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A cladistic analysis of calandrinia portulacaceae

A cladistic analysis of calandrinia portulacaceae

Pakistan Journal of Botany 21(1): 158-169

The cladistic relationship among 34 species of the genus Calandrinia H.B. et. K. (Portulacaceae), endemic to Australia were analysed for 22 binary attributes, by using "PHYSYS" computer program. The criteria used to assign evolutionry polarity of attribute state are discussed in detail. In all the Phenograms four main groups come out fairly clearly. The major difference in the trees produced by PHYSYS are the changes in the position of a few taxa, within the major group. The present paper provides data on variation and correlations in seed and pollen characters, and also synthesized detailed morphological relationships. The species having questionable position in some groups are discussed in the light of their unique characters.

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Accession: 006934370

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