Distoseptisporaceae K.D. Hyde & McKenzie, Fungal Divers. 80(1): 402 (2016)
MycoBank number: MB 551850; Index Fungorum number: IF 551850; Facesoffungi number: FoF 01754; 26 species.
Saprobic on wood and in terrestrial and freshwater habitats. Sexual morph: Ascomata perithecial, dark brown to black, superficial, solitary, globose to ovoid, papillate. Ostiole periphysate. Peridium leathery, carbonaceous, dark brown, composing two layers of textura prismatica. Paraphyses numerous, hyaline, unbranched, septate, cylindrical. Asci 8-spored, unitunicate, cylindrical, with a J-, apical ring. Ascospores biseriate, hyaline to light yellowish- brown, fusiform, straight, 3-septate, lacking a mucilaginous sheath or appendages. Asexual morph: Hyphomycetous. Colonies effuse, hairy or velvety, olivaceous or black. Mycelium mostly immersed, composed of branched, septate, smooth, pale brown hyphae. Conidiophores semi- macronematous to macronematous, mononematous, septate, unbranched, single or in groups, erect, straight or flexuous, smooth, olivaceous to brown, cylindrical, robust at the base, sometimes elongating percurrently. Conidiogenous cells monoblastic, integrated, determinate, terminal, cylindrical. Conidia acrogenous, solitary, olivaceous, brown or yellowish-brown to reddish-brown, euseptate or distoseptate or muriform appearing cruciately divided by septa at right angles to one another, obclavate or cylindrical, with rounded apex, indeterminately elongating percurrently, truncate at base; basal cell with cross wall and basal scar; or transversal ellipsoid to subglobose, sometimes with pores in the septa (adapted from Su et al. 2016b).
Type genus – Distoseptispora K.D. Hyde, McKenzie & Maharachch.
Notes – Distoseptisporaceae was introduced in Su et al. (2016b) to accommodate a single genus Distoseptispora. Asexual morphs in Distoseptisporaceae share similar morphology with species classified in Ellisembia and Sporidesmium in having holoblastic, euseptate or distoseptate conidia and monoblastic, determinate or percurrently elongating conidiogenous cells (Subramanian 1992, Shenoy et al. 2006, Yang et al. 2018b). However, many of the characters used to delimit the genera do not appear phylogenetically significant (Shenoy et al. 2006, Su et al. 2016b).
Genera