During a study of indoor fungi, 145 isolates belonging to Chaetomiaceae were cultured from air, swab and dust samples from 19 countries. Based on the phylogenetic analyses of DNA-directed RNA polymerase II second largest subunit (rpb2), β-tubulin (tub2), ITS and 28S large subunit (LSU) nrDNA sequences, together with morphological comparisons with related genera and species, 30 indoor taxa are recognised, of which 22 represent known species, seven are described as new, and one remains to be identified to species level. In our collection, 69 % of the indoor isolates with six species cluster with members of the Chaetomium globosum species complex, representing Chaetomium sensu stricto. The other indoor species fall into nine lineages that are separated from each other with several known chaetomiaceous genera occurring among them. No generic names are available for five of those lineages, and the following new genera are introduced here: Amesia with three indoor species, Arcopilus with one indoor species, Collariella with four indoor species, Dichotomopilus with seven indoor species and Ovatospora with two indoor species. The generic concept of Botryotrichum is expanded to include Emilmuelleria and the chaetomium-like species B. muromum (= Ch. murorum) in which two indoor species are included. The generic concept of Subramaniula is expanded to include several chaetomium-like taxa as well as one indoor species. Humicola is recognised as a distinct genus including two indoor taxa. According to this study, Ch. globosum is the most abundant Chaetomiaceae indoor species (74/145), followed by Ch. cochliodes (17/145), Ch. elatum (6/145) and B. piluliferum (5/145). The morphological diversity of indoor Chaetomiaceae as well as the morphological characteristics of the new genera are described and illustrated. This taxonomic study redefines the generic concept of Chaetomium and provides new insight into the phylogenetic relationships among different genera within Chaetomiaceae.

在一项室内真菌研究中，从19个国家的空气，拭子和粉尘样本中培养了145种属于油菊科的菌株。基于DNA定向RNA聚合酶II的第二大亚基（rpb2），β-​​微管蛋白（tub2），ITS和28S大亚基（rSU）nrDNA序列的系统发育分析，以及与相关属和物种的形态学比较，30个室内分类群被识别出，其中22个代表已知物种，七个被描述为新物种，还有一个尚待确定物种级别。在我们的收藏中，有6种物种的室内分离株中有69个簇聚在一起，并具有Chaetomium globosum物种复合体的成员，代表了Chaetomium sensu stricto。其他室内物种分为九个谱系，彼此分隔开，其中有几个已知的甲壳动物属。没有通用名是为那些谱系五，和下面的新属这里介绍：Amesia有三个室内种，Arcopilus一个室内种，Collariella有四个室内种，Dichotomopilus七个室内物种和Ovatospora有两个室内物种。的一般概念Botryotrichum扩展到包括Emilmuelleria和毛壳状物质B. muromum（= -通道murorum），其中包括两个室内物种。Subramaniula的一般概念已扩展到包括几个像拟杆菌属的类群和一个室内物种。腐质霉被认为是独特的属，包括两个室内分类群。根据这项研究，Ch。globosum是Chaetomiaceae室内物种最丰富（74/145），其次是Ch。耳蜗（17/145），Ch。elatum（145分之6）和B. piluliferum（145分之5）。对室内桔梗科的形态多样性以及该新属的形态特征进行了描述和说明。这项分类学研究重新定义了Chaetomium的通用概念并为菊科内不同属间的系统发育关系提供了新的见识。