Bryomyces, a Genus Described from Foliar Moss Gemmae, Is an Earlier Name for Plenogemma (Orthotrichaceae)

Bryomyces Miq. and Phragmidiolum Müll. Hal., originally described as genera of endophytic bryophilous ascomycetes, refer instead to foliar moss gemmae based on a comparative assessment of their published illustrations with bryophyte specimens and relevant bryological literature. Phragmidiolum and Plenogemma Plášek, Sawicki & Ochyra are morphologically congeneric with Bryomyces, the latter of which has priority. The new combination B. phyllanthus (Brid.) J. J. Atwood, W. R. Buck & Goffinet is proposed. Bryomyces elegans Miq., Phragmidiolum apicale Müll. Hal., and Ulota phyllantha Brid. [≡ Plenogemma phyllantha (Brid.) Sawicki, Plášek & Ochyra] are new synonyms of that species. Bryomyces montagneanus Miq. is a new synonym of Calymperes androgynum Mont. [= Syrrhopodon rigidus Hook. & Grev.], whereas B. muelleri Miq., Phragmidiolum ramosum Müll. Hal., and Phragmidiolum sparsum Müll. Hal. are new synonyms of Orthotrichum lyellii Hook. & Taylor [≡ Pulvigera lyellii (Hook. & Taylor) Plášek, Sawicki & Ochyra]. Lectotypes are designated for B. montagneanus, Phragmidiolum, Phragmidiolum apicale, and Phragmidiolum ramosum, while a neotype is designated for B. elegans.