Distoseptispora
Distoseptispora K.D. Hyde, McKenzie & Maharachch., in H.Y. Su et al., Fungal Diversity: 10.1007/s13225-016-0362-0, [29] (2016)
Diaporthomycetidae, Distoseptisporales, Distoseptisporaceae, Distoseptispora
Index Fungorum number: IF551833; Facesoffungi number: FoF 01755; 26 morphological species (Species Fungorum 2021); 26 species with sequence data
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. 2016).
Type species: Distoseptispora fluminicola McKenzie, Hong Y. Su, Z.L. Luo & K.D. Hyde, in H.Y. Su et al., Fungal Diversity: 10.1007/s13225-016-0362-0, [29] (2016)
Notes: The generic concept of Distoseptispora was emended by Yang et al. (2018) in respect to the characters of D. guttulata and D. suoluoensis, which have erect, macronematous conidiophores, percurrently elongating conidiogenous cells and euseptate conidia. The type of septum does not aid in identification of Distoseptispora species. Acrodictys martini was initially transferred to Diaporthe martinii (Xia et al. 2017). It differs from all other species in the genus in having muriform, transversally ellipsoid to subglobose brown conidia. Its placement in Distoseptispora was recently resolved with molecular DNA data. Distoseptispora clematidis was introduced by Phukhamsakda et al. (2020) from Clematis and Luo et al. (2019) introduced D. appendiculata, D. lignicola, D. neorostrata and D. obclavata from submerged wood in Thailand.
Species illustrated in this entry
Distoseptispora rayongensis J. Yang & K.D. Hyde
References:
Hyde KD, Norphanphoun C, Maharachchikumbura SSN, Bhat DJ et al. 2020 – Refined families of Sordariomycetes. Mycosphere 11, 305–1059.
Luo ZL, Hyde KD, Liu JK, Maharachchikumbura SSN et al. 2019 – Freshwater Sordariomycetes. Fungal Diversity 99, 451–660.
Phukhamsakda C, Hyde KD, McKenzie EH, Bhat DJ et al. 2020 – Study of fungi associated with Clematis L. (Ranunculaceae) and integrated approach to delimiting species boundaries. Fungal diversity (in press).
Su HY, Hyde KD, Maharachchikumbura SSN, Ariyawansa HA et al. 2016 – The families Distoseptisporaceae fam. nov., Kirschsteiniotheliaceae, Sporormiaceae and Torulaceae, with new species from freshwater in Yunnan Province, China. Fungal Diversity 80, 375–409.
Xia JW, Ma YR, Li Z, Zhang XG. 2017 – Acrodictys-like wood decay fungi from southern China, with two new families Acrodictyaceae and Junewangiaceae. Scientific Reports 7, 7888.
Yang J, Maharachchikumbura SSN, Liu JK, Hyde KD et al. 2018 – Pseudostanjehughesia aquitropica gen. et sp. nov. and Sporidesmium sensu lato species from freshwater habitats. Mycological Progress 17, 591–616.
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