Gomphocalyx and Phylohydrax (Rubiaceae): sister taxa excluded from Spermacoceae s.s., featuring a remarkable case of convergent evolution

@inproceedings{Dessein2005GomphocalyxAP,
  title={Gomphocalyx and Phylohydrax (Rubiaceae): sister taxa excluded from Spermacoceae s.s., featuring a remarkable case of convergent evolution},
  author={Steven Dessein and Lennart Andersson and Koen Geuten and Erik Smets and Elmar Robbrecht},
  year={2005}
}
The present paper deals mainly with two genera of the family Rubiaceae, Gomphocalyx Baker and Phylohydrax Puff. These taxa have been placed in Spermacoceae as traditionally delimited (e.g., Schumann, 1891; Robbrecht, 1988). Although Bremer (1996) and Bremer & Manen (2000) argue that the tribe Spermacoceae should be emended to include most of the tribes Hedyotideae, Triainolepideae, Knoxieae and Manettieae, the Spermacoceae as traditionally conceived are still monophyletic (Andersson & Rova… CONTINUE READING

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