Mycokeys最新文献

{"title":"Discover hidden taxa of <i>Erysiphe</i> section <i>Erysiphe</i> fungi (Ascomycota, Erysiphaceae) based on morphology and multilocus phylogeny in China.","authors":"Zhao-Yang Zhang, Xue-Lian Wu, Xiao-Xue Lv, Tie-Zhi Liu, Dan-Ni Jin, Li Liu, Shuang-Bao Wang, Jing Feng, Tom Hsiang, Yu Li, Shu-Yan Liu","doi":"10.3897/mycokeys.118.154217","DOIUrl":"10.3897/mycokeys.118.154217","url":null,"abstract":"<p><p>Erysiphesect.Erysiphe, a taxonomically significant group within the genus <i>Erysiphe</i>, is distinguished from other <i>Erysiphe</i> sections by its mycelioid chasmothecial appendages. While approximately half of the known species in this section occur in China, our preliminary assessments suggest that a substantial number of cryptic taxa remain undetected. To address this knowledge gap, we conducted a comprehensive phylogeographic survey evaluating 78 specimens collected from 18 provinces (municipalities/autonomous regions) across China. Our integrative approach combined morphological characterization with molecular phylogenetic analyses using five DNA loci: internal transcribed spacer (ITS), 28S rDNA, intergenic spacer (IGS), RNA polymerase II subunit 2 (<i>RPB2</i>), and <i>β-tubulin</i> (<i>TUB</i>). This study led to the discovery of three newly described species (<i>E.clematidis</i> <b>sp. nov.</b> on <i>Clematis</i> spp., <i>E.limoniicola</i> <b>sp. nov.</b> on <i>Limonium</i> spp., and <i>E.paeoniae-suffruticosae</i> <b>sp. nov.</b> on <i>Paeonia×suffruticosa</i> and two newly recorded species from China (<i>E.malvae</i> on <i>Malvapusilla</i> and <i>E.punicae</i> on <i>Punicagranatum</i>). Notably, our phylogenetic framework demonstrates that incorporating IGS, <i>RPB2</i>, and <i>TUB</i> markers substantially enhances species-level resolution and provides critical insights into cryptic speciation within powdery mildews.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"118 ","pages":"119-146"},"PeriodicalIF":2.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12159665/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new genus and three new species of Lycoperdaceae (Agaricales) from Southern China revealed by molecular phylogeny and taxonomy.","authors":"Xin Yang, Songjing Duan, Mei Li, Dongxu Li, Rongcong Yang, Shihui Zhang, Taimin Xu, Wen Li, Hongmin Zhou, Changlin Zhao","doi":"10.3897/mycokeys.118.153703","DOIUrl":"10.3897/mycokeys.118.153703","url":null,"abstract":"<p><p>Lycoperdaceae (Agaricales, Agaricomycetes) is a taxonomically significant fungal family based on the globally distributed and morphologically defined puffball structures. In the present study, one new genus, <i>Lycoperdia</i>, and three new species, viz. <i>Calvatiaphlebioides</i>, <i>Lycoperdiatomentosa</i>, and <i>Morganellaminima</i>, collected from southern China are proposed based on a combination of morphological characteristics and molecular evidence. <i>Calvatiaphlebioides</i> is characterized by broadly obpyriform to turbinate basidiomes and globose to subglobose basidiospores with a short pedicel. <i>Lycoperdiatomentosa</i> is characterized by pyriform basidiomes, tomentose exoperidium, and globose to subglobose basidiospores with a long pedicel. <i>Morganellaminima</i> is characterized by tiny basidiomes (5-8 mm in diameter, 3-7 mm in height), globose to subglobose basidiospores with distinct spines, and a short pedicel (<0.5 μm). Sequences of the internal transcribed spacers (ITS), nuclear large subunit ribosomal RNA (nLSU), and RNA polymerase second largest subunit (rpb2) of the nuclear ribosomal DNA (rDNA) markers of the studied samples were generated, and the phylogenetic analyses were performed with maximum likelihood and Bayesian inference methods. The results showed that our collections were clustered within the family Lycoperdaceae. The phylogenetic tree inferred from the ITS+nLSU sequences revealed that all four new taxa were clustered into the family Lycoperdaceae, in which <i>Lycoperdiatomentosa</i> formed a monophyletic lineage. The phylogenetic tree inferred from the ITS+nLSU+<i>rpb2</i> sequences revealed that one new taxon, <i>Calvatiaphlebioides</i>, was clustered into the genus <i>Calvatia</i>, sister to <i>C.longisetulosa</i>. The phylogenetic tree inferred from the ITS+nLSU sequences revealed that <i>Morganellaminima</i> was clustered into the genus <i>Morganella</i>, forming a monophyletic lineage. Full morphological descriptions, illustrations, and phylogenetic analysis results for the new genus and three new species are provided.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"118 ","pages":"147-177"},"PeriodicalIF":2.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12159668/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphological characteristics and phylogenetic analysis reveal <i>Helvellosebacinafilicata</i> sp. nov. and <i>Sebacinaaciculicola</i> sp. nov. in Sebacinales from southwest China.","authors":"Jia-Hui Dong, Xin Zhang, Qian-Xin Guan, Fang Wu","doi":"10.3897/mycokeys.118.152160","DOIUrl":"10.3897/mycokeys.118.152160","url":null,"abstract":"<p><p>Morphological characteristics and phylogenetic analyses based on ITS and nLSU sequences reveal two new species of Sebacinaceae from southwest China, viz. <i>Helvellosebacinafilicata</i> <b>sp. nov.</b> and <i>Sebacinaaciculicola</i> <b>sp. nov.</b> The two species have similar micromorphology characterized by clampless hyphae, hyphidia with simple septa, longitudinally septate, 4-celled, ovoid to subglobose basidia, and broadly ellipsoid to ovoid basidiospores. However, <i>H.filicata</i> is characterized by cartilaginous to gelatinous, white to cream, sometimes semi-transparent basidiomata; basidiospores measuring 8.6-9.9 × 5.8-7.6 μm; and growth on dead ferns. <i>S.aciculicola</i> is characterized by coriaceous, white-to-cream basidiomata; basidiospores measuring 10.2-12.9 × 6.3-8.7 μm; and growth on needles and bark of <i>Pinus</i>. The two new species are described and illustrated in this study.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"118 ","pages":"105-118"},"PeriodicalIF":2.8,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12152491/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144276287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morpho-phylogenetic evidence reveals novel Bambusicolous fungi from Guizhou Province, China.","authors":"Yao Feng, Ya-Ya Chen, Chuan-Gen Lin, Zuo-Yi Liu, Xiao-Fang Chen, Guo-Shun Pei, Jian-Kui Liu","doi":"10.3897/mycokeys.118.149455","DOIUrl":"10.3897/mycokeys.118.149455","url":null,"abstract":"<p><p>The diversity and ecological importance of fungi associated with bamboo ecosystems are increasingly recognized, as these fungi play crucial roles in nutrient cycling and bamboo decomposition. This study identified five ascomycetous species from decaying bamboo stems in Guizhou, China. Phylogenetic analyses based on a concatenated dataset of SSU, ITS, LSU, <i>rpb2</i>, and <i>tef1-α</i> sequences confirmed their placement within the family Bambusicolaceae. Three new species, <i>Bambusicolapseudodimorphae</i>, <i>Bambusicolagelatinosospora</i>, and <i>Bambusicolaellipsospora</i>, are described as new to science, while two previously known species, <i>Bambusicolaautumnalis</i> and <i>Corylicolaitalica</i>, are also reported. Notably, this study provides the first account of the asexual morph of <i>Bambusicolaautumnalis</i>, and <i>Corylicolaitalica</i> is newly recorded from China. Comprehensive morphological descriptions, illustrations, and phylogenetic assessments are presented, contributing to the expanding knowledge of fungi. These findings underscore the importance of continued exploration of fungal diversity in bamboo ecosystems.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"118 ","pages":"81-103"},"PeriodicalIF":2.8,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12149888/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144267725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Four novel endolichenic fungi from <i>Usnea</i> spp. (Lecanorales, Parmeliaceae) in Yunnan and Guizhou, China: Taxonomic description and preliminary assessment of bioactive potentials.","authors":"Runlei Chang, Zhaoqi Yan, Jibo Jiang, Yichen Wang, Hongli Si, Tanay Bose, Congcong Miao","doi":"10.3897/mycokeys.118.155248","DOIUrl":"10.3897/mycokeys.118.155248","url":null,"abstract":"<p><p><i>Usnea</i> is one of the largest and most diverse genera of fruticose lichens with global distribution. Endolichenic fungi, which thrive within lichen thalli, have emerged as a promising source of bioactive compounds, with the ability to synthesise a variety of metabolites with biopharmaceutical potential. In this study, four isolates of endolichenic fungi isolated from <i>Usnea</i> spp. were identified using comprehensive multi-gene phylogenetic analyses. These isolates were evaluated for their anticancer, antifungal, and antibacterial properties, as well as for their ability to produce extracellular enzymes. Our findings revealed that the isolates represent four novel species, named as <i>Amphisphaeriafalcata</i>, <i>Kirschsteiniotheliatumidula</i>, <i>Neoroussoellaannulata</i>, and <i>Veronaeabrunneicolor</i>. Our screening assay showed <i>N.annulata</i> and <i>V.brunneicolor</i> exhibited cytotoxic effects against the H460 human lung cancer cell line, with moderate inhibitory activity at a concentration of 100 μg/mL. The four fungal isolates exhibited distinct antifungal profiles against phytopathogens: <i>Amphisphaeriafalcata</i> specifically inhibited <i>Fusariumgraminearum</i>, while <i>Veronaeabrunneicolor</i> showed broad-spectrum activity against <i>Botrytiscinerea</i>, <i>F.graminearum</i>, and <i>Alternariaalternata</i>. No antibacterial effects were detected in any isolates. These fungi exhibited a diverse array of extracellular enzyme activities, including amylase, protease, gelatinase, glucose oxidase, and cellulase. Collectively, these results underscore the considerable biotechnological potential of endolichenic fungi as sources of bioactive compounds with applications in drug discovery, agriculture, and environmental management. These findings also highlight the ecological importance of endolichenic fungi, suggesting that they may play multifaceted roles in lichen symbioses and their environments. Continued exploration of these fungi is essential for unlocking their full pharmacological and industrial potential.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"118 ","pages":"55-80"},"PeriodicalIF":2.8,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12149887/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144267724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphological and phylogenetic analysis reveal three new species <i>Phyllosticta</i> (Phyllostictaceae, Botryosphaeriales) in China.","authors":"Meng-Yuan Zhang, Zhao-Xue Zhang, Du-Hua Li, Xiu-Guo Zhang, Ji-Wen Xia, Zhuang Li","doi":"10.3897/mycokeys.118.153609","DOIUrl":"10.3897/mycokeys.118.153609","url":null,"abstract":"<p><p><i>Phyllosticta</i> (Phyllostictaceae, Botryosphaeriales) species have been reported worldwide and collected from various plant hosts. We proposed three new species, viz., <i>Phyllostictaelliptica</i> <b>sp. nov.</b>, <i>P.rhododendri</i> <b>sp. nov.</b>, and <i>P.wuzhishanensis</i> <b>sp. nov.</b>, based on multi-locus phylogenetic analysis using a combined dataset of ITS rDNA, LSU, <i>tef1</i>, ACT, and GPDH, along with morphological characteristics. Moreover, <i>P.capitalensis</i>, isolated from the leaves of <i>Mangiferaindica</i>, is redescribed herein. We have re-examined the six species complexes: the <i>P.capitalensis</i> species complex (including 32 species), <i>P.concentrica</i> species complex (including 32 species), <i>P.cruenta</i> species complex (including 22 species), <i>P.owaniana</i> species complex (including six species), <i>P.rhodorae</i> species complex (including two species), and <i>P.vaccinii</i> species complex (including two species). Detailed descriptions and illustrations of the new species are provided. These findings enrich the biodiversity of fungi and provide reference for subsequent research.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"118 ","pages":"35-54"},"PeriodicalIF":2.8,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12142213/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144250467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two new species of <i>Gymnopus</i> sect. <i>Levipedes</i> (Omphalotaceae, Agaricales) from Central and North China.","authors":"Jia-Jun Hu, Yong-Lan Tuo, Zheng-Xiang Qi, Dong-Hua Jiang, Yu Li, Bo Zhang","doi":"10.3897/mycokeys.118.143277","DOIUrl":"10.3897/mycokeys.118.143277","url":null,"abstract":"<p><p>The genus <i>Gymnopus</i> has a long research history and is known for its high species diversity worldwide. However, its species diversity in China remains poorly understood. Through a combination of detailed morphological studies and phylogenetic analysis, this study described two new species from Northeast and Central China, <i>Gymnopusbiyangensis</i> and <i>Gymnopussinodryophilus</i>, both belonging to Gymnopussect.Levipedes. <i>Gymnopusbiyangensis</i> is characterized by basidiomata appearing in summer and originating from broad-leaved forests, a dark reddish-brown pileus, a cylindrical to clavate stipe, and clavate to cylindrical, diverticulate cheilocystidia. <i>Gymnopussinodryophilus</i> differs by the yellowish-white to light brown basidiomata arising from coniferous and broad-leaved mixed forests, coralloid but inflated pileipellis terminal cells, and an apex of cheilocystidia not coralloid. Additionally, a key to the reported species of Gymnopussect.Levipedes in China is provided.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"118 ","pages":"19-34"},"PeriodicalIF":2.8,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12123368/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144200577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two new species of <i>Neohelicosporium</i> (Tubeufiaceae, Tubeufiales) from freshwater and terrestrial habitats in China.","authors":"Xiao-Yan Ma, Yong-Zhong Lu, Lei He, Dan-Dan Song, Jian Ma","doi":"10.3897/mycokeys.118.151514","DOIUrl":"10.3897/mycokeys.118.151514","url":null,"abstract":"<p><p><i>Neohelicosporium</i> species are a group of helicosporous hyphomycetes with the potential to produce novel bioactive natural compounds. During our investigation on helicosporous hyphomycetes, six isolates were collected from freshwater and terrestrial habitats in the tropical and subtropical regions of southern China. Based on multi-gene phylogenetic analyses (LSU-ITS-<i>tef</i>1-α-<i>rpb</i>2) and morphological comparisons of <i>Neohelicosporium</i> taxa, two new species (<i>N.guizhouense</i> and <i>N.wuzhishanense</i>) are introduced. Detailed micro-morphological descriptions, illustrations, and DNA molecular data are provided for the newly introduced species to confirm their taxonomic placements.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"118 ","pages":"1-17"},"PeriodicalIF":2.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12107276/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144175385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Papiliomycessinensis</i> (Clavicipitaceae) and <i>Paraisariapseudoarcta</i> (Ophiocordycipitaceae), two new species parasitizing Lepidopteran insects from southwestern China.","authors":"Hui Chen, Shabana Bibi, Ling Tao, Xiangchun Shen, Jun Zhao, Yueming Sun, Qirui Li, Dexiang Tang, Yao Wang","doi":"10.3897/mycokeys.117.150376","DOIUrl":"10.3897/mycokeys.117.150376","url":null,"abstract":"<p><p><i>Cordyceps</i> <i>sensu lato</i> species are highly important for medicinal purposes and functional food nutrients. Two new species belonging to <i>Cordyceps</i> <i>sensu lato</i> are introduced, i.e., <i>Papiliomycessinensis</i> and <i>Paraisariapseudoarcta</i>. To comprehensively describe the significance of these two species, morphological data were supplemented with phylogenetic analyses based on six loci (nrSSU, ITS, nrLSU, <i>tef-1α</i>, <i>rpb1</i>, and <i>rpb2</i>). Phylogenetically, <i>Pap.sinensis</i> is most closely related to <i>Pap.albostromaticus</i> and <i>Pap.shibinensis</i>, yet it can be distinguished from them by its larger stromata (51.3-85.7 × 3.1-3.5 vs. 37.0-58.0 × 2.5-3.0) and longer phialides (10.1-26.9 × 0.9-3.3 vs. 9.8-24.3 × 1.5-3.1). <i>Paraisariapseudoarcta</i> is phylogenetically sister to <i>Par.arcta</i>. The longer stromata (43-51 vs. 16) and larger secondary ascospores (5.6-8.3 × 1.7-3.1 vs. 2.6-4.2 × 0.5-1.3) in <i>Par.pseudoarcta</i> are characteristics that distinguish the two species. A thorough morphological description and phylogenetic analysis of <i>Pap.sinensis</i> and <i>Par.pseudoarcta</i> were provided. In addition, taxonomic misconceptions of <i>Par.gracilis</i> (Ophiocordycipitaceae) were corrected.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"117 ","pages":"353-374"},"PeriodicalIF":2.8,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12099317/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144144175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phylogenetic evidence reveal a close relationship between <i>Amphichorda</i> and <i>Ovicillium</i> in Bionectriaceae (Hypocreales).","authors":"Yao Wang, De-Xiang Tang, Hui Chen, Qi-Rui Li, Chanhom Loinheuang, Xiang-Chun Shen","doi":"10.3897/mycokeys.117.151366","DOIUrl":"10.3897/mycokeys.117.151366","url":null,"abstract":"<p><p>Animal excrement serves as the primary substrate for <i>Amphichorda</i>, which is found in a wide range of habitats. Based on evolutionary relationships, the genus is currently classified within the Bionectriaceae. However, the phylogenetic position of <i>Amphichorda</i> and its associated taxa remains unresolved due to limited sampling in previous studies. Here, we discovered and identified five <i>Amphichorda</i> species, significantly advancing our understanding of this genus. Using six genomic loci (ITS, nrSSU, nrLSU, <i>tef1α</i>, <i>rpb1</i>, and <i>rpb2</i>) to expand taxonomic sampling, we reconstructed a phylogenetic framework for the Bionectriaceae, with a focus on <i>Amphichorda</i> and related taxa. Phylogenetic analyses revealed a close genetic connection between <i>Amphichorda</i> and related genera, yet they formed distinct clades within the Bionectriaceae and were clearly differentiated. The extensive sampling demonstrated stable phylogenetic relationships among <i>Amphichorda</i>, <i>Hapsidospora</i>, <i>Ovicillium</i>, <i>Proxiovicillium</i>, and <i>Bulbithecium</i>. Furthermore, we described two new species, <i>A.guizhouensis</i> <b>sp. nov.</b> and <i>O.pseudoattenuatum</i> <b>sp. nov.</b>, supported by DNA data and morphological characteristics. A comprehensive comparison of morphological traits across all members of <i>Amphichorda</i> and <i>Ovicillium</i> was conducted. This study clarifies taxonomic boundaries and evolutionary relationships within the two genera and contributes to the overall understanding of the biodiversity and systematics of the Bionectriaceae.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"117 ","pages":"337-352"},"PeriodicalIF":2.8,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12099312/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144144176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}