A phylogenetic analysis based on internal transcribed spacer regions of the nuclear ribosomal RNA region (ITS) sequences has been
undertaken for species in the genus Schizopora. Four known species were studied, viz. S. radula, S. paradoxa, S. flavipora, S. nothofagi,
and a hitherto undescribed species from Taiwan. Allopatric differentiation was apparent in S. radula, for which several geographically
representive samples were available. Among these, ITS sequence data obtained from S. radula isolates from British Columbia and
Australasia were identical. All previously recognised Schizopora species were well separated from each other with respect to their ITS
sequences. Mating compatibility tests also showed complete reproductive separation between species, but intercompatibility between
cultures from the same species, irrespective of geographical origin. Overall, the morphology of basidiomes of S. radula from New
Zealand differs only in minor respects from those of European and Argentinean origin, but shows a higher degree of variability than
described for European specimens.