identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
AAF66A274F56589EAC6BDB21B8C1F5AF.text	AAF66A274F56589EAC6BDB21B8C1F5AF.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Pseudocosmospora chlamydospora Xiao Qian Wu, Z. Q. Zeng & W. Y. Zhuang 2026	<div><p>Pseudocosmospora chlamydospora Xiao Qian Wu, Z. Q. Zeng &amp; W. Y. Zhuang sp. nov.</p><p>Figs 2, 3</p><p>Etymology.</p><p>The specific epithet refers to the chlamydospores produced in culture.</p><p>Typification.</p><p>China • Beijing City, Miyun District, roadside near Miyun Reservoir, on fruitbodies of Paraeutypella karsti growing on rotten bark, 8 September 2022, W. Y. Zhuang, Z. Q. Zeng &amp; H. D. Zheng, 13067 (holotype HMAS 255842, ex-type culture CGMCC 3.29438) .</p><p>Description.</p><p>Mycelium not visible on natural substratum. Perithecia superficial, solitary to gregarious, non-stromatic or with a basal stroma, subglobose to globose with a truncate apex, laterally collapsed upon drying, orange-red to bright red, turning dark red in 3 % KOH, becoming light yellow in 100 % LA, 144–217 × 101–185 μm. Perithecial walls of two layers, 17–28 μm thick; the outer layer of textura angularis, 10–21 μm thick, cells 2.5–8 × 1.6–4.1 μm, walls 0.9–1.4 μm thick; the inner layer of textura prismatica, 5–10 μm thick, cells 4.7–13.2 × 1.6–3.3 μm, walls 0.8–1.3 μm thick. Asci clavate, with a simple apex, eight-spored, 42.7–56.7 × 3.4–5.7 μm. Ascospores ellipsoidal, 1 - septate, hyaline to light yellow-brown, smooth-walled, uniseriate, overlapping obliquely, 5.9–8.8 × 3–4.7 μm.</p><p>Colony characteristics.</p><p>Colony on PDA 43 mm diam. after 28 d at 25 ° C, crustose, beige, light yellow to salmon-pink, on SNA 44 mm in diam. after 28 d at 25 ° C, with sparse whitish aerial mycelium. Conidiophores acremonium- to verticillium-like, septate, of indefinite length, hyaline, with 1–2 whorls and a terminal whorl of 2–4 phialides. Phialides subulate, tapering toward the apex, 5–24 μm long, 1.1–1.9 μm wide at the base, 0.6–1.2 μm wide at the tip. Conidia rod-shaped, fusiform, ellipsoidal, lemon-shaped or subglobose, rare clavate, unicellular, smooth, hyaline, non-guttulate, 2.5–5.7 × 1.3–2.7 μm. Chlamydospores globose to subglobose, rarely oblong, smooth-walled, hyaline, 3.4–8.4 μm in diam.</p><p>Notes.</p><p>Amongst the known species of Pseudocosmospora, P. chlamydospora most resembles P. rogersonii in similar host fungus, subglobose perithecia with a truncate apex, ellipsoidal and smooth ascospores, and pink colony on PDA (Herrera et al. 2013). However, the new species differs in having smaller asci (42.7–56.7 × 3.4–5.7 μm vs. 54–69 × 5.7–8.4 μm), shorter ascospores (5.9–8.8 μm vs. 7.9–12.2 μm), and producing globose to subglobose chlamydospores. Sequence comparisons revealed that there were 8 bp, 12 bp, 81 bp, 102 bp and 103 bp divergences detected for the ITS, LSU, tub 2, rpb 1 and tef 1 - α regions between P. chlamydospora and P. rogersonii (Table 3). The multi-gene phylogenetic analyses showed that P. chlamydospora is closely related to P. curvispora and two unnamed species (MLBS / MPBP / BIPP = 100 % / 100 % / 1.0). However, P. chlamydospora can be easily distinguished by its shorter asci (42.7–56.7 µm vs. 53–68 µm) and ascospores (5.9–8.8 µm vs. 8–10 µm), wider conidia (1.3–2.7 µm vs. 0.8–1.2 µm), and forming globose to subglobose chlamydospores (Zeng and Zhuang 2021) (Table 4). Thus, both the morphological feature and sequence data indicated that they represent different taxa.</p></div>	https://treatment.plazi.org/id/AAF66A274F56589EAC6BDB21B8C1F5AF	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	Wu, Xiao-Qian;Zhuang, Wen-Ying;Zeng, Zhao-Qing	Wu, Xiao-Qian, Zhuang, Wen-Ying, Zeng, Zhao-Qing (2026): Two new species of Pseudocosmospora (Hypocreales) revealed through morphological and phylogenetic analyses. MycoKeys 128: 285-300, DOI: 10.3897/mycokeys.128.180941
F1C424340A945684BD48D3D82856505E.text	F1C424340A945684BD48D3D82856505E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Pseudocosmospora chloroxantha Xiao Qian Wu, Z. Q. Zeng & W. Y. Zhuang 2026	<div><p>Pseudocosmospora chloroxantha Xiao Qian Wu, Z. Q. Zeng &amp; W. Y. Zhuang sp. nov.</p><p>Figs 4, 5</p><p>Etymology.</p><p>The specific epithet refers to the greenish yellow pigments on surface of colony.</p><p>Typification.</p><p>China • Beijing City, Yanqing District, Baili Landscape Gallery, on Paraeutypella karsti growing on rotten bark, 31 August 2022, W. Y. Zhuang, Z. Q. Zeng &amp; H. D. Zheng, 13057 (holotype HMAS 255843, ex-type culture CGMCC 3.29437) .</p><p>Description.</p><p>Mycelium not visible on the natural substratum. Perithecia superficial and gregarious, non-stromatic or with a basal stroma, subglobose to globose with a truncate apex, laterally collapsed upon drying, bright red to brownish red, turning dark red in 3 % KOH, becoming light yellow in 100 % LA, 132–230 × 127–210 μm. Perithecial walls of two-layers, 19–37 μm thick; the outer layer of textura globulosa to t. angularis, 11–24 μm thick, cells 2.8–11.7 × 2–5.5 μm, walls 0.8–1.4 μm thick; the inner layer of textura prismatica, 9–15 μm thick, cells 5.9–14.5 × 1.6–3.1 μm, walls 0.8–1.7 μm thick. Asci cylindrical to clavate, with a simple apex or with an apical ring, eight-spored, 53–76.8 × 4.7–9.2 μm. Ascospores ellipsoidal to broad ellipsoidal, 1 - septate, hyaline to light yellow-brown, smooth-walled, uniseriate, overlapping obliquely, 7.1–11.5 × 3.7–6.3 μm.</p><p>Colony characteristics.</p><p>Colony on PDA 46 mm in diam. after 28 d at 25 ° C, crustose, surface greenish yellow and reverse yellowish-brown, on SNA 42 mm in diam. after 28 d at 25 ° C, with sparse whitish aerial mycelium. Conidiophores acremonium- to verticillium-like, septate, of indefinite length, and hyaline, with 1–2 whorls and a terminal whorl of 2–4 phialides. Phialides subulate, tapering toward the apex, 9.6–31.1 μm long, 0.9–2 μm wide at the base, 0.8–1.4 μm wide at the tip. Conidia rod-shaped to cylindrical, rarely ellipsoidal, unicellular, smooth-walled, hyaline, non-guttulate, 2.6–8.5 × 1.2–2.4 μm.</p><p>Notes.</p><p>Among the existing species of the genus, P. chloroxantha is morphologically similar to P. rogersonii and P. chlamydospora in having similar hosts, subglobose and laterally collapsed perithecia with a truncate apex, ellipsoidal and smooth ascospores, and conidia without guttules (Herrera et al. 2013). However, P. chloroxantha differs from P. rogersonii in longer conidia (2.6–8.5 μm vs. 2.9–5.5 μm) and rod-shaped to cylindrical conidia, and differs from P. chlamydospora in larger asci (53–76.8 × 4.7–9.2 μm vs. 42.7–56.7 × 3.4–5.7 μm), longer ascospores (7.1–11.5 μm vs. 5.9–8.8 μm), rod-shaped to cylindrical conidia, and the absence of chlamydospores. Additionally, there were 15 bp, 4 bp, 81 bp, 98 bp and 101 bp nucleotide divergences between the type of P. chloroxantha and P. rogersonii, and 10 bp, 8 bp, 70 bp, 82 bp and 84 bp unmatched loci were found between the type of P. chloroxantha and P. chlamydospora in the ITS, LSU, tub 2, rpb 1 and tef 1 - α regions (Table 3). Phylogenetic analyses showed that P. chloroxantha is closely associated with P. beijingensis with strong support (MLBS / MPBP / BIPP = 98 % / 80 % / 1.0). However, the P. chloroxantha differs morphologically from the latter in having larger asci (53–76.8 × 4.7–9.2 µm vs. 38–58 × 2.5–5 μm), wider ascospores (3.7–6.3 µm vs. 2.5–4 µm), production of greenish yellow pigments in culture, and longer conidia (2.6–8.5 µm vs. 2.6–4.5 µm) (Table 4). Therefore, both morphological and molecular data support the establishment of P. chloroxantha .</p></div>	https://treatment.plazi.org/id/F1C424340A945684BD48D3D82856505E	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	Wu, Xiao-Qian;Zhuang, Wen-Ying;Zeng, Zhao-Qing	Wu, Xiao-Qian, Zhuang, Wen-Ying, Zeng, Zhao-Qing (2026): Two new species of Pseudocosmospora (Hypocreales) revealed through morphological and phylogenetic analyses. MycoKeys 128: 285-300, DOI: 10.3897/mycokeys.128.180941
