taxonID	type	description	language	source
D226EE3E473C59388A9D6604C9B929FB.taxon	etymology	Etymology. Referring to the name of the type genus.	en	Liu, Ling-Ling, Gu, Xiao-Feng, Gou, Jiu-Lan, Liu, Zuo-Yi, Chen, Ya-Ya, Wu, Jia-Hai, Liu, Yong-Xiang (2025): Morphological and phylogenetic analyses reveal Xenosporidesmiaceae fam. nov, with seven Xenosporidesmium species. MycoKeys 123: 171-188, DOI: 10.3897/mycokeys.123.164006
D226EE3E473C59388A9D6604C9B929FB.taxon	description	Description. Colonies on nature substrate effuse, hairy, scattered or in small groups. Conidiophores macronematous, mononematous, solitary, cylindrical, straight or slightly flexuous, dark brown, septate. Conidiogenous cells holoblastic, monoblastic, integrated, terminal, cylindrical, smooth, pale to dark brown. Conidia acrogenous, solitary, obclavate, pale brown to olivaceous, paler at the apex, tapering gradually towards the apex, smooth, straight or curved, distoseptate, with a mucilaginous sheath or apical appendage.	en	Liu, Ling-Ling, Gu, Xiao-Feng, Gou, Jiu-Lan, Liu, Zuo-Yi, Chen, Ya-Ya, Wu, Jia-Hai, Liu, Yong-Xiang (2025): Morphological and phylogenetic analyses reveal Xenosporidesmiaceae fam. nov, with seven Xenosporidesmium species. MycoKeys 123: 171-188, DOI: 10.3897/mycokeys.123.164006
D226EE3E473C59388A9D6604C9B929FB.taxon	type_taxon	Type genus. Xenosporidesmium L. L. Liu & Z. Y. Liu, gen. nov.	en	Liu, Ling-Ling, Gu, Xiao-Feng, Gou, Jiu-Lan, Liu, Zuo-Yi, Chen, Ya-Ya, Wu, Jia-Hai, Liu, Yong-Xiang (2025): Morphological and phylogenetic analyses reveal Xenosporidesmiaceae fam. nov, with seven Xenosporidesmium species. MycoKeys 123: 171-188, DOI: 10.3897/mycokeys.123.164006
F19475B53072523799D9BB39FEAA61C6.taxon	description	Fig. 2	en	Liu, Ling-Ling, Gu, Xiao-Feng, Gou, Jiu-Lan, Liu, Zuo-Yi, Chen, Ya-Ya, Wu, Jia-Hai, Liu, Yong-Xiang (2025): Morphological and phylogenetic analyses reveal Xenosporidesmiaceae fam. nov, with seven Xenosporidesmium species. MycoKeys 123: 171-188, DOI: 10.3897/mycokeys.123.164006
F19475B53072523799D9BB39FEAA61C6.taxon	etymology	Etymology. The epithet “ caohaiense ” refers to the type location, Caohai National Nature Reserve.	en	Liu, Ling-Ling, Gu, Xiao-Feng, Gou, Jiu-Lan, Liu, Zuo-Yi, Chen, Ya-Ya, Wu, Jia-Hai, Liu, Yong-Xiang (2025): Morphological and phylogenetic analyses reveal Xenosporidesmiaceae fam. nov, with seven Xenosporidesmium species. MycoKeys 123: 171-188, DOI: 10.3897/mycokeys.123.164006
F19475B53072523799D9BB39FEAA61C6.taxon	description	Description. Saprobic on decaying submerged wood in freshwater habitats. Sexual morph: Unknown. Asexual morph: Hyphomycetous. Colonies on natural substrate effuse, hairy, dark brown, scattered or in small groups, velvety. Mycelium mostly immersed, composed of pale to brown, branched, septate, smooth hyphae. Conidiophores macronematous, mononematous, erect, solitary, straight or slightly flexuous, unbranched, cylindrical, dark brown, 1 – 3 - septate, 25.5 – 50 × 3.5 – 6 μm (x ̄ = 37 × 4.5 μm, n = 20). Conidiogenous cells monoblastic, integrated, terminal, cylindrical or lageniform, pale brown, (6 –) 9 – 14.5 × 2.5 – 5.5 μm (x ̄ = 11 × 4 μm, n = 20). Conidia 35 – 51 × 7.5 – 11 μm (x ̄ = 42 × 9 μm, n = 20), acrogenous, solitary, obclavate, pale brown, straight or slightly flexuous, apically rostrate, hyaline to pale brown, often with a mucilaginous sheath, truncate at the base, 8 – 13 - distoseptate, guttulate, smooth-walled, thin-walled.	en	Liu, Ling-Ling, Gu, Xiao-Feng, Gou, Jiu-Lan, Liu, Zuo-Yi, Chen, Ya-Ya, Wu, Jia-Hai, Liu, Yong-Xiang (2025): Morphological and phylogenetic analyses reveal Xenosporidesmiaceae fam. nov, with seven Xenosporidesmium species. MycoKeys 123: 171-188, DOI: 10.3897/mycokeys.123.164006
F19475B53072523799D9BB39FEAA61C6.taxon	description	Culture characteristics. Conidia germinating on PDA medium within 12 h. Germ tubes produced from the apex. Colonies on PDA medium reaching 20 mm diam. after 3 weeks at 25 ° C, circular, flat, centrally umbonate, with velvety, white to pale yellow mycelium on the surface; in reverse pale yellow with entire margin.	en	Liu, Ling-Ling, Gu, Xiao-Feng, Gou, Jiu-Lan, Liu, Zuo-Yi, Chen, Ya-Ya, Wu, Jia-Hai, Liu, Yong-Xiang (2025): Morphological and phylogenetic analyses reveal Xenosporidesmiaceae fam. nov, with seven Xenosporidesmium species. MycoKeys 123: 171-188, DOI: 10.3897/mycokeys.123.164006
2AA56D50D3C956D3AA13AF0D12398DCD.taxon	etymology	Etymology. “ Xeno- ” means different, “ Xenosporidesmium ” reflects that, although this fungus resembles Sporidesmium in morphology, it is genetically distinct and phylogenetically separate.	en	Liu, Ling-Ling, Gu, Xiao-Feng, Gou, Jiu-Lan, Liu, Zuo-Yi, Chen, Ya-Ya, Wu, Jia-Hai, Liu, Yong-Xiang (2025): Morphological and phylogenetic analyses reveal Xenosporidesmiaceae fam. nov, with seven Xenosporidesmium species. MycoKeys 123: 171-188, DOI: 10.3897/mycokeys.123.164006
2AA56D50D3C956D3AA13AF0D12398DCD.taxon	type_taxon	Type species. Xenosporidesmium aquaticivaginatum (Jiang Yang & K. D. Hyde) L. L. Liu & Z. Y. Liu, comb. nov.	en	Liu, Ling-Ling, Gu, Xiao-Feng, Gou, Jiu-Lan, Liu, Zuo-Yi, Chen, Ya-Ya, Wu, Jia-Hai, Liu, Yong-Xiang (2025): Morphological and phylogenetic analyses reveal Xenosporidesmiaceae fam. nov, with seven Xenosporidesmium species. MycoKeys 123: 171-188, DOI: 10.3897/mycokeys.123.164006
2AA56D50D3C956D3AA13AF0D12398DCD.taxon	description	Description. Saprobic on dead wood. Sexual morph: Undetermined. Asexual morph: Colonies on nature substrate effuse, hairy, scattered or in small groups. Conidiophores macronematous, mononematous, solitary, cylindrical, straight or slightly flexuous, dark brown, septate. Conidiogenous cells holoblastic, monoblastic, integrated, terminal, determinate or with one percurrent proliferation, cylindrical, smooth, pale to dark brown. Conidia acrogenous, solitary, obclavate, pale brown to olivaceous, paler at the apex, tapering gradually towards the apex, smooth, straight or curved, distoseptate, with a mucilaginous sheath or apical appendage.	en	Liu, Ling-Ling, Gu, Xiao-Feng, Gou, Jiu-Lan, Liu, Zuo-Yi, Chen, Ya-Ya, Wu, Jia-Hai, Liu, Yong-Xiang (2025): Morphological and phylogenetic analyses reveal Xenosporidesmiaceae fam. nov, with seven Xenosporidesmium species. MycoKeys 123: 171-188, DOI: 10.3897/mycokeys.123.164006
