Plant Systematics and Evolution

, Volume 171, Issue 1–4, pp 199–204 | Cite as

Chromosome numbers and their systematic implications in Australian marine angiosperms: ThePosidoniaceae

  • John Kuo
  • Sidney H. James
  • Hugh Kirkman
  • C. den Hartog


Somatic chromosome numbers of 2n = 20 are reported for all eight species of AustralianPosidonia: P. angustifolia, P. australis, P. coriacea, P. denhartogii, P. kirkmanii, P. ostenfeldii, P. robertsonae, andP. sinuosa. All species apparently have five larger and five smaller pairs of chromosomes. There is no evidence that speciation inPosidonia, which is relatively prolific in comparison to other seagrasses, is accompanied by change of chromosome number.

Key words

Marine angiosperms Posidoniaceae Posidonia Chromosome numbers speciation 


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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • John Kuo
    • 1
  • Sidney H. James
    • 2
  • Hugh Kirkman
    • 3
  • C. den Hartog
    • 4
  1. 1.Electron Microscopy CentreUniversity of Western AustraliaNedlandsAustralia
  2. 2.Department of BotanyUniversity of Western AustraliaNedlandsAustralia
  3. 3.CSIRO Marine LaboratoriesNorth BeachAustralia
  4. 4.Laboratory of Aquatic EcologyCatholic UniversityToernooiveld, NijmegenThe Netherlands

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