Mycokeys最新文献

{"title":"Two novel <i>Tuber</i> species (Tuberaceae, Pezizales) from southwestern China based on morphological and molecular evidence.","authors":"Tian-Jun Yuan, Hong-Mei Luo, Kai-Mei Su, Shu-Hong Li, E-Xian Li","doi":"10.3897/mycokeys.119.143714","DOIUrl":"10.3897/mycokeys.119.143714","url":null,"abstract":"<p><p>Based on morphological and molecular phylogenetic analyses, two new species, <i>Tubermarroninum</i> and <i>Tuberconditum</i>, belonging to the Latisporum group, were described from Yunnan province of southwest China. Morphologically, <i>Tubermarroninum</i> is distinguished from other Latisporum species by whitish and glabrous ascomata and a two-layered peridium, measuring 150-200 µm in total thickness, with an outer layer ranging from 40-60 µm. <i>Tuberconditum</i> is diagnosed by its thinner peridium (120-200 µm) and larger ascospores (49-66.5 × 34.5-60 μm in one-spored asci). According to the outcome of the ITS rDNA sequence analysis, the species of <i>T.marroninum</i> and <i>T.conditum</i> each form a distinct and well-supported group within the Latisporum group, respectively.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"119 ","pages":"295-314"},"PeriodicalIF":2.8,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12274894/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144676236","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>Pseudobaorangia</i> (Boletaceae, Boletales), a new genus for <i>Boletuslakhanpalii</i>.","authors":"Fan Zhou, Junbo Zhang, Shaoxiong Liu, Qimeng Liu, Xi Luo, Xiaokun Luo, Lei Wang, Chunli Liu, Xiang Guo, Yunli Feng, Dafeng Sun, Rong Hua","doi":"10.3897/mycokeys.119.144869","DOIUrl":"10.3897/mycokeys.119.144869","url":null,"abstract":"<p><p>Bolete specimens collected in Baima Snow Mountain Nature Reserve, Yunnan Province, were identified as <i>Pseudobaorangialakhanpalii</i>, based on morphological and phylogenetic analyses. The ITS sequences of our collections exhibited a high similarity with <i>Boletuslakhanpalii</i> (99.53% for KEF13271 and 99.44% for KEF13272). However, because of limited molecular data and complex taxonomic relationships of Boletaceae, the phylogenetic placement of <i>B.lakhanpalii</i> could not be clearly determined. This study conducted a phylogenetic analysis by combining nrLSU, <i>RPB2</i> and <i>TEF1-α</i> genes, and the results showed that this species has a close phylogenetic relationship with <i>Baorangia</i>, sharing some morphological characteristics, but also having several highlighting differences. Therefore, a new genus <i>Pseudobaorangia</i> is proposed with <i>P.lakhanpalii</i> as the type species and its detailed description is provided.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"119 ","pages":"281-294"},"PeriodicalIF":2.8,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12272083/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144676235","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>Fulvifomes</i> (Hymenochaetales, Basidiomycota) from South America.","authors":"Jian Chen, Yuan Yuan, Kai-Yue Luo, Josef Vlasák","doi":"10.3897/mycokeys.119.158957","DOIUrl":"10.3897/mycokeys.119.158957","url":null,"abstract":"<p><p>Two new species of <i>Fulvifomes</i> are described from specimens collected in South America (Ecuador and Bolivia) based on morphological and molecular evidence. The species <i>Fulvifomesbolivianus</i> is characterized by perennial, pileate, solitary basidiocarp; ungulate pilei; olivaceous, encrusted, rough, concentrically sulcate, irregularly cracked pileal surface; umber and glossy pore surface; circular pores measuring 7-8 per mm; thick and entire dissepiments; a dimitic hyphal system; and subglobose basidiospores measuring 4.7-5.4 × 4-4.5 µm. <i>Fulvifomesfragilis</i> is characterized by annual, pileate, imbricate basidiocarps; curry yellow to yellowish brown pileal surface; yellowish brown and narrow pileal margin; yellow and rugged pore surface; circular to elliptical pores measuring 5-6 per mm; thick and entire dissepiments; a dimitic hyphal system; and broadly ellipsoid basidiospores measuring 3.9-5.1 × 3-3.7 µm. Phylogenetically, the two new species formed two distinct lineages in the <i>Fulvifomes</i> clade based on internal transcribed spacer (ITS) and nuclear-encoded large subunit rRNA gene (nLSU) sequences. The differences between the new species and morphologically similar and phylogenetically related species are also discussed.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"119 ","pages":"263-279"},"PeriodicalIF":2.8,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12264497/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144650975","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":"Multi-locus molecular phylogenetic analysis reveals four new species and a new record of <i>Ophiocordyceps</i> (Ophiocordycipitaceae, Hypocreales) on dipteran hosts in Thailand.","authors":"Suchada Mongkolsamrit, Donnaya Thanakitpipattana, Wasana Noisripoom, Kanoksri Tasanathai, Kanraya Liangsiri, Somruetai Jaiyen, Nattawut Rungjindamai, Marc Stadler, Jennifer Luangsa-Ard","doi":"10.3897/mycokeys.119.155439","DOIUrl":"10.3897/mycokeys.119.155439","url":null,"abstract":"<p><p>During field surveys conducted in various regions of Thailand, several fungal specimens parasitising flies were discovered. These fungi exhibited morphological characteristics consistent with the broad concept of <i>Ophiocordycepsdipterigena</i>, including yellow to orange-brown cylindrical stromata bearing fertile ascomata at the tip. Multi-locus phylogenetic analyses based on ITS, LSU, <i>TEF1</i>, and <i>RPB2</i> sequences revealed that these specimens belong to a well-supported monophyletic clade, referred to as the '<i>O.dipterigena</i>' complex, which forms a distinct subclade within the hymenostilboid clade. This complex comprises four newly described species with clearly defined host associations: <i>O.floriformis</i>, found on robber flies (Asilidae), particularly on <i>Clephydroneura</i> sp.; <i>O.muscae</i>, isolated from the housefly (<i>Muscadomestica</i>); <i>O.tabani</i>, parasitising horse flies (<i>Tabanus</i> sp.); and <i>O.thilosuensis</i>, infecting fruit flies (<i>Anastrephaobliqua</i>) and soldier flies (Sarginae). Additionally, several strains clustered with the previously described <i>O.philippinensis</i>, which was also collected from <i>Clephydroneura</i> sp. This marks the first record of <i>O.philippinensis</i> in Thailand.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"119 ","pages":"235-261"},"PeriodicalIF":2.8,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12260605/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144643923","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":"Taxonomy and phylogeny of Irpicaceae and Meruliaceae (Polyporales, Basidiomycota) with descriptions of four new species from southwestern China.","authors":"Zirui Gu, Chunqin Zhou, Jianling Zhang, Yu Liu, Qiaohua Deng, Rongcong Yang, Shunqiang Yang, Changlin Zhao","doi":"10.3897/mycokeys.119.157018","DOIUrl":"10.3897/mycokeys.119.157018","url":null,"abstract":"<p><p>Wood-decaying fungi play crucial roles as decomposers in forest ecosystems. In this study, four new wood-inhabiting fungi from Yunnan Province of southwest China-<i>Crystallicutisalbomarginata</i>, <i>Efibulaglossophora</i>, <i>E.punctata</i>, and <i>Scopuloidesfarinacea</i>-are described and illustrated based on morphological and molecular evidence. The species <i>C.albomarginata</i> is characterized by its slightly pink to orange basidiomata when dry, a monomitic hyphal system with simple septa, and narrowly ellipsoid basidiospores measuring 3.7-4.4 × 1.9-2.8 µm. The taxon <i>E.glossophora</i> is characterized by its hard, membranous, slightly yellow to yellow basidiomata; a monomitic hyphal system with simple-septate generative hyphae; and ellipsoid basidiospores measuring 3.8-6 × 2.6-3.7 µm. The species <i>E.punctata</i> is characterized by its membranaceous, slightly gray to pale brown basidiomata; a monomitic hyphal system with simple-septate generative hyphae; and ellipsoid basidiospores measuring 4.3-6.2 × 2.2-3.3 µm. Additionally, the taxon <i>S. farinacea</i> is characterized by its coriaceous, pale cream to buff basidiomata; a monomitic hyphal system with simple-septate generative hyphae; and ellipsoid basidiospores measuring 2.8-3.5 × 1.4-2 µm. Sequences of the internal transcribed spacer region (ITS), the large subunit nuclear ribosomal RNA gene (nLSU), the translation elongation factor 1-α gene (TEF1), the largest subunit of RNA polymerase II (RPB1), and the second subunit of RNA polymerase II (RPB2) of the studied samples were employed, and phylogenetic analyses were performed using maximum likelihood, maximum parsimony, and Bayesian inference methods, ensuring the robustness of the findings. Based on the combined ITS + nLSU + RPB1 + RPB2 + TEF1 dataset, phylogenies of the two families Irpicaceae and Meruliaceae were constructed. In these analyses, <i>Crystallicutisalbomarginata</i> was recovered as sister to <i>C.serpens</i>; <i>E.punctata</i> as sister to <i>E.intertexta</i>; <i>Efibulaglossophora</i> as closely related to <i>E.intertexta</i> and <i>E.hainanensis</i>; and the new species <i>S. farinacea</i> as sister to <i>S. allantoidea</i>.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"119 ","pages":"197-234"},"PeriodicalIF":2.8,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12254828/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144627499","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 diversity of <i>Colletotrichum</i> species (Sordariomycetes, Glomerellales, Glomerellaceae) associated with plant diseases in Thailand.","authors":"Deecksha Gomdola, Rajesh Jeewon, Eric H C McKenzie, Ruvishika S Jayawardena, Fatimah Al-Otibi, Xia Tang, Yong Wang, Kevin D Hyde, Li Fu","doi":"10.3897/mycokeys.119.152323","DOIUrl":"10.3897/mycokeys.119.152323","url":null,"abstract":"<p><p><i>Colletotrichum</i> is a cosmopolitan fungal genus, and its species are known for their important role as plant pathogens. They also occur as endophytes and saprobes. The genus comprises species complexes, many of which include cryptic species that are morphologically similar but phylogenetically distinct. <i>Colletotrichum</i> is characterized by globose to subglobose ascomata and acervular conidiomata and hyaline, aseptate ascospores and conidia, although a few species produce septate ascospores. Ascospores are typically cylindrical, oval, or fusiform, while conidia are mostly ellipsoidal to ovoid. Many <i>Colletotrichum</i> species also produce appressoria, which are formed at the tips of germ tubes or directly from the mycelium. In this study, we collected diseased leaves and pods with spots, blight, and blotches from Chiang Mai, Chiang Rai, and Tak provinces in Thailand. For species identification and delimitation, we employed a biphasic approach incorporating morphological data and multigene phylogenetic analyses of the locus of the internal transcribed spacer (ITS, nuclear rDNA consisting of ITS1-5.8S-ITS2) and the genes encoding for glyceraldehyde-3-phosphate dehydrogenase (<i>GAPDH</i>), chitin synthase 1 (<i>CHS</i>1), actin (<i>ACT</i>), beta-tubulin 2 (<i>TUB</i>2), histone (<i>H</i>3), and calmodulin (<i>CAM</i>). We obtained 20 <i>Colletotrichum</i> isolates representing eight species, among which we propose two new species: <i>Colletotrichumdendrobii</i> (from <i>Dendrobium</i> sp.) and <i>C.musichiangmaiense</i> (from <i>Musa</i> sp.). We also establish 13 new host records (for six species): <i>C.castaneae</i> (on <i>Jasminumgrandiflorum</i>), <i>C.chrysophilum</i> (on <i>Terminalia</i> sp.), <i>C.endophyticum</i> (on <i>Artocarpusheterophyllus</i>, <i>Begonialuxurians</i>, <i>Cassia</i> sp., <i>Castanopsis</i> sp., <i>Ficusauriculata</i>, and <i>Schefflera</i> sp.), <i>C.fructicola</i> (on <i>Castanea</i> sp., <i>Hedychium</i> sp., and <i>Rhododendron</i> sp.), <i>C.jiangxiense</i> (on <i>Artocarpus</i> sp.), and <i>C.schimae</i> (on <i>Jasminum</i> sp.). In addition, this is the first study to present the sexual morph of <i>C.endophyticum</i>.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"119 ","pages":"137-195"},"PeriodicalIF":2.8,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12246801/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144627498","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":"Three new species of <i>Carlosrosaea</i> (Trimorphomycetaceae, Tremellales) from China.","authors":"Wan-Li Gao, Chun-Yue Chai, Qiu-Hong Niu, Feng-Li Hui","doi":"10.3897/mycokeys.119.151751","DOIUrl":"10.3897/mycokeys.119.151751","url":null,"abstract":"<p><p><i>Carlosrosaea</i> is a genus of plant-associated yeasts within the family Trimorphomycetaceae of the order Tremellales. Currently, eight species have been described and accepted as members of the genus <i>Carlosrosaea</i>. In this study, six <i>Carlosrosaea</i> strains were isolated from the surface of leaves of the genera <i>Camellia</i>, <i>Distylium</i>, <i>Glechoma</i>, and <i>Glochidion</i>, collected in Fujian, Guizhou, Hainan, and Henan provinces. Based on phylogenetic analyses and phenotypic characterization, these strains were identified as three new <i>Carlosrosaea</i> species: <i>C.camelliae</i> <b>sp. nov.</b> (holotype CICC 33566^T), <i>C.glechomae</i> <b>sp. nov.</b> (holotype CICC 33632^T), and <i>C.wuzhiensis</i> <b>sp. nov.</b> (holotype GDMCC 2.526^T). Descriptions, illustrations, and phylogenetic data of these new taxa are provided. This study enhances knowledge of <i>Carlosrosaea</i> species diversity in China and provides a foundation for future taxonomic and ecological research.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"119 ","pages":"123-135"},"PeriodicalIF":2.8,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12238992/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144610052","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":"Overview of hirsutella-like anamorphs in <i>Ophiocordyceps</i> (Sordariomycetes, Ophiocordycipitaceae): introducing two new species and one new record from China.","authors":"Shi-Wen Xie, De-Ping Wei, Jun-Zhi Qiu, Xing-Can Peng, Ji-Chuan Kang, Zhang-Jiang He, Zeng-Zhi Li, Chun-Ru Li, Shi-Ke Huang, Xian Zhang, Zhong-Liang Liu, Jing Bu, Nalin N Wijayawardene, Ting-Chi Wen","doi":"10.3897/mycokeys.119.145174","DOIUrl":"10.3897/mycokeys.119.145174","url":null,"abstract":"<p><p><i>Ophiocordyceps</i>, a species-rich genus in Ophiocordycipitaceae, is a holomorphic genus in which most of the species are reported with hirsutella-like anamorphs. In this study, we introduce two new species of hirsutella-like anamorphs from lepidopteran larvae (viz., <i>Ophiocordycepstielingensis</i> <b>sp. nov.</b> and <i>Ophiocordycepskeqinii</i> <b>sp. nov.</b>). <i>Ophiocordycepsradiata</i> (syn. <i>Hirsutellaradiata</i>), a new combination, exhibits a pathogenic association with a fly, and it is reported as a new geographic record from China, based on integrated morphological and molecular analyses. We provide a checklist of <i>Ophiocordyceps</i> species with hirsutella-like anamorphs and comprehensively review their characteristics of anamorphs and teleomorphs. These definitive findings establish a foundation for the classification and diversity of <i>Ophiocordyceps</i> species with hirsutella-like anamorphs.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"119 ","pages":"95-121"},"PeriodicalIF":2.8,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12239012/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144610050","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":"Morphology and multigene phylogeny reveals five new species of Hydnaceae (Cantharellales, Basidiomycota) from China.","authors":"Qian Zhou, Chengbin Qian, Chuyun Zhang, Qidong Su, Yiliang Li, Shihui Zhang, Nian Mu, Taimin Xu, Hongmin Zhou, Changlin Zhao","doi":"10.3897/mycokeys.119.154387","DOIUrl":"10.3897/mycokeys.119.154387","url":null,"abstract":"<p><p>Wood-inhabiting fungi play a fundamental role in ecosystem processes, particularly in wood degradation and the recycling of organic matter. In this study, a new genus, <i>Clavuliella</i> <b>gen. nov.</b>, and five new species, viz. <i>Burgellaalbofarinacea</i> <b>sp. nov.</b>, <i>B.fissurata</i> <b>sp. nov.</b>, <i>Burgoawumengshanensis</i> <b>sp. nov.</b>, <i>Clavuliellasinensis</i> <b>sp. nov.</b>, and <i>Sistotremasinense</i> <b>sp. nov.</b>, are described from China and illustrated based on morphological characteristics and molecular phylogenetic analyses. Sequences of the ITS+nLSU genes were used for the phylogenetic analyses using Maximum Likelihood, Maximum Parsimony, and Bayesian Inference methods. The phylogram of the family Hydnaceae, based on the ITS+nLSU rDNA gene regions, included four genera; <i>Burgella</i>, <i>Burgoa</i>, <i>Clavuliella</i> and <i>Sistotrema.</i> The topology based on these sequences revealed that <i>Burgellaalbofarinacea</i> was closely related to <i>B.flavoparmeliae</i>, and <i>B.fissurata</i> was grouped with <i>B.lutea</i>. The taxon <i>Burgoawumengshanensis</i> was sister to the clade that included <i>B.anomala</i> and <i>B.verzuoliana</i>. The species <i>Sistotremasinense</i> was grouped closely with <i>S.brinkmannii</i> and <i>S.farinaceum</i>. All new taxa can be readily recognized by their macroscopic and anatomical characteristics. The five new species, closely related taxa in the phylogenetic tree, and morphologically similar species are discussed.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"119 ","pages":"67-94"},"PeriodicalIF":2.8,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12238970/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144610049","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":"Unveiling species diversity within early-diverging fungi from China IV: Four new species of <i>Absidia</i> (Cunninghamellaceae, Mucoromycota).","authors":"Zi-Ying Ding, Xin-Yu Ji, Meng-Fei Tao, Yang Jiang, Wen-Xiu Liu, Yi-Xin Wang, Zhe Meng, Xiao-Yong Liu","doi":"10.3897/mycokeys.119.147816","DOIUrl":"10.3897/mycokeys.119.147816","url":null,"abstract":"<p><p>To investigate early-diverging fungi in soil from Yunnan Province, China, four novel species of the genus <i>Absidia</i> were discovered based on a combination of morphological characteristics, molecular evidence, and physiological features. Molecular phylogenetic analyses of SSU-ITS-LSU-Act-TEF1α sequences indicate that <i>Absidiaarrhiza</i> <b>sp. nov.</b>, <i>A.simplex</i> <b>sp. nov.</b>, <i>A.sphaerica</i> <b>sp. nov.</b>, and <i>A.viridis</i> <b>sp. nov.</b> are closely related to <i>A.chinensis</i>, <i>A.panacisoli</i>, <i>A.medulla</i>, and <i>A.varians</i>, respectively. <i>A.arrhiza</i> is named for the sparse presence of rhizoids. <i>A.simplex</i> refers to the simple branching of its sporangiophores. <i>A.sphaerica</i> is characterized by its spherical columellae. <i>A.viridis</i> is distinctive for its light green colony. These four new species are described and illustrated herein, and their phenotypic and genotypic differences from allied species are discussed.</p>","PeriodicalId":48720,"journal":{"name":"Mycokeys","volume":"119 ","pages":"29-46"},"PeriodicalIF":2.8,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12238976/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144610054","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}