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Chromosome Numbers of North African Phanerogams. V. Some Counts in Launaea (Compositae, Lactuceae)

Kilian, Norbert ; Oberprieler, Christoph ; Vogt, Robert


Abstract

Chromosome numbers are reported for nine taxa of Launaea from Morocco and Tunisia. For L. angustifolia subsp. angustifolia a chromosome number (2n = 16) is provided for the first time and in L. nudicaulis a hitherto unkown tetraploid cytotype (2n = 36) is reported. The combinations L. angustifolia subsp. arabica and L. mucronata subsp. cassiana are formed as names new to science.


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