taxonID	type	description	language	source
45E59076317D5F4DAB3BFFD94A4465BE.taxon	description	Fig. 2	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
45E59076317D5F4DAB3BFFD94A4465BE.taxon	etymology	Etymology. The epithet refers to the host genus, Mesua, from which the fungus was isolated.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
45E59076317D5F4DAB3BFFD94A4465BE.taxon	description	Description. Saprobic on decaying twigs of Mesua sp. Sexual morph: Ascomata 520 – 580 μm high, 260 – 290 µm wide (xˉ = 549 × 272 µm, n = 5), immersed, visible as black spots with tiny pores, flat, scattered or aggregated, globose to subglobose, ostiolate. Peridium 14 – 18 µm (xˉ = 15 µm, n = 5), two-layered; outer layer wide, comprising thick-walled, dark brown cells of textura angularis, inner layer thin, composed of hyaline textura angularis cells. Paraphyses 3 – 5 µm wide, hyaline, septate, longer than asci, narrow towards the apex. Asci 86 – 134 × 7 – 13 µm (xˉ = 115 × 9 µm, n = 20), 8 - spored, unitunicate, cylindrical, with short pedicel, apically rounded, with a J +, apical ring. Ascospores 14 – 18 × 5 – 6.8 µm (xˉ = 15 × 6 µm, n = 20), uniseriate, ellipsoidal, hyaline when immature, turning sub-hyaline to pale brown at maturity, 1 - septate, slightly constricted at the septum, guttulate, smooth-walled, lacking a sheath in Indian ink. Asexual morph: Not observed.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
45E59076317D5F4DAB3BFFD94A4465BE.taxon	description	Culture characteristics. Colonies on MEA, reaching 4 cm diam. after 15 days at 27 ° C, from above white to pale yellow radiating outwards, dense, circular to slightly irregular, flattened with smooth surface, with smooth margin; reverse pale brown in the middle, yellowish brown at the margin.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
5A9ED485F9385CFD9E3D2586DC1E0AF2.taxon	description	Fig. 3	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
5A9ED485F9385CFD9E3D2586DC1E0AF2.taxon	description	Description. Saprobic on dead twigs of Senna siamea. Sexual morph: Ascomata 308 – 320 µm high, 348 – 360 µm wide, (xˉ = 312 × 353 µm, n = 5), immersed, visible as black spots in light-coloured areas on the host, solitary, scattered, subglobose to oblate, papillate. Ostiole 100 – 106 µm high, 65 – 70 µm diam (xˉ = 102 × 67 µm, n = 5), centric. Peridium 45 – 58 µm (xˉ = 48 µm, n = 5) two-layered; outer layer thick, dense, made up of red-dish-brown cells of textura angularis; inner layer thin, comprising hyaline cells. Paraphyses 3 – 5 µm wide (xˉ = 4.4 µm, n = 5), hyaline, longer than asci, septate, guttulate, embedded in a gelatinous matrix. Asci 85 – 115 × 6.5 – 7 µm (xˉ = 101 × 6.8 µm, n = 20), 8 - spored, unitunicate, cylindrical, thin-walled, short-pedicellate, apically rounded, with a J +, discoid apical ring. Ascospores 15 – 16 × 5 – 6 µm (xˉ = 15.5 × 5.9 µm, n = 20), uniseriate, oblong or narrowly fusiform, guttulate, hyaline when immature, turning sub-hyaline to olivaceous grey, 1 - septate, slightly constricted at the septum, straight to slightly curved, smooth-walled, lacking a sheath in Indian ink. Asexual morph: Not observed.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
CED7A44E2ADA5329A2E4BE2F6DCA0AD8.taxon	description	Fig. 4	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
CED7A44E2ADA5329A2E4BE2F6DCA0AD8.taxon	etymology	Etymology. The epithet refers to the host genus, Mimusops, from which the fungus was isolated.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
CED7A44E2ADA5329A2E4BE2F6DCA0AD8.taxon	description	Description. Saprobic on the decaying branch of Mimusops elengi. Sexual morph: Ascomata 286 – 370 μm high, 364 – 455 µm wide, (xˉ = 321 × 397 µm, n = 5), immersed, visible as black spots with tiny pores, staining the host surface pale reddish brown around the ostioles, solitary, scattered to aggregated, globose to sub-globose. Ostiole central, prominent, 150 – 166 μm high, 82 – 84 µm wide (xˉ = 154 × 82 µm, n = 5). Peridium 12 – 25 µm (xˉ = 20 µm, n = 5), two-layered; outer layer thick, dense, reddish-brown cells of textura angularis, inner layer thin, cells hyaline, of textura angularis. Paraphyses 3 – 6 µm wide (xˉ = 4.2 µm, n = 5), hyaline, septate, longer than asci and embedded in a gelatinous matrix. Asci 126 – 164 × 8 – 13 µm (xˉ = 145.7 × 10. 2 µm, n = 20), 8 - spored, unitunicate, cylindrical, with short pedicel, apically rounded, with a J +, discoid, apical ring. Ascospores 18 – 22 × 5 – 7 µm (xˉ = 20 × 6 µm, n = 20), uniseriate, cylindrical to oblong, hyaline when immature, turning subhyaline to brown at maturity, 1 - septate, slightly constricted at the septum, guttulate, smooth-walled, lacking a sheath in Indian ink. Asexual morph: Not observed.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
80565701C43E5DF1AFAF02E95634C9B0.taxon	description	Fig. 5	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
80565701C43E5DF1AFAF02E95634C9B0.taxon	etymology	Etymology. The epithet refers to the host genus, Paraserianthes, from which the fungus was isolated.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
80565701C43E5DF1AFAF02E95634C9B0.taxon	description	Description. Saprobic on decaying twigs of Paraserianthes lophantha. Sexual morph: Ascomata 430 – 520 µm wide, 290 – 400 µm high (xˉ = 497 × 355 µm, n = 5), immersed, solitary or grouped, scattered, globose to subglobose, dark brown to black, ostiolate. Ostiole central, comprising a short papilla, with an ostiolar canal lined with hyaline periphyses. Peridium 16 – 20 µm (xˉ = 16 µm, n = 5) two-layered; outer layer wide, dark brown, thick-walled cells of textura angularis, inner layer comprising one layer of pale yellow or sub-hyaline to hyaline cells of textura angularis, thin-walled. Paraphyses 3 – 5 µm wide (xˉ = 4.5 µm, n = 5), hyaline, filiform, septate, guttulate, longer than asci. Asci 85 – 152 × 7.5 – 16 µm (xˉ = 125.5 × 10.5 µm, n = 20), 8 - spored, unitunicate, cylindrical, thin-walled, short-pedicellate, apically rounded, with a J +, conspicuous, discoid, apical ring. Ascospores 16 – 20 × 5 – 9 µm (xˉ = 19 × 6.9 µm, n = 20), uniseriate, oblong to ellipsoid, hyaline when young, turning yellow brown at maturity, 3 - septate, rounded to obtuse ends, smooth-walled, guttulate, without a sheath. Asexual morph: Not observed.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
D78D68D1A9665F2598197D7824AA83D1.taxon	description	Fig. 6	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
D78D68D1A9665F2598197D7824AA83D1.taxon	etymology	Etymology. Refers to the morphological similarity with Amphisphaeria micheliae.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
D78D68D1A9665F2598197D7824AA83D1.taxon	description	Description. Saprobic on decaying twigs. Sexual morph: Ascomata 202 – 273 μm high, 349 – 400 µm diam (xˉ = 246 × 337 µm, n = 5), immersed, visible as tiny pores, flat, solitary to aggregated, scattered, globose to subglobose, brown, ostiolate. Peridium 17 – 23 µm wide (xˉ = 20.6 µm, n = 5), two-layered; outer layer wide, dark brown, comprising thick-walled cells of textura angularis, inner layer comprising hyaline cells of textura angularis, thin-walled. Paraphyses 4 – 4.4 µm (xˉ = 4.2 µm, n = 5) wide, hyaline, longer than asci, filiform, guttulate, septate, embedded in a gelatinous matrix. Asci 84 – 97 × 7 – 9 µm (xˉ = 89.8 × 8.45 µm, n = 20), 8 - spored, unitunicate, cylindrical, with short pedicel, apically rounded and narrowed, with a J + inconspicuous apical ring. Ascospores 11 – 17 × 4 – 6 µm (xˉ = 15 × 5 µm, n = 20), uniseriate, fusiform, hyaline when immature, turning yellow to yellowish brown on maturity, 1 - septate, guttulate, smooth-walled, slightly constricted at septum, straight to slightly curved, surrounded by a thin mucilaginous sheath. Asexual morph: Not observed.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
A235A1BCE8B351B8BC50CF2EE7E4E8A9.taxon	description	Fig. 7	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
A235A1BCE8B351B8BC50CF2EE7E4E8A9.taxon	etymology	Etymology. The epithet refers to the host genus Pterocarpus, from which the fungus was isolated.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
A235A1BCE8B351B8BC50CF2EE7E4E8A9.taxon	description	Description. Saprobic on recently dead branches of Pterocarpus sp. Sexual morph. Ascomata 225 – 237 μm high, 355 – 373 µm wide, (xˉ = 231 × 360 µm, n = 5), immersed, visible as black spots, host tissue becoming reddish around the apical pores, solitary to aggregated, scattered, globose to sub-globose, brown. Ostiole central, 70 – 60 wide, comprising a short papilla. Peridium 12 – 16 µm wide (xˉ = 14 µm, n = 5), two-layered; outer layer wide, dark brown, thick-walled cells of textura angularis, inner layer comprising one layer of hyaline cells of textura angularis, thin-walled. Paraphyses 4 – 6 µm wide (xˉ = 4.8 µm, n = 5), hyaline, septate, guttulate, embedded in a gelatinous matrix. Asci 95 – 116 × 9 – 14 µm (xˉ = 106 × 11 µm, n = 20), 8 - spored, unitunicate, cylindrical, deliquescing, with short pedicel, apically rounded, with a J +, wedge-shaped, apical ring. Ascospores 19 – 21 × 5 – 7 µm (xˉ = 20 × 6 µm, n = 20), ellipsoidal, hyaline when immature, turning yellow to yellowish-brown when mature, 3 - septate, guttulate, smooth-walled, surrounded by a mucilaginous sheath. Asexual morph: Not observed.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
A235A1BCE8B351B8BC50CF2EE7E4E8A9.taxon	description	Culture characteristics. Colonies on MEA reaching 4 cm diam. after 15 days at 27 ° C, from above white, dense, irregular, flattened with smooth surface, with lobate margin; reverse yellow red in the middle, yellow at the margin.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
18EC6EC878635BA8ACB406C7E18BEE93.taxon	description	Fig. 8	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
18EC6EC878635BA8ACB406C7E18BEE93.taxon	etymology	Etymology. The epithet refers to the host genus, Schima, from which the fungus was isolated.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
18EC6EC878635BA8ACB406C7E18BEE93.taxon	description	Description. Saprobic on decaying twigs of Schima wallichii. Sexual morph: Ascomata 480 – 620 μm high × 520 – 683 µm wide, (xˉ = 531 × 583 µm, n = 5), immersed with ostiole breaking through host surface, visible as black spot, solitary to aggregated, scattered, globose to subglobose, brown, ostiolate. Ostiole central, comprising a short papilla, with an ostiolar canal. Peridium 13 – 16 µm wide (xˉ = 14.2 µm, n = 5), two-layered; outer layer thick, dense, reddish-brown cells of textura angularis, inner layer thin, hyaline cells of textura angularis. Paraphyses 3 – 5 µm wide, hyaline, filiform, septate, embedded in a gelatinous matrix. Asci 196 – 275 × 21 – 30 µm (xˉ = 236.2 × 22.9 µm, n = 20), 8 - spored, unitunicate, cylindrical, with short pedicel, apically rounded, with J-, apical ring. Ascospores 36.9 – 40 × 13.5 – 15 µm (xˉ = 38.6 × 14 µm, n = 20), uniseriate, broadly fusiform, hyaline, turning olivaceous brown to brown at maturity, one median and constricted euseptum, with two distosepta, guttulate (especially at immaturity), broad to conically rounded at both ends, smooth, surrounded by a thick mucilaginous sheath. Asexual morph: Not observed.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
18EC6EC878635BA8ACB406C7E18BEE93.taxon	description	Culture characteristics. Colonies on MEA slow-growing, reaching 3 cm in diam. after 15 days at 27 ° C, from above white to pale yellow radiating outwards, dense, circular, irregular, flattened with smooth surface, with lobate margin; reverse yellow brown in the middle, white at the margin.	en	Tun, Zaw Lin, Bundhun, Digvijayini, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Thiyagaraja, Vinodhini, Al-Otibi, Fatimah, Hyde, Kevin D. (2025): The addition of six novel species and a new record of Amphisphaeria from northern Thailand. MycoKeys 125: 1-31, DOI: 10.3897/mycokeys.125.163523
