Kathistes, a new genus of pleomorphic ascomycetes

摘要

The genusKathistesis described to accomodate two new species,K. calyculataandK. analemmoides, and an existing one based onPyxidiophora fimbriataBarrasa amp; Moreno. All three species are coprophilous and produce transversely septate ascospores in long-necked perithecia. Ascospore germination occurs by the production of budding yeast cells. Sporelike bodies, termed sporidiolae, are produced in spherical structures resembling the perithecia called sporidiomata. Similar genera and species are discussed and contrasted by a dichotomous key.Kathistesspecies do not appear to be closely related to other ascomycetes and are assigned to a new familyKathistaceae.