Muriphaeosphaeria
Muriphaeosphaeria Phukhams., Bulgakov & K.D. Hyde, in Phukhamsakda et al., Phytotaxa 227(1): 60 (2016).
Index Fungorum number: IF 551291; Facesoffungi number: FoF 00868, 4 morphological species (Species Fungorum 2022), 4 species with molecular data.
Saprobic on dead and dying stems. Sexual morph: Ascomata coriaceous, superficial, solitary, scattered, globose to cupulate, black to dark brown, smooth-walled, ostiolate. Ostiole central, lacking periphyses. Peridium multi-layered, dark to light brown, comprising cells of textura angularis, with inner hyaline layer. Hamathecium comprising long, filamentous, narrow, septate pseudoparaphyses surrounding asci. Asci 8-spored, bitunicate, fissitunicate, cylindrical to clavate, short-pedicellate, apically rounded with an ocular chamber clearly visible when immature. Ascospores biseriate, partially overlapping, obovoid to sub-fusiform, narrow towards ends, slightly curved, transversely septate, with a longitudinal septum in the central cells, slightly constricted at the central septum, light brown to yellowish, granulate, smooth-walled. Asexual morph: Coelomycetous. Conidiomata superficial, dark brown to black, globose, uniloculate, solitary, scattered, ostiolate. Pycnidial wall thick-walled, multi-layered, with inner layer comprising several cell-layers, comprising brown-walled cells of textura angularis. Conidiophores reduced to conidiogenous cells. Conidiogenous cells holoblastic with percurrent annelidic proliferations, integrated, oblong, hyaline, brown when mature, smooth walled, and formed from the inner layer of pycnidial wall. Conidia oblong to cylindrical, narrowly rounded at both ends, transversely septate, pale brown when mature (adapted from Phukhamsakda et al. 2015).
Type species: Muriphaeosphaeria galatellae Phukhams., Bulgakov & K.D. Hyde
Notes: Muriphaeosphaeria resembles Dematiopleospora in having superficial ascomata and muriform ascospores, but differs by having thick-walled ascomata, without loose hyphae surrounding the ostiole, filamentous, cellular pseudo paraphyses, short and simple pedicellate asci and ascospores with rounded ends. Molecular markers available for Muriphaeosphaeria are ITS, LSU, SSU and TEF-1.
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