Qu Hua, Damm Ulrike, Hou Ya-Jun, Ge Zai-Wei
CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Lanhei Road 132, Kunming 650201, China.
Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
J Fungi (Basel). 2023 Apr 30;9(5):537. doi: 10.3390/jof9050537.
Species of are known as diminutive lepiotaceous fungi with a worldwide distribution. Previous studies revealed that is not monophyletic and preliminary DNA sequence data from recent collections suggested that several new species exist. Based on multi-locus DNA sequence data (the nuc rDNA internal transcribed spacer region ITS1-5.8S-ITS2, ITS; the D1-D2 domains of nuc 28S rDNA, LSU; the most variable region of the second-largest subunit of RNA polymerase II, and a portion of the translation-elongation factor 1-α. ), sect. forms a distinct clade separating from . Therefore, the genus was resurrected and two combinations, and were proposed. With the integration of morphological characteristics, multi-locus phylogeny, and information on geography and habitat, two new species, viz. and , are described and was revealed to be a species complex containing at least three species, viz. , , and . In addition, was re-circumscribed and neo-typified based on recent collections.
[该属物种]被认为是分布于全球的小型鳞伞科真菌。先前的研究表明[该属]并非单系类群，近期采集样本的初步DNA序列数据表明存在几个新物种。基于多位点DNA序列数据（核糖体DNA内部转录间隔区ITS1 - 5.8S - ITS2，即ITS；核糖体28S rDNA的D1 - D2结构域，即LSU；RNA聚合酶II第二大亚基的最大可变区，以及翻译延伸因子1 - α的一部分），[该属的某组]形成了一个与[另一组]分离的独特分支。因此，[该属]被重新启用，并提出了两个新组合，即[组合一]和[组合二]。结合形态特征、多位点系统发育以及地理和栖息地信息，描述了两个新物种，即[新物种一]和[新物种二]，并且揭示[某物种]是一个包含至少三个物种的复合物种，即[物种一]、[物种二]和[物种三]。此外，基于近期采集的样本对[另一物种]进行了重新界定和新指定模式。
