Pleosporales » Lophiostomataceae

Neotrematosphaeria

Neotrematosphaeria Jayasiri, E.B.G. Jones & K.D. Hyde

Index Fungorum number: IF 551242

 

Saprobic on submerged, dead twigs. Sexual morph: Ascomata solitary, semi-immersed to erumpent, uniloculate, subglobose, glabrous, black, coriaceous to carbonaceous, with ostiolate papilla, with a crest-like apex and a pore-like opening. Peridium broad at sides, poorly developed at the base, composed of a single stratum, with several layers of dark brown to black cells of textura prismatica. Pseudoparaphyses numerous, cellular, filiform, indistinctly septate, embedded in a gelatinous matrix. Asci 8-spored, bitunicate, fissitunicate, cylindric-clavate, with a long pedicel, rounded at the apex, with an ocular chamber. Ascospores biseriate to uniseriate near the base, fusiform, mostly curved, pale yellowish to olivaceous brown, but pale at the terminal cells, septate, with bipolar appendages (Tanaka et al. 2005; Thambugala et al. 2015). Asexual morph: Coelomycetes, pleurophomopsis-like. Conidiomata erumpent to superficial, uniloculate, globose, with thick, brown, sparse hyphae at sides, with ostiolate papila. Peridium composed of polygonal to globose cells. Conidiophores cylindrical, branched, 0–1-septate. Conidiogenous cells phialidic. Conidia extremely small-sized, subglobose to ellipsoid, straight, hyaline, aseptate, smooth (Tanaka et al. 2005). (Descriptions from Dong et al. 2020).

 

Type species: Neotrematosphaeria biappendiculata (Kaz. Tanaka, Y. Harada & M.E. Barr) Thambug., Kaz. Tanaka & K.D. Hyde

 

Notes: The monotypic genus Neotrematosphaeria was introduced to accommodate Trematosphaeria biappendiculata Kaz. Tanaka et al. which was isolated from submerged wood in freshwater in Northern Japan (Tanaka et al. 2005; Thambugala et al. 2015). The pale yellowish to olivaceous brown, 5(–7)-septate ascospores with globose to conical terminal appendages can distinguish Neotrematosphaeria from other genera in Lophiostomataceae. (Notes from Dong et al. 2020).

 

References

Dong W, Wang B, Hyde KD, McKenzie EHC, Raja HA, Tanaka K, Abdel-Wahab MA, Abdel-Aziz FA, Doilom M, Phookamsak R, Hongsanan S, Wanasinghe DN, Yu X-D, Wang G-N, Yang H, Yang J, Thambugala KM, Tian Q, Luo Z-L, Yang J-B, Miller AN, Fournier J, Boonmee S, Hu D-M, Nalumpang S, Zhang H (2020) Freshwater Dothideomycetes. Fungal Divers 105:319–575

Tanaka K, Harada Y, Barr ME (2005) Trematosphaeria: taxonomic concepts, new species from Japan and key to species. Fungal Divers 19:145–156

Thambugala KM, Hyde KD, Tanaka K, Tian Q, Wanasinghe DN, Ariyawansa HA, Jayasiri SC, Boonmee S, Camporesi E, Hashimoto A, Hirayama K, Schumacher RK, Promputtha I, Liu ZY (2015) Towards a natural classification and backbone tree for Lophiostomataceae, Floricolaceae, and Amorosiaceae fam. nov. Fungal Divers 74:199–266

 

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