volume={85 3},
We studied the patterns of adaptive radiation in Disa, a large orchid genus in southern Africa. A cladogram for 27 species was constructed using 44 morphological characters. Pollination systems were then mapped onto the phylogeny in order to analyze pathways of floral evolution. Shifts from one pollination system to another have been a major feature of the evolutionary diversification of Disa. Unlike many plant genera that are pollinated mainly by a single group of insects, radiation in Disa… CONTINUE READING
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