Pseudoaurantiascoma
Pseudoaurantiascoma Thambug. & K.D. Hyde, in Thambugala et al., Fungal Diversity: 10.1007/s13225-015-0348-3, [52] (2015).
Index Fungorum number: IF 551273; Facesoffungi number: FoF 00837, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.
Saprobic on dead branches. Sexual morph: Ascomata solitary or aggregated into large clusters or in small groups, erumpent to superficial, pyriform to globose, dark brown, ostiolar area often lightly colored. Ostiole central, rounded, usually raised, papillate, with a pore-like opening. Hamathecium comprising 1–2μm wide, numerous, branched, septate, cellular, pseudoparaphyses, embedded in a gelatinous matrix. Asci 8-spored, bitunicate, fissitunicate, cylindrical-clavate, pedicellate, rounded at the apex, with an ocular chamber. Ascospores bi-seriate, partially overlapping, hyaline, fusiform, usually 1–3-septate, but commonlyuniseptate, occasionally one of the central cells broader than others, constricted at the central septum, smooth-walled, surrounded by a small mucilaginous sheath that extends at the apex of ascospores. Asexual morph: Unknown (Mugambi & Huhndorf 2009).
Type species: Pseudoaurantiascoma kenyense (Mugambi & Huhndorf) Thambugala & K.D. Hyde
Notes: Pseudoaurantiascoma is characterised by solitary or aggregated pyriform to globose, dark brown ascomata, cylindrical-clavate, pedicellate asci and fusiform, usually 1–3-septate ascospores. Pseudoaurantiascoma kenyense was previously known as Misturatosphaeria kenyensis and accommodated in Misturatosphaeria. In the phylogenetic analyses of Thambugala et al. (2015), M. kenyensis formed a separate subclade and hence was accommodated in the new genus Pseudoaurantiascoma. P. kenyense can be distinguished from the type species of Misturatosphaeria in having 1–3-septate ascospores, enclosed in a mucilaginous sheath, that spreads at the ends of ascospores. Pseudoaurantiascoma is a distinct and clearly defined genus in Teichosporaceae. Molecular markers available for Pseudoaurantiascoma are LSU and TEF-1.
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