Niego Allen Grace T, Thongklang Naritsada, Hyde Kevin D, Raspé Olivier
School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.
Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.
MycoKeys. 2023 Jul 24;98:253-271. doi: 10.3897/mycokeys.98.104517. eCollection 2023.
is the most diverse genus in the group of oudemansielloid/xeruloid taxa (Physalacriaceae). This genus has a worldwide distribution with records mostly from Europe and America. Asian taxa are least represented. In this paper on from Thailand, two novel species are introduced, and a collection affine to is described. Macro and micromorphological characters are described. Maximum likelihood and Bayesian phylogenetic analyses were performed on combined ITS and nrLSU regions to confirm taxonomical placement and infer the phylogenetic affinities of the studied species. sp. nov. is straw-yellow, with medium-sized basidiomata, abundant and diverse in form cheilocystidia, few, narrowly lageniform to fusiform pleurocystidia, and clamp connections at the lower part of the stipe. sp. nov. has mostly utriform pleurocystidia and 2-spored basidia. In the inferred phylogenies, the new species from this study formed distinct clades well supported by bootstrap proportions and posterior probabilities. The studied specimen affine to produced 2-spored basidia whereas published descriptions of other specimens mention 4-spored basidia. Moreover, the genetic distance between ITS sequences of this specimen and that of a specimen from GenBank was 1.30-2.57%. Therefore, the conspecificity of our specimen with is uncertain, and additional specimens are needed to fully confirm its identity.
是奥德曼氏菌属/干朽菌属类群（泡头菌科）中最多样化的属。该属分布于全球，记录大多来自欧洲和美洲。亚洲类群的代表最少。在这篇关于泰国[属名]的论文中，引入了两个新物种，并描述了一个与[属名]相近的[属名]类群的标本。描述了宏观和微观形态特征。对ITS和nrLSU联合区域进行了最大似然法和贝叶斯系统发育分析，以确认分类地位并推断所研究物种的系统发育亲缘关系。[新物种1]新种呈稻草黄色，担子果中等大小，菌褶囊状体丰富且形态多样，侧生囊状体少，窄瓶形至梭形，菌柄下部有锁状联合。[新物种2]新种大多有瓶形侧生囊状体和具2个孢子的担子。在推断的系统发育中，本研究中的新物种形成了由自展支持率和后验概率充分支持的不同分支。与[属名]相近的研究标本产生具2个孢子的担子，而其他标本的已发表描述提到具4个孢子的担子。此外，该标本与来自GenBank的一个[属名]标本的ITS序列之间的遗传距离为1.30 - 2.57%。因此，我们的标本与[属名]是否同种尚不确定，需要更多标本才能完全确认其身份。
