Dyfrolomyces
Dyfrolomyces K.D. Hyde, K.L. Pang, Alias, Suetrong & E.B.G. Jones, in Pang et al., Cryptog. Mycol. 34(3): 227 (2013).
Index Fungorum number: IF 804660; Facesoffungi number: FoF 07672, 10 morphological species (Species Fungorum 2021), 6 species with molecular data.
Saprobic on wood in aquatic or terrestrial environments. Sexual morph: Ascomata relatively large, solitary to gregarious, immersed, globose or subglobose, coriaceous, clypeate, ostiole rounded, papillate. Peridium broadest at the sides, comprising two layers, an outer layer of cells of textura intricata composed of host cells interspersed with fungal hyphae and an inner layer of thick-walled cells of textura angularis. Hamathecium comprising numerous, relatively narrow (up to 2 µm, wide), septate pseudoparaphyses embedded in a gelatinous matrix. Asci 8-spored, bitunicate, fissitunicate, cylindrical, with a relatively short pedicel and apically rounded or flattened with a distinct ocular chamber and ring-like subapical apparatus. Ascospores overlapping uniseriate, broadly fusiform, symmetrical, hyaline, transseptate with wide septa (distoseptate), smooth-walled, with/without a sheath (Adapted from Pang et al. 2013).
Type species: Dyfrolomyces tiomanensis K.L. Pang, Alias, K.D. Hyde, Suetrong & E.B.G. Jones
Notes: Dyfrolomyces was introduced by Hyde et al. (2013) with D. tiomanensis as type species. Dyfrolomyces is characterized by rather large, immersed, globose or subglobose, clypeate, ostiolate, papillate ascomata, bitunicate, fissitunicate, cylindrical asci and broadly fusiform, symmetrical, hyaline, septate ascospores, with or without a mucilaginous sheath. Dyfrolomyces is a distinct and well-supported lineage in Pleurotremataceae. We examined the holotype material of D. tiomanensis but the latter was in poor condition. We illustrate the genus with the specimen of D. distoseptatus. (AMH 9984, holotype).
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