Kathistes, a new genus of pleomorphic ascomycetes

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Abstract
The genus Kathistes is described to accomodate two new species, K. calyculata and K. analemmoides, and an existing one based on Pyxidiophora fimbriata Barrasa & 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. Kathistes species do not appear to be closely related to other ascomycetes and are assigned to a new family Kathistaceae.

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