identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
63F12CA9E5EB5714949FA72EE53AFF0C.text	63F12CA9E5EB5714949FA72EE53AFF0C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Multiseptisporium aquaticum H. W. Shen & Z. L. Luo 2026	<div><p>Multiseptisporium aquaticum H. W. Shen &amp; Z. L. Luo sp. nov.</p><p>Fig. 2 Chinese name: 水生多隔孢 (Pinyin: ShuĬ shēng duō gé bāo)</p><p>Etymology.</p><p>The specific epithet “ aquaticum ” refers to the aquatic habitat where the fungus was collected.</p><p>Holotype.</p><p>HKAS 151655.</p><p>Description.</p><p>Saprobic on submerged decaying wood in freshwater habitats. Sexual morph: Undetermined. Asexual morph: Colonies on natural substrate, superficial, effuse, scattered, hairy, dark brown, solitary, or in small groups of 2–3. Mycelium partly immersed and partly superficial, composed of branched, septate, brown to dark brown, smooth-walled hyphae. Conidiophores (104 –) 120–204 (– 234) × 6–8 µm (x – = 162 × 7 µm, SD = 41.6 × 0.6, n = 15), macronematous, mononematous, cylindrical, straight or slightly flexuous, unbranched, 8–9 - septate, slightly enlarged at the base, dark brown to black, smooth-walled. Conidiogenous cells (11 –) 14–21 (– 23) × 4–6 µm (x – = 18 × 5 µm, SD = 3.0 × 0.5, n = 15), monoblastic, integrated, terminal, determinate, cylindrical, slightly narrow at the top, brown, smooth-walled. Conidial secession rhexolytic. Conidia (53 –) 57–68 (– 75) × 10–14 µm (x – = 63 × 12 µm, SD = 5.7 × 1.2, n = 15), acrogenous, solitary, straight to slightly curved, 8–10 - euseptate, obclavate to rostrate, truncated at base, tapering towards an acuminate apex, brown to dark olivaceous brown, subhyaline at apex, typically widest at third cell from base, with cuneiform basal cell, similar in color to apical cells, slightly constricted at septa, guttulate, smooth, occasionally verruculous, sometimes with an inconspicuous sheath at apex.</p><p>Culture characteristics.</p><p>Conidia germinating on PDA within 12 h and germ tubes produced from both ends. Colonies on PDA reaching 2–3 cm in diameter after two months at room temperature (around 22 ° C) in the dark, dense, velvety, gray to dark brown at the margins, pale to gray at the center, with irregular margins and bulge center from above; dense, gray to dark gray, with irregular margins from below.</p><p>Material examined.</p><p>China • Yunnan Province, Honghe Hani and Yi Autonomous Prefecture, Shiping County, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=101.72967&amp;materialsCitation.latitude=23.682333" title="Search Plazi for locations around (long 101.72967/lat 23.682333)">Yilonghu Lake</a>, 23°40'56.4"N, 101°43'46.8"E, elevation 1400 m, on the unknown submerged decaying wood, 23 February 2023, H. W. Shen, L 2194 (HKAS 151655, holotype), ex-type KUNCC 23-14304 ; • ibid. Guizhou Province, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=105.93055&amp;materialsCitation.latitude=28.154722" title="Search Plazi for locations around (long 105.93055/lat 28.154722)">Zunyi City</a>, Xishui County, 28°9'17"N, 105°55'50"E, elevation 640 m, on the unknown submerged decaying wood, 2 October 2023, X. J. Xiao, NJS 15 (HKAS 152855, paratype), ex-paratype GZCC 24-0036 .</p><p>Notes.</p><p>Phylogenetic analysis revealed that Multiseptisporium aquaticum (KUNCC 23-14304 and GZCC 24-0036) clustered with Platytrachelon abietis (CBS 125235) with stable support (Fig. 1). Platytrachelon abietis, originally described as Ceratosphaeria abietis, was collected from the inner side of decaying bark of Abies alba in the Czech Republic and has also been reported from Ukraine (Réblová 2013). Based on morphological and phylogenetic evidence, Réblová (2013) transferred C. abietis to the newly established genus Platytrachelon . Both sexual and asexual morphs of P. abietis have been documented. Notably, the asexual morph, including a synanamorph, was observed on PCA culture media. The asexual form of P. abietis is characterized by spherical, hyaline to subhyaline, holoblastic conidiogenous cells that proliferate sympodially; ellipsoidal, septate, smooth-walled conidia, sometimes arising directly from subhyaline or pigmented hyphae. The synanamorph is characterized by cylindrical to ampulliform, one-celled, hyaline to subhyaline conidiogenous cells terminating in a single phialidic opening or with an additional lateral opening; the collarette is shallow, wedge-shaped, and inconspicuous; conidia are cylindrical, strongly curved, hyaline, one-celled, and smooth-walled (Réblová 2013). Multiseptisporium aquaticum differs from P. abietis in having sporidesmium-like conidia produced from monoblastic, terminal, cylindrical conidiogenous cells, with rhexolytic conidial secession. No synanamorphs were observed. Comparison of nucleotide base differences in LSU and rpb 2 sequence data between M. aquaticum (KUNCC 23-14304) and P. abietis (CBS 125235) showed differences of 3.2 % (34 / 1,071 bp, including four gaps) and 11.8 % (122 / 1,032 bp), respectively. Based on the combined morphological characteristics and sequence data, M. aquaticum is proposed as a new species.</p></div>	https://treatment.plazi.org/id/63F12CA9E5EB5714949FA72EE53AFF0C	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	Shen, Hong-Wei;Bao, Dan-Feng;Xiao, Xing-Juan;Bhat, Jayarama Darbhe;Lu, Yong-Zhong;Luo, Zong-Long	Shen, Hong-Wei, Bao, Dan-Feng, Xiao, Xing-Juan, Bhat, Jayarama Darbhe, Lu, Yong-Zhong, Luo, Zong-Long (2026): Morpho-phylogenetic evidence uncovers new taxa of lignicolous freshwater Sordariomycetes from Yunnan and Guizhou provinces, China. MycoKeys 128: 97-124, DOI: 10.3897/mycokeys.128.180553
F65D5EFF9BB852BABE143E8C69F1B831.text	F65D5EFF9BB852BABE143E8C69F1B831.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Multiseptisporium H. W. Shen & Z. L. Luo 2026	<div><p>Multiseptisporium H. W. Shen &amp; Z. L. Luo gen. nov.</p><p>Etymology.</p><p>From Latin multi- (many), septum (a partition or septum), and sporium (spore), referring to the multi-septate conidia of the genus.</p><p>Type species.</p><p>Multiseptisporium aquaticum H. W. Shen &amp; Z. L. Luo, sp. nov.</p><p>Description.</p><p>Saprobic on submerged decaying wood. Sexual morph: Undetermined. Asexual morph: Colonies on natural substrate, effuse, scattered, superficial, hairy, dark brown. Mycelium partly immersed and partly superficial. Conidiophores macronematous, mononematous, cylindrical, septate, unbranched. Conidiogenous cells monoblastic, integrated, terminal, cylindrical, sometimes percurrently proliferating. Conidial secession rhexolytic. Conidia acrogenous, solitary, obclavate to rostrate, truncated at the base, brown to dark brown, euseptate, guttulate, smooth, occasionally verruculous, with a light-colored, truncated, cuneiform basal cell and a subhyaline, acuminate apical cell, with or without sheath and appendages.</p><p>Notes.</p><p>Multi-gene phylogenetic analyses revealed that the two collections of Multiseptisporium formed a distinct monophyletic clade that clustered with three monotypic genera, Aquimonospora, Paradiplococcium, and Platytrachelon, within Diaporthomycetidae genera incertae sedis and Sordariomycetes genera incertae sedis (Hyde et al. 2024; Fig. 1, Suppl. material 1: fig. S 1). Multiseptisporium from these genera by producing a sporidesmium-like asexual morph, whereas its sexual morph remains undetermined. In contrast, Aquimonospora produces clavate, obovoid, or fusiform, septate conidia arising from integrated, terminal, monoblastic, enteroblastic conidiogenous cells (Yang et al. 2019). Paradiplococcium is characterized by subcylindrical to obovoid conidia in short chains and derived from polytretic, integrated or discrete, terminal or intercalary conidiogenous cells (Hernández-Restrepo et al. 2011). In culture, Paradiplococcium also produces a synanamorph with hyaline, falcate to filiform conidia developed from polyblastic, sympodial, denticulate conidiogenous cells (Hernández-Restrepo et al. 2011). Platytrachelon is known to produce both sexual and asexual morphs. Its asexual morph has been observed on PCA medium, where ellipsoidal, septate conidia are produced either directly from hyphae or from blastic, sympodial conidiogenous cells (Réblová 2013). Additionally, synanamorphic conidia are produced from blastic, phialidic conidiogenous cells. The clear morphological distinctions among these genera, combined with their phylogenetic relationships, support the recognition of Multiseptisporium as a novel genus.</p></div>	https://treatment.plazi.org/id/F65D5EFF9BB852BABE143E8C69F1B831	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	Shen, Hong-Wei;Bao, Dan-Feng;Xiao, Xing-Juan;Bhat, Jayarama Darbhe;Lu, Yong-Zhong;Luo, Zong-Long	Shen, Hong-Wei, Bao, Dan-Feng, Xiao, Xing-Juan, Bhat, Jayarama Darbhe, Lu, Yong-Zhong, Luo, Zong-Long (2026): Morpho-phylogenetic evidence uncovers new taxa of lignicolous freshwater Sordariomycetes from Yunnan and Guizhou provinces, China. MycoKeys 128: 97-124, DOI: 10.3897/mycokeys.128.180553
352BFA7733B759269429F6EB088D4552.text	352BFA7733B759269429F6EB088D4552.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Platytrachelaceae H. W. Shen & Z. L. Luo 2026	<div><p>Platytrachelaceae H. W. Shen &amp; Z. L. Luo fam. nov.</p><p>Etymology.</p><p>The family name Platytrachelaceae is derived from the type genus Platytrachelon .</p><p>Type genus.</p><p>Platytrachelon Réblová, detailed description and illustrations by Réblová (2013).</p><p>Description.</p><p>Saprobic on decaying wood. Asexual morph: Hyphomycetous. Mycelium immersed to superficial, composed of pale brown to brown, septate, branched hyphae. Conidiophores semi-macronematous to macronematous, mononematous, cylindrical, septate, unbranched, or reduced to conidiogenous cells. Conidiogenous cells enteroblastic, mono- to polyblastic, phialidic, polytretic, integrated or discrete, terminal or intercalary, cylindrical, clavate, ampulliform, spherical, sympodial, with denticulate or collarette, proliferating or non-proliferating. Conidia solitary or in short chains, hyaline to dark brown, ellipsoidal, obovoid to cylindrical, obclavate to rostrate, falcate or filiform, aseptate to multi-septate, with or without a sheath and appendages. Sexual morph: Ascomata immersed to superficial, subglobose to globose, dark brown to black, uniloculate. Necks central, cylindrical, ostiolate. Peridium leathery, two-layered. Paraphyses hyaline, branched, septate. Asci 8 - spored, unitunicate, cylindric-clavate, long pedicellate, with an apical annulus. Ascospores uniseriate, hyaline, fusiform, septate.</p><p>Accepted genera.</p><p>Aquimonospora, Multiseptisporium, Paradiplococcium, and Platytrachelon .</p><p>Notes.</p><p>The new family Platytrachelaceae is proposed to accommodate Multiseptisporium gen. nov. and three previously monotypic genera, Aquimonospora, Paradiplococcium, and Platytrachelon, which were formerly placed in Diaporthomycetidae genera incertae sedis and Sordariomycetes genera incertae sedis (Hyde et al. 2024). In our multi-gene phylogenetic analyses, these four genera consistently formed an independent clade, clearly distinct from all currently recognized families within Diaporthomycetidae families incertae sedis (Fig. 1, Suppl. material 1: fig. S 1). Consistent results were also recovered in single-gene maximum likelihood analyses, in which Platytrachelaceae repeatedly emerged as an independent lineage distinct from other families and orders within Diaporthomycetidae (Suppl. material 1: figs S 2 – S 6). However, due to relatively low support values for the backbone of this lineage, we tentatively place it in Diaporthomycetidae families incertae sedis. The family is typified by the genus Platytrachelon, which was introduced by Réblová (2013) to accommodate P. abietis (formerly Ceratosphaeria abietis), based on a combination of morphological characteristics and phylogenetic placement. Platytrachelon abietis was originally described based on its sexual morph, and subsequent studies documented its asexual morph on PCA medium, including the presence of synanamorphs (Réblová 2013). Although Platytrachelon remains monotypic, it is currently the only genus within Platytrachelaceae for which both sexual and asexual morphs have been documented. This morphological completeness supports the designation of Platytrachelon as the type genus of Platytrachelaceae .</p></div>	https://treatment.plazi.org/id/352BFA7733B759269429F6EB088D4552	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	Shen, Hong-Wei;Bao, Dan-Feng;Xiao, Xing-Juan;Bhat, Jayarama Darbhe;Lu, Yong-Zhong;Luo, Zong-Long	Shen, Hong-Wei, Bao, Dan-Feng, Xiao, Xing-Juan, Bhat, Jayarama Darbhe, Lu, Yong-Zhong, Luo, Zong-Long (2026): Morpho-phylogenetic evidence uncovers new taxa of lignicolous freshwater Sordariomycetes from Yunnan and Guizhou provinces, China. MycoKeys 128: 97-124, DOI: 10.3897/mycokeys.128.180553
