taxonID	type	description	language	source
DEEE0D6136BA5F17BF96FFFEFC7BB1A9.taxon	description	Fig. 6	en	Su, Wen-Xin, Tieliwadi, Ranagul, Su, Wen-Ying, Li, Xiao, Xu, Rong (2025): Additions to woody litter fungi of Byssosphaeria, Phaeoseptum and Pseudothyridariella (Pleosporales, Ascomycota) from China. MycoKeys 122: 35-57, DOI: 10.3897/mycokeys.122.161224
DEEE0D6136BA5F17BF96FFFEFC7BB1A9.taxon	description	Description. Saprobic on decaying wood of Fagaceae. Sexual morph: Ascomata 586 – 690 × 425 – 630 μm (x ̄ = 638 × 527 µm, n = 5), scattered, solitary, mostly superficial, unilocular, globose to subglobose, covered with dense dark brown setae (2 – 6 μm wide), dark brown to black, coriaceous, ostiolate. Ostiole central, wide, with a pore-like opening visible on the host, orange to yellow. Peridium 54 – 69 μm wide, multilayered, heavily pigmented, comprising 13 – 16 layers, hyaline to dark brown cells of textura angularis to textura prismatica. Hamathecium comprising 1.5 – 3.3 μm wide, dense, septate, filiform, branching pseudoparaphyses, embedded in a gelatinous matrix. Asci 115 – 146 × 9 – 12 μm (x ̄ = 127 × 10 μm, n = 20), 8 - spored, bitunicate, fissitunicate, cylindrical to clavate, apically rounded, with a well-developed ocular chamber, long pedicellate (46 – 53 μm long). Ascospores 31.6 – 37.6 × 6 – 7.6 μm (x ̄ = 34 × 7 μm, n = 20), biseriate, overlapping, oblong fusiform, hyaline to pale brown, tapering towards both ends, smooth-walled, slightly curved, 1 - septate, constricted at the septa, without mucilaginous sheath. Asexual morph: Undetermined.	en	Su, Wen-Xin, Tieliwadi, Ranagul, Su, Wen-Ying, Li, Xiao, Xu, Rong (2025): Additions to woody litter fungi of Byssosphaeria, Phaeoseptum and Pseudothyridariella (Pleosporales, Ascomycota) from China. MycoKeys 122: 35-57, DOI: 10.3897/mycokeys.122.161224
DEEE0D6136BA5F17BF96FFFEFC7BB1A9.taxon	description	Culture characteristics. Single ascospores germinate on MEA within 24 h. Colonies on MEA, fast growing, full plate within one week at 25 ° C, medium dense, convex, velvety with white aerial mycelium, entire, reverse dark orange, pale yellow at margin. Orange pigmentation diffused into the media.	en	Su, Wen-Xin, Tieliwadi, Ranagul, Su, Wen-Ying, Li, Xiao, Xu, Rong (2025): Additions to woody litter fungi of Byssosphaeria, Phaeoseptum and Pseudothyridariella (Pleosporales, Ascomycota) from China. MycoKeys 122: 35-57, DOI: 10.3897/mycokeys.122.161224
620C5D2BBEFE52B2AB13A80596AEE091.taxon	description	Fig. 5	en	Su, Wen-Xin, Tieliwadi, Ranagul, Su, Wen-Ying, Li, Xiao, Xu, Rong (2025): Additions to woody litter fungi of Byssosphaeria, Phaeoseptum and Pseudothyridariella (Pleosporales, Ascomycota) from China. MycoKeys 122: 35-57, DOI: 10.3897/mycokeys.122.161224
620C5D2BBEFE52B2AB13A80596AEE091.taxon	etymology	Etymology. Refers to the type locality, Biyang County.	en	Su, Wen-Xin, Tieliwadi, Ranagul, Su, Wen-Ying, Li, Xiao, Xu, Rong (2025): Additions to woody litter fungi of Byssosphaeria, Phaeoseptum and Pseudothyridariella (Pleosporales, Ascomycota) from China. MycoKeys 122: 35-57, DOI: 10.3897/mycokeys.122.161224
620C5D2BBEFE52B2AB13A80596AEE091.taxon	description	Description. Saprobic on dead branches of Fagaceae. Sexual morph: Ascomata 415 – 445 × 467 – 606 μm (x ̄ = 432 × 525 µm, n = 5), solitary to gregarious, depressed, immersed, globose to subglobose, irregular, convex, without ostiole. Peridium 18 – 25 μm (x ̄ = 23.5 μm, n = 10) wide, multi-layered, comprising 5 – 9 layers of cells of textura angularis, thick-walled, dark brown to brown cells of outer layers, and hyaline cells of inner layers. Hamathecium comprising 1 – 2.2 μm (x ̄ = 1.4 µm, n = 20) wide, dense, numerous, branched, cellular pseudoparaphyses, extending above the asci, embedded in a gelatinous matrix. Asci 152 – 170 × 25 – 32 μm (x ̄ = 164 × 27 μm, n = 20), 8 - spored, bitunicate, fissitunicate, cylindrical to clavate, apically rounded, with an ocular chamber, long pedicellate. Ascospores 34 – 47 × 9 – 12 μm (x ̄ = 39 × 11 μm, n = 30), overlapping, 1 – 2 - seriate, oblong to broadly fusiform, slightly curved, initially hyaline, becoming pale to yellowish brown, smooth-walled, muriform, with 9 – 18 - transverselly septa, 0 – 4 longitudinal septa in each row, slightly constricted at septum, cell above median septum slightly enlarged, tapering towards both ends, broadly rounded or truncate at apex and base, guttulate, without sheath or appendages. Asexual morph: undetermined.	en	Su, Wen-Xin, Tieliwadi, Ranagul, Su, Wen-Ying, Li, Xiao, Xu, Rong (2025): Additions to woody litter fungi of Byssosphaeria, Phaeoseptum and Pseudothyridariella (Pleosporales, Ascomycota) from China. MycoKeys 122: 35-57, DOI: 10.3897/mycokeys.122.161224
620C5D2BBEFE52B2AB13A80596AEE091.taxon	description	Culture characteristics. Single ascospores germinate on PDA within 24 h. Colonies growing on PDA at 25 ° C, dark, reaching 37 mm diam after four weeks. Cultures from above, circular, dense, gray, curled, floccose, umbonate, dentate, and iron gray at the margins; reverse was dark gray, with white, sparse hyphae radiating outward.	en	Su, Wen-Xin, Tieliwadi, Ranagul, Su, Wen-Ying, Li, Xiao, Xu, Rong (2025): Additions to woody litter fungi of Byssosphaeria, Phaeoseptum and Pseudothyridariella (Pleosporales, Ascomycota) from China. MycoKeys 122: 35-57, DOI: 10.3897/mycokeys.122.161224
97577987EBBF59B78081BBD578B017EC.taxon	description	Fig. 4	en	Su, Wen-Xin, Tieliwadi, Ranagul, Su, Wen-Ying, Li, Xiao, Xu, Rong (2025): Additions to woody litter fungi of Byssosphaeria, Phaeoseptum and Pseudothyridariella (Pleosporales, Ascomycota) from China. MycoKeys 122: 35-57, DOI: 10.3897/mycokeys.122.161224
97577987EBBF59B78081BBD578B017EC.taxon	etymology	Etymology. Refers to the host family, Fagaceae.	en	Su, Wen-Xin, Tieliwadi, Ranagul, Su, Wen-Ying, Li, Xiao, Xu, Rong (2025): Additions to woody litter fungi of Byssosphaeria, Phaeoseptum and Pseudothyridariella (Pleosporales, Ascomycota) from China. MycoKeys 122: 35-57, DOI: 10.3897/mycokeys.122.161224
97577987EBBF59B78081BBD578B017EC.taxon	description	Description. Saprobic on dead stems of Fagaceae. Sexual morph: Ascomata 110 – 254 × 145 – 320 µm (x ̄ = 171 × 213 µm, n = 5), solitary or scattered, immersed, bulge on the branches, visible as black spots, coriaceous, globose to subglobose, brown, ostiolate. Peridium 27.8 – 32.3 µm wide, thick, multi-layered, composed of 4 – 6 layers of brown to pale brown cells of textura angularis. Hamathecium comprising 1.9 – 3.27 µm wide, dense, filiform, branched, transversely septate, hyaline, cellular pseudoparaphyses, embedded in a gelatinous matrix. Asci 88 – 138 × 24 – 36 µm (x ̄ = 113 × 30 µm, n = 15), 8 - spored, cylindric, bitunicate, fissitunicate, straight or slightly curved, with a short pedicellate. Ascospores 47 – 66 × 13 – 23 µm (x ̄ = 58 × 19 µm, n = 30), hyaline, 1 – 2 - seriate, partially overlapping, straight or slightly curved, ellipsoid to broadly fusiform, smooth-walled, tapering towards both ends, 8 - septate, constricted at the central septum, the septum breaks from the middle and the contents overflow when mature, with a hyaline gelatinous sheath. Asexual morph: Undetermined.	en	Su, Wen-Xin, Tieliwadi, Ranagul, Su, Wen-Ying, Li, Xiao, Xu, Rong (2025): Additions to woody litter fungi of Byssosphaeria, Phaeoseptum and Pseudothyridariella (Pleosporales, Ascomycota) from China. MycoKeys 122: 35-57, DOI: 10.3897/mycokeys.122.161224
97577987EBBF59B78081BBD578B017EC.taxon	description	Culture characteristics. Ascospores germinate on PDA within 24 h at 25 ° C in the dark. Colonies on PDA, reaching 46 – 52 mm after 2 weeks at 25 ° C. Culture from above, circular, asperulate, dense, mycelium slightly raised, tangerine in the center, pale orange radiating outward, margin was undulate to petaloid, zonate, with concentric rings; reverse dark orange, pale yellow at margin. Yellow pigmentation diffused into the media.	en	Su, Wen-Xin, Tieliwadi, Ranagul, Su, Wen-Ying, Li, Xiao, Xu, Rong (2025): Additions to woody litter fungi of Byssosphaeria, Phaeoseptum and Pseudothyridariella (Pleosporales, Ascomycota) from China. MycoKeys 122: 35-57, DOI: 10.3897/mycokeys.122.161224
