Abstract
A number of attributes that has proved useful to delimit subfamilial taxa within the Portulacaceae are
critically assessed and some little used ones are introduced. The attributes are polarised by an outgroup
comparison and a Wagner tree constructed. Some reversals which occur on this tree are considered
unacceptable and branches are moved to eliminate this factor, although a longer tree, in terms of
character state changes, is produced. A phylogenetic sequence is proposed on this basis and a new
classification of the family attempted. On the basis of these results it is suggested that: (1) the genus
Calandrinia s.1. be divided into five genera; (2) the genera Talinaria and Anacampseros are closely
related; (3) Talinum may not be a natural genus; (4) the family can be conveniently divided into five
tribes.
A biogeographical analysis indicates that closer floristic relationships exist between western America
and Australia and between eastern America and Africa than between eastern and western America or
between Australia and Africa.
Subject
Plant Science,Ecology, Evolution, Behavior and Systematics
Cited by
59 articles.
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