taxonID	type	description	language	source
FC7C980800728577FF36C6301502FF67.taxon	description	(FIG 3) Index Fungorum number: IF 850096, Facesoffungi number: FoF 16954 Saprobic on dead stems of unidentified host. Sexual morph: Ascomata 290 – 320 µm high × 248 – 267 µm diam (x ̄ = 310 × 260 μm, n = 20), immersed, solitary, scattered, globose, coriaceous, yellowish brown to brown, ostiolate. Ostiole central, cylindrical, papillate, protruding from substrate. Peridium 28 – 48 µm wide, comprising 2 – 3 layers of thinwalled, yellowish brown to light brown cells of textura angularis. Hamathecium comprises 2 – 3 µm wide, cylindrical to filiform, septate, branching pseudoparaphyses. Asci 95 – 173 × 19 – 32 µm (x ̄ = 132 × 25 μm, n = 20), 8 - spored, bitunicate, cylindric-clavate, slightly curved, with a short pedicel. Ascospores 32 – 44 µm long × 7 – 16 µm wide (x ̄ = 38 × 11 μm, n = 20), broadly fusiform to ellipsoid, widest at the center, yellow to white when immature and reddish-brown when mature, hyaline at appendage at both ends, straight to slightly curved, 1 - septate, with 2 large guttules at the center when immature, smooth-walled. Asexual morph: Undetermined.	en	Tun, Zaw Lin, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Alotibi, Fatimah, Hyde, Kevin D. (2024): Morpho-molecular characterization of two Pleosporales species, Montagnula thevetiae and Thyridaria thailandica sp. nov. in northern Thailand. Phytotaxa 676 (2): 139-154, DOI: 10.11646/phytotaxa.676.2.3, URL: https://doi.org/10.11646/phytotaxa.676.2.3
FC7C980800728577FF36C6301502FF67.taxon	materials_examined	Material examined: — Thailand, Chiang Mai Province, in the forests around the Mushroom Research Center (19 ° 07.200 ’ N, 98 ° 44.044 ’ E), unidentified dead branch, 14 November 2022, ZL Tun, MRC 85, (MFLU 24 - 0002). Distribution: — Thailand. GenBank accession numbers: — ITS = PQ 512825, LSU = PQ 529133 and tef- 1 α = PQ 594789. Notes: — Based on the phylogenetic analysis, our strain (MFLU 24 - 0002) clustered with the strains of M. thevetiae (HKAS 126964, HKAS 126963) (Fig 1). and it is morphologically similar to M. thevetiae (Wanasinghe et al. 2024). The ITS and LSU and tef - 1 α regions are identical. Our strain (MFLU 24 - 0002) lacks rpb 2 and SSU sequences for the base pair comparisons. Our new collection has overlapping characteristics compared to M. thevetiae isolates, including immersed, globose, subglobose and ellipsoidal ascospores that are straight to curved, brown, and 1 - septate. Thus, we identify our isolate is M. thevetiae. We introduce our new isolate as a geographical record. Thyridariaceae Q. Tian & K. D. Hyde	en	Tun, Zaw Lin, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Alotibi, Fatimah, Hyde, Kevin D. (2024): Morpho-molecular characterization of two Pleosporales species, Montagnula thevetiae and Thyridaria thailandica sp. nov. in northern Thailand. Phytotaxa 676 (2): 139-154, DOI: 10.11646/phytotaxa.676.2.3, URL: https://doi.org/10.11646/phytotaxa.676.2.3
FC7C9808007C8577FF36C38917EAFA83.taxon	description	(FIG 4) Index Fungorum number: IF 902650, Facesoffungi number: FoF 16953	en	Tun, Zaw Lin, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Alotibi, Fatimah, Hyde, Kevin D. (2024): Morpho-molecular characterization of two Pleosporales species, Montagnula thevetiae and Thyridaria thailandica sp. nov. in northern Thailand. Phytotaxa 676 (2): 139-154, DOI: 10.11646/phytotaxa.676.2.3, URL: https://doi.org/10.11646/phytotaxa.676.2.3
FC7C9808007C8577FF36C38917EAFA83.taxon	etymology	Etymology: — The name reflects the country where the specimen was collected, Thailand.	en	Tun, Zaw Lin, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Alotibi, Fatimah, Hyde, Kevin D. (2024): Morpho-molecular characterization of two Pleosporales species, Montagnula thevetiae and Thyridaria thailandica sp. nov. in northern Thailand. Phytotaxa 676 (2): 139-154, DOI: 10.11646/phytotaxa.676.2.3, URL: https://doi.org/10.11646/phytotaxa.676.2.3
FC7C9808007C8577FF36C38917EAFA83.taxon	materials_examined	Holotype: — MFLU 24 - 0001 Saprobic on unidentified decaying wood. Sexual morph: Ascomata 420 – 470 µm high × 350 – 368 µm wide (x ̄ = 417 × 361 μm, n = 5), immersed, erumpent, aggregated, clustered, globose to subglobose, uniloculate, dark brown to black, ostiolate, yellow to reddish or orange-brown pruinose layer and masses spores surrounding the apices of the ostiolar necks. Ostiole papillate, protruding from the center of the ascomata, thick, yellowish around apical pore. Peridium 45 – 60 µm wide (x ̄ = 51 μm, n = 5), comprising several layers of dark brown cells of textura angularis. Hamathecium comprises 1 – 2.3 µm wide, cylindrical, filamentous, rarely branched, septate, anastomosed, hyaline, branched trabeculate pseudoparaphyses. Asci 50 – 100 × 9 – 13 µm (x ̄ = 75 × 12 μm, n = 20), 8 - spored, bitunicate, cylindric-clavate to clavate, slightly curved, short pedicellate, apically rounded. Ascospores 17 – 20 × 7 – 10 µm (x ̄ = 20 × 8.4 μm, n = 20), overlapping uni-to bi-seriate, ellipsoid to obovoid, slightly curved, golden brown to chestnut brown, 3 - septate, severely constricted and darker at the septa, guttulate, smooth-walled. Asexual morph: Undetermined. Material examined: — Thailand, Chiang Mai Province, in the forests around the Mushroom Research Center (19 ° 07.200 ’ N, 98 ° 44.044 ’ E), on fallen unidentified decaying branches, 14 November 2022, ZL Tun, MRC 87, (MFLU 24 - 0001, holotype). GenBank accession numbers: — ITS = PQ 529134, LSU = PQ 529136, rpb 2 = PQ 594790 and SSU = PQ 529135. Notes: — Based on the multi-gene phylogenetic analysis, our new strain Thyridaria thailandica (MFLU 24 - 0001) clustered with T. aureobrunnea (MFLUCC 21 - 0090) with 100 % ML and 1.00 PP bootstrap support with forming the basal clade of the genus (Fig 2). Thyridaria thailandica can be distinguished from T. aureobrunnea by having larger ascomata (420 – 470 × 350 – 368 µm vs. 248 – 294.5 × 262 – 286.5 µm), wider asci (48 – 98 × 9 – 13 µm vs. 45 – 61.5 × 7 – 8.5 µm), and ascospores (17 – 20 × 7 – 10 µm vs. 10.5 – 13 × 3.5 – 4.5 µm) (Boonmee et al. 2021). A comparison of the interspecies genetic distances between T. thailandica and T. aureobrunnea resulted in the following differences: 2.19 % in ITS (546 base pairs) and 0.80 % in LSU sequences (871 bp). Thyridaria aureobrunnea lacks rpb 2, and SSU sequences to compare the base pairs. Therefore, based on the variations in morphology, genetic distances, and the phylogenetic species recognition criteria proposed by Chethana et al. (2021), and Pem et al. 2021), we establish T. thailandica (MFLU 24 - 0001) as a new species. It is important to note that the pseudoparaphyses are trabeculate sensu (Liew et al. 2000).	en	Tun, Zaw Lin, Bhunjun, Chitrabhanu S., Maharachchikumbura, Sajeewa S. N., Alotibi, Fatimah, Hyde, Kevin D. (2024): Morpho-molecular characterization of two Pleosporales species, Montagnula thevetiae and Thyridaria thailandica sp. nov. in northern Thailand. Phytotaxa 676 (2): 139-154, DOI: 10.11646/phytotaxa.676.2.3, URL: https://doi.org/10.11646/phytotaxa.676.2.3
