identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
2E2F053DED7550C58D45B328D6B08B2B.text	2E2F053DED7550C58D45B328D6B08B2B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Trichomerium guiyangense X. L. Deng & X. Y. Zeng 2026	<div><p>Trichomerium guiyangense X. L. Deng &amp; X. Y. Zeng sp. nov.</p><p>Fig. 2</p><p>Etymology.</p><p>In reference to the location where the specimen was collected</p><p>Description.</p><p>Black sheets of superficial mycelia cover the surface of leaves of the host. Hyphae cylindrical, light brown to brown, septate. Sexual morph. Ascomata up to 260.4 µm in diameter, subglobose to globose, black, sessile, with an ostiole, with scattered setae on the upper surface. Setae 62.8–86.6 µm long (x ̄ = 76.5, n = 10), dark brown or olivet, aseptate, straight. Asci 45.5–54.1 × 10.4–18.2 µm (x ̄ = 49.8 × 14.5 µm, n = 10), bitunicate, 8 - spored, cylindrical to clavate. Ascospores 14–18.3 × 4.3–5.6 µm (x ̄ = 17.2 × 4.8 µm, n = 10), oblong-ellipsoid, slightly narrow and blunt ends, widest at the center, hyaline, overlapping 2–3 seriate, 2 - transverse septa, constricted at septa, with sparse guttules, without mucous sheath. Asexual morph. Undetermined.</p><p>Material examined.</p><p>China • Guizhou Province, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=106.69444&amp;materialsCitation.latitude=26.60389" title="Search Plazi for locations around (long 106.69444/lat 26.60389)">Guiyang City</a>, 26°36'14"N, 106°41'40"E, on living leaves of Iris sp., 15 May 2023, Yuwei Liu, QLS 42 (HGUP 230079, holotype), ex-type, GUCC 23-0130</p><p>Notes.</p><p>Trichomerium guiyangense has morphological characteristics similar to those of other species in the genus Trichomerium, such as ascomata with setae and bitunicate asci with hyaline ascospores. In the phylogenetic analysis, the strain GUCC 23-0130 forms a distinct clade with high node support (ML / BI = 92 / 1), and from the topology, it is phylogenetically distant from neighboring species (Fig. 1). BLAST results revealed nucleotide differences between T. guiyangense and its relatives, showing 10 % (499 / 555 nucleotides, 5 gaps) in ITS and 2 % (798 / 811 nucleotides, 0 gaps) in LSU compared to T. cicatricatum, and 4 % (553 / 575 nucleotides, 9 gaps) in ITS and 2 % (804 / 818 nucleotides, 0 gaps) in LSU compared to T. camporesii . Morphologically, T. guiyangense differs from closely related species by its large ascomata (up to 196 µm diameter), and it differs from T. bhatii by its 2 - seriate (vs. 3 - seriate) ascospores (Table 3). Other species different from this species include T. cicatricatum, which only exhibits an asexual morph, and T. guiyangense, which possesses a sexual morph. Compared to T. camporesii, this species has larger asci (45.5–54.1 × 10.4–18.2 µm vs. 55–60 × 20–25 µm) and smaller ascospores (14–18.3 × 4.3–5.6 µm vs. 25–30 × 5–10 µm) (Hyde et al. 2020) (Table 3). Hence, based on both morphology and phylogeny, we identify our specimens as a new species.</p></div>	https://treatment.plazi.org/id/2E2F053DED7550C58D45B328D6B08B2B	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	Deng, Xiaolu;Liu, Yuwei;Hongsanan, Sinang;Yang, Tian;Feng, Yuzhe;Sun, Jipeng;Zeng, Xiang-Yu	Deng, Xiaolu, Liu, Yuwei, Hongsanan, Sinang, Yang, Tian, Feng, Yuzhe, Sun, Jipeng, Zeng, Xiang-Yu (2026): Two new species of Trichomerium (Trichomeriaceae, Chaetothyriales) from Guizhou Province, China. MycoKeys 137: 223-239, DOI: 10.3897/mycokeys.137.177643
6E275633C2805CB3A13E48FB36FBF30D.text	6E275633C2805CB3A13E48FB36FBF30D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Trichomerium xishuiense X. L. Deng & X. Y. Zeng 2026	<div><p>Trichomerium xishuiense X. L. Deng &amp; X. Y. Zeng sp. nov.</p><p>Fig. 3</p><p>Etymology.</p><p>In reference to the location where the specimen was collected</p><p>Description.</p><p>Black sheets of superficial mycelia cover the surface of leaves of the host. Hyphae are septate, cylindrical, light brown to brown. Sexual morph. Ascomata up to 260.4 µm in diameter, subglobose to globose, sessile, with an ostiole, with scattered setae on the upper surface. Setae 42.74–57.49 µm long (x ̄ = 50.39 µm, n = 10), dark brown or olive. Asci 58.74–68.72 × 7.1–14.6 µm (x ̄ = 64.35 × 9.97 µm, n = 10), bitunicate, 8 - spored, cylindrical to clavate. Ascospores 15.6–26.3 × 4.5–5.5 µm (x ̄ = 19.35 × 4.5 µm, n = 10), spindle-shaped, with bluntly rounded ends, slightly, transparent, arranged in overlapping patterns, 1–2 - septate, constricted at septa, with guttules, without mucous sheath. Asexual morph. Undetermined.</p><p>Material examined.</p><p>China • Guizhou Province, Xishui County, 28°29'50"N, 106°23'24"E, 14 April 2023, Yuwei Liu, XS 3 J (HGUP 23-0080, holotype), ex-type, GUCC 23-0131 .</p><p>Notes.</p><p>Trichomerium xishuiense is characterized by a combination of traits common in the genus, such as setose ascomata and bitunicate asci with hyaline ascospores. The phylogenetic tree constructed based on ITS and LSU gene sequences (Fig. 1) indicates that strain GUCC 23-0130 forms an independent branch cluster within the Trichomerium clade with high statistical support (ML / BI = 100 / 1). Phylogenetically, Trichomerium is also close to Formicomyces and T. bambusae, forming sister groups with each other. Compared to its closest sister species, T. bambusae, the two share 11 % sequence divergence in the ITS region (379 / 426 bases, including 3 gaps). Despite this phylogenetic affinity to Formicomyces, T. xishuiense exhibits the characteristic sexual morph with setose ascomata and bitunicate asci, aligning it morphologically with the genus Trichomerium rather than the asexual, morphologically distinct genus Formicomyces . Formicomyces has been found only in its asexual phase to date. Its most distinctive feature is the apical modification of the conidiophore into a funnel-shaped or cup-like collar structure, which produces single-celled, morphologically simple, elliptical to lemon-shaped conidia (Igor et al. 2023). The genus Trichomerium, to which T. xishuiense belongs, is not only known for its sexual phase but also possesses a distinctive asexual phase. This phase typically produces dark-colored, structurally complex, multi-segmented conidia that aggregate into unique multi-armed stellate structures. These clear morphological evidences confirm that T. xishuiense should be classified within the genus Trichomerium rather than Formicomyces . Moreover, T. xishuiense differs from its sister species T. bambusae in its larger ascomata (up to 260.4 µm in diam. vs. 180 × 105–130 µm), its sessile and larger asci (58.74–68.72 × 7.1–14.6 µm vs. 53–62 × 19–24 µm), and its 1–2 - septate, constricted ascospores (vs. 3 - septate and non-constricted). Therefore, based on its unique phylogenetic position, significant molecular differences, and clear morphological and ecological distinctions from closely related species, T. xishuiense is a new species.</p></div>	https://treatment.plazi.org/id/6E275633C2805CB3A13E48FB36FBF30D	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	Deng, Xiaolu;Liu, Yuwei;Hongsanan, Sinang;Yang, Tian;Feng, Yuzhe;Sun, Jipeng;Zeng, Xiang-Yu	Deng, Xiaolu, Liu, Yuwei, Hongsanan, Sinang, Yang, Tian, Feng, Yuzhe, Sun, Jipeng, Zeng, Xiang-Yu (2026): Two new species of Trichomerium (Trichomeriaceae, Chaetothyriales) from Guizhou Province, China. MycoKeys 137: 223-239, DOI: 10.3897/mycokeys.137.177643
