Karyological studies on some Antarctic liverworts

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Abstract
Chromosome counts are reported from 5 spp. of Antarctic hepatics belonging to 5 genera and 4 families. The chromosome numbers in the genera Herzogobryum (H. teres n = 9) and Pachyglossa (P. dissitifolia n = 9) are reported for the 1st time. The 1st chromosome count from Lophozia excisa, n = 27, is the highest reported from Lophozia. A diploid number, n = 18, is reported for the first time from Barbilophozia hatcheri; a 2nd count, n = 9, agrees with earlier reports. The commonest Antarctic liverwort Cephaloziella cf. exiliflora has n = 18, and this agrees with earlier reports for the genus.