Taeniolella exilis, the type of the genus, is commonly found on decaying wood and bark of Betula (Hughes 1958, Ellis 1971). During a revision of the type material of T. exilis by Jones et al. (2002), a penicillately branched conidiophore was observed as an extension of the terminal macroconidia. A similar penicillate conidiophore was observed in two other species, T. longissima and T. rudis (Hughes 1980, Jones et al. 2002). The latter taxon was shown to be closely related to Sterigmatobotrys macrocarpa of the Pleurotheciales, whose asexual state is characterised by similar penicillate conidiophores with several series of branches and metulae terminating macronematous conidiophores (Réblová & Seifert 2011). However, brown, septate Taeniolella macroconidia were not observed in axenic cultures obtained from conidia or ascospores of S. macrocarpa.