Muroia I. Hino & Katum., J. Jap. Bot. 33: 79 (1958).
Index Fungorum number: IF 3292; Facesoffungi number: FoF 12313, 1 morphological species (Species Fungorum 2022), no molecular data available.
Parasitic on the 1ower part of the half-dead culm of Sasa kurilensis. Sexual morph: Perithecia solitary, gregarious, subepidermal, later erumpent, subglobose, more often cuboid, constricted at the upper portion, flattened at the apex, subcoriaceous, glabrous, fuliginous. Peridium pseudoparenchymatous, comprising cells of textura angularis or globulosa, and somewhat elongate at the basal portion. Ostioles linear dehiscent. Asci 8-spored, cluster at the bottom of the perithecium, clavate or cylindric-clavate, rounded at the apex, stipitate. Paraphyses filiform, simple. Ascospores arranged in two rows, oblong or elongate-oblong, continuous, rounded at both ends frequently curved, smooth hyaline, later subhyaline, yellowish, granular at first, latter 1-guttate surrounded by a mucous sheath. Asexual morph: Unknown (adapted from Hino and Katumoto 1958).
Type species: Muroia nipponica I. Hino & Katum.
Notes: Muroia is characterised by solitary, gregarious, subepidermal perithecia, pseudoparenchymatous peridium, clavate or cylindric-clavate asci and oblong or elongate-oblong, continuous ascospores surrounded by a mucous sheath. Hino and Katumoto (1958) placed Muroia in Lophiostomataceae based on its perithecial structure and linear ostiole. Lumbsch and Huhndorf (2010) and Kirk et al. (2013) agreed and accepted Muroia in Lophiostomataceae. Hyde et al. (2013) and Wijayawardene et al. (2017, 2020) referred it to Dothideomycetes genera incertae sedis. Molecular data is lacking. Fresh collections with DNA sequence data are needed to confirm the systematic position of Muroia.
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