identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
56404F2B4AA158DEB06ED2FFE93F9F6E.text	56404F2B4AA158DEB06ED2FFE93F9F6E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Anastomitrabeculia chiangraiensis Gomdola, Z. L. Tun & Yong Wang bis 2026	<div><p>Anastomitrabeculia chiangraiensis Gomdola, Z. L. Tun &amp; Yong Wang bis sp. nov.</p><p>Fig. 2</p><p>Holotype.</p><p>MFLU 26-0002.</p><p>Etymology.</p><p>Referring to Chiang Rai Province, where the species was collected.</p><p>Diagnosis.</p><p>Ascospores without longitudinal striations.</p><p>Description.</p><p>Saprobic on stems of an unidentified host. Sexual morph: Ascomata 350–450 μm diam. (x ̄ = 405 μm, n = 5), 375–500 μm high (x ̄ = 445 μm, n = 5), semi-immersed or immersed, solitary, aggregated or scattered, globose to subglobose, black, ostiolate. Ostiole 50–75 μm diam. (x ̄ = 61.9 μm, n = 5), 45–80 μm high (x ̄ = 72 μm, n = 5), central. Peridium 5.5–10 μm thick (x ̄ = 7.4 μm, n = 5), composed of 4–6 layers of pale brown to brown textura angularis cells, with hyaline inner layers. Hamathecium consisting of dense, filiform, filamentous, trabeculate pseudoparaphyses. Pseudoparaphyses 0.5–2 μm wide (x ̄ = 1.6 μm, n = 30), branched or unbranched, septate, hyaline. Asci (89 –) 128–197 × 15–21 μm (x ̄ = 173 × 18.6 μm, n = 20), bitunicate, fissitunicate, 8 - spored, cylindrical to clavate, straight or slightly curved, broadly rounded at the apex with an ocular chamber and mostly with a short pedicel [8–15 (– 19) μm long (x ̄ = 11.1 μm, n = 20)]. Ascospores 25–30 × 7–8.5 µm (x ̄ = 28.1 × 7.8 µm; n = 20), overlapping uni- to biseriate, hyaline, broadly fusiform or subcylindrical, broader at the center and tapering towards the ends, mostly straight, smooth-walled, 1 - median-septate, constricted at the septum, containing two large guttules in each cell and surrounded by a mucilaginous sheath of nearly equal thickness [0.7–1.8 μm long (x ̄ = 1.2 μm, n = 20)]. Asexual morph: Not observed.</p><p>Material examined.</p><p>Thailand. • Chiang Rai Province: Mae Fah Luang University premises, on dead stems of an unidentified host, 15 June 2024, Zaw Lin Tun, P 21 (MFLU 26-0002, holotype). Same details, P 21 - B (MFLU 26-0003) .</p><p>GenBank numbers.</p><p>MFLU 26-0002: ITS = PX 940740, 28 S = PX 956940, rpb 2 = PZ 097584; MFLU 26-0003: ITS = PX 940741, 28 S = PX 956941.</p><p>Notes.</p><p>Our strains (MFLU 26-0002 and MFLU 26-0003) conform to the morphological species concept of Anastomitrabeculia, which is characterised by bitunicate, fissitunicate and cylindrical to clavate asci with an ocular chamber, and hyaline, 1 - septate, broadly fusiform ascospores that taper towards the ends and are surrounded by a mucilaginous sheath (Bhunjun et al. 2021).</p><p>Our strains clustered together with maximum support (100 % ML, 1.00 PP) and formed a sister lineage to the clade comprising isolates of A. didymospora (MFLUCC 16-0412; ex-type, MFLUCC 16-0417, MFLUCC 11-0197 and MFLUCC 11-0200), with 89 % ML bootstrap support (Fig. 1). Excluding gaps, significant interspecies genetic distances were observed: 19.1 % in ITS (92 / 482 bp) between our strains and A. didymospora (MFLUCC 11-0197 and MFLUCC 11-0200), 4.6 % in 28 S (38 / 827 bp) between our strains and the ex-type of A. didymospora (MFLUCC 16-0412) and 15.4 % in rpb 2 between our strain (MFLU 26-0002) and A. didymospora (MFLUCC 11-0200). Morphologically, the most distinguishable feature separating our strains from A. didymospora is the presence of longitudinal striations in the ascospores, a character not observed in our strains (Bhunjun et al. 2021; Phookamsak et al. 2022).</p><p>Morphological data and multigene phylogenetic analyses support the establishment MFLU 26-0002 and MFLU 26-0003 as a new species, Anastomitrabeculia chiangraiensis, saprobic on stems of an unidentified host in Thailand. This represents the third species in the genus.</p></div>	https://treatment.plazi.org/id/56404F2B4AA158DEB06ED2FFE93F9F6E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Xiao, Yu;Tun, Zaw Lin;Wang, Yong;Gomdola, Deecksha;Yu, Long-Feng	Xiao, Yu, Tun, Zaw Lin, Wang, Yong, Gomdola, Deecksha, Yu, Long-Feng (2026): Two new species of Pleosporales from northern Thailand: Anastomitrabeculia chiangraiensis sp. nov. (Anastomitrabeculiaceae) and Roussoella chiangraiensis sp. nov. (Roussoellaceae). MycoKeys 138: 193-208, DOI: 10.3897/mycokeys.138.189855
2939B987E3BB571D8DD6E72F31689029.text	2939B987E3BB571D8DD6E72F31689029.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Roussoella chiangraiensis Gomdola, Z. L. Tun & Yong Wang bis 2026	<div><p>Roussoella chiangraiensis Gomdola, Z. L. Tun &amp; Yong Wang bis sp. nov.</p><p>Fig. 3</p><p>Holotype.</p><p>MFLU 26-0004.</p><p>Etymology.</p><p>Referring to Chiang Rai Province, where the species was collected.</p><p>Description.</p><p>Saprobic on bamboo stems. Sexual morph: Ascomata 50–200 μm diam., superficial on the host substrate, aggregated, globose to subglobose, black. Asci 45–75 × 2.5–4 μm (x ̄ = 60.1 × 3.6 μm, n = 20), bitunicate, fissitunicate, 6–8 - spored, cylindrical to clavate, straight or slightly curved, rounded at the apex with an ocular chamber. Ascospores 6–10 × 2–3.5 µm (x ̄ = 7.9 × 2.9 µm, n = 30), uniseriate, broadly fusiform to sub-ellipsoidal, tapering towards one or both ends, mostly straight, smooth- and thick-walled, hyaline when immature, becoming pale brown to brown at maturity, 1 - median-septate, constricted at the septum, usually containing a large guttule in each cell, with longitudinal striations. Asexual morph: Not observed.</p><p>Material examined.</p><p>Thailand. • Chiang Rai Province: Mae Fah Luang University premises, on dead stems of bamboo, 20 November 2025, Zaw Lin Tun, TP 1 (MFLU 26-0004, holotype) .</p><p>GenBank numbers.</p><p>ITS = PX 940742, 28 S = PX 956942, 18 S = PX 956882, rpb 2 = PZ 097585.</p><p>Notes.</p><p>Our strain (MFLU 26-0004) exhibits the diagnostic characters of Roussoella, including bitunicate asci, and brown, fusiform to ellipsoidal, septate ascospores (Liu et al. 2014). In the multilocus phylogeny, it forms a sister clade to R. aseptata (CGMCC 3.25604; ex-type and UESTCC 24.0151), with maximum support (100 % ML, 1.00 PP) (Fig. 1). No nucleotide differences were detected in the 18 S region between our strain and R. aseptata (CGMCC 3.25604; 622 bp and UESTCC 24.0151; 772 bp). However, excluding gaps, interspecies divergences of 3.9 % in ITS (18 / 462 bp) and 0.24 % in 28 S (2 / 845 bp) were recovered.</p><p>Morphological comparison with R. aseptata was not possible, as the latter is known only from its asexual morph, whereas our strain was obtained in the sexual morph (Yu et al. 2024). Based primarily on phylogenetic analyses and the ITS divergence, we describe MFLU 26-0004 as a new species, Roussoella chiangraiensis, saprobic on bamboo stems in Thailand.</p><p>It is noteworthy that our strain lacks the raised, semi-immersed to immersed ascostromata typical of many Roussoella species (Liu et al. 2014). Instead, it produces superficial, carbonaceous ascomata that could not be hand-sectioned and appear among other free fungal spores on the substrate.</p></div>	https://treatment.plazi.org/id/2939B987E3BB571D8DD6E72F31689029	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Xiao, Yu;Tun, Zaw Lin;Wang, Yong;Gomdola, Deecksha;Yu, Long-Feng	Xiao, Yu, Tun, Zaw Lin, Wang, Yong, Gomdola, Deecksha, Yu, Long-Feng (2026): Two new species of Pleosporales from northern Thailand: Anastomitrabeculia chiangraiensis sp. nov. (Anastomitrabeculiaceae) and Roussoella chiangraiensis sp. nov. (Roussoellaceae). MycoKeys 138: 193-208, DOI: 10.3897/mycokeys.138.189855
