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

Zusammenfassung

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.