Notes on coprophilous bitunicate ascomycetes

Comparison of variations in morphological features occurring in coprophilou s bitunicate Ascomycetes leads to recognition of their relative importance. The presence or absence of germ pores or germ slits in ascospore, of varia tions in ascus apical anatomy, and of presence or absence of periphyses in the ostiole, in combination permit separation into three families: Phaeotri chaceae, Sporormiaceae, and the newly described Delitschiaceae.