PJB-1989-19
A cladistics analysis of calandrinia (portulacaceae)
Syeda saleha
tahir and peter S. ashton
Abstract
The cladistics relationship among 34
species of the genus calandrinia H.B. et K. (portulacaceae), endemic to austrailia were analysed for 22 binary attributes , by using “OHYSIS” computer program. The criteria used to assign evolutionary
polarity of attribute state is discussed
indetail. In all the phenograms four main groups come out fairly clearly. The major diference in the trees produced by
PHYSIS are the changes in the position of a few taxa, within the major group. The present paper provides data on variation and correlation in seed and pollen characters , and also syntheized detailed morphological relationships. The species having questionable position in some groups are discussed in the light of their unique characters.
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