Open AccessPhytogeography of the subtribe Leipoldtiinae (Mesembryanthemaceae)
Author(s) -
H. E. K. Hartmann
Publication year - 1987
Publication title -
bothalia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.457
H-Index - 20
eISSN - 2311-9284
pISSN - 0006-8241
DOI - 10.4102/abc.v17i2.1037
Subject(s) - phytogeography , sensu , geography , biology , arid , distribution (mathematics) , ecology , taxon , genus , mathematical analysis , mathematics
An investigation of distribution and species frequency of the nine genera of the subtribe Leipoldtiinae shows that two centres of diversity can be distinguished. These coincide more or less with the 'Gariep centre’ in the north and the ’Vanrhynsdorp centre' in the south (both sensu Nordenstam 1969). Speciation seems to have occurred in both centres. The subtribe may have evolved in an arid winter rainfall area which could have been situated outside its present distribution area. The centres of distribution coincide with those observed in both subfamilies of the Mesembryanthemaceae.