Alloarthopyrenia
Alloarthopyrenia Phukhams., Lücking & K.D. Hyde, in Hyde et al., Fungal Diversity 80: 131 (2016)
Index Fungorum number: IF 552236; Faceoffungi number: FoF 02379, 1 morphological species (Species Fungorum 2020), 1 species with molecular data
Saprobic on tree branches in terrestrial, temperate forest habitats. Thallus and photobiont absent. Ascomata solitary, erumpent, carbonaceous, apically ostiollate, periphysate. Involucrellum distinct, dark brown. Excipulum prosoplectenchymatous, brownish above, colorless below. Hamathecium comprising 0.5–1 µm wide paraphysoids, hyaline, straight, branched and anastomosing, embedded in a gelatinous matrix. Asci 8-spored, bitunicate, fissitunicate, clavate, short pedicellate, with a non-amyloid ocular chamber. Ascospores irregularly arranged to biseriate, fusiform ellipsoid to oblong, hyaline, 1-septate, euseptate, with secondary constrictions in each cell, rough-walled, constricted at the septum, with a gelatinous halo. Asexual morph: Undetermined.
Type species: Alloarthopyrenia italica Phukhams., Camporesi, Ariyawansa & K.D. Hyde
Notes: Alloarthopyrenia was introduced by Phukhamsakda et al. (2016) with A. italica as the type species. Alloarthopyrenia is unique in having a yellow thallus, clavate to cylindrical uni-seriate asci, and 3-septate ascospores.
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