A lichen with skin-brown to blackish-brown fruiting bodies with a distinct excipulum and characteristic two-celled ascospores, which are broadly ellipsoid and their cells are unequally sized. It occurs on dead wood, more rarely also on bark. C. erysiboides prefers wood close to the ground, indicating a preference for sites with persistent snow cover during winter. It is a lichen of montane and boreal forests, widely distributed in Europe but rarely reported. In the Czech Republic, it was found only on Mt Malý Javorník in the Beskydy Protected Landscape Area, where it grew on the hardwood of a beech log.taxonomic classification:
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