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Phytogeography of the subtribe Leipoldtiinae (Mesembryanthemaceae)

机译:莱科(Leipoldtiinae)(Mesembryanthemaceae)的植物地理学

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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.
机译:对Leipoldtiinae部落的9个属的分布和物种频率的调查表明,可以区分两个多样性中心。这些或多或少与北部的“加里普中心”和南部的“ Vanrhynsdorp中心”重合(两者均为sensu Nordenstam 1969)。两个中心似乎都发生了物种形成。该子部落可能在一个干旱的冬季降雨地区发生了变化,该地区可能位于其目前的分布地区之外。分布中心与在菊花科的两个亚科中观察到的一致。

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