The subphylum Ustilaginomycotina (Basidiomycota, Fungi) comprises mainly plant pathogenic fungi (smuts). Some of the lineages possess cultivable unicellular stages that are usually classified as yeast or yeast-like species in a largely artificial taxonomic system which is independent from and largely incompatible with that of the smut fungi. Here we performed phylogenetic analyses based on seven genes including three nuclear ribosomal RNA genes and four protein coding genes to address the molecular phylogeny of the ustilaginomycetous yeast species and their filamentous counterparts. Taxonomic revisions were proposed to reflect this phylogeny and to implement the ‘One Fungus = One Name’ principle. The results confirmed that the yeast-containing classes Malasseziomycetes, Moniliellomycetes and Ustilaginomycetes are monophyletic, whereas Exobasidiomycetes in the current sense remains paraphyletic. Four new genera, namely Dirkmeia gen. nov., Kalmanozyma gen. nov., Golubevia gen. nov. and Robbauera gen. nov. are proposed to accommodate Pseudozyma and Tilletiopsis species that are distinct from the other smut taxa and belong to clades that are separate from those containing type species of the hitherto described genera. Accordingly, new orders Golubeviales ord. nov. with Golubeviaceae fam. nov. and Robbauerales ord. nov. with Robbaueraceae fam. nov. are proposed to accommodate the sisterhood of Golubevia gen. nov. and Robbauera gen. nov. with other orders of Exobasidiomycetes. The majority of the remaining anamorphic yeast species are transferred to corresponding teleomorphic genera based on strongly supported phylogenetic affinities, resulting in the proposal of 28 new combinations. The taxonomic status of a few Pseudozyma species remains to be determined because of their uncertain phylogenetic positions. We propose to use the term pro tempore or pro tem. in abbreviation to indicate the single-species lineages that are temporarily maintained.

Ustilaginomycotina亚种（Basidiomycota，真菌）主要包含植物病原性真菌（黑曲病）。一些谱系具有可培养的单细胞阶段，这些阶段通常在很大程度上是人工分类系统中独立于黑曲霉真菌，并且在很大程度上与黑曲霉菌不相容，在通常为人为的分类系统中被分类为酵母或类酵母菌种。在这里，我们基于包括三个核糖核糖体RNA基因和四个蛋白质编码基因在内的七个基因进行了系统发育分析，以解决ustgiginomycetous酵母物种及其丝状对应物的分子系统发育。提出了分类学修订，以反映这种系统发育并实施“一个真菌=一个名字”的原则。结果证实了含酵母类Malasseziomycetes，Moniliellomycetes和黑粉菌纲是单系，而外担菌纲在当前意义上仍然是并系。四个新属，即Dirkmeia gen。十一月，卡尔曼诺兹（Kalmanozyma gen）。十一月，戈卢贝维亚gen。十一月 和Robbauera gen。十一月 有人提议将它们容纳与其他黑穗病分类群不同，属于进化枝的假酶和铁线虫种类，这些进化枝与迄今所述属的类型物种分开。相应地，新订单Golubevial​​es ord。十一月 与豆科家族 十一月 和Robbauerales ord。十一月 与Robbaueraceae家族。十一月 被提议容纳Golubevia gen的姐妹情谊。十一月 和Robbauera gen。十一月 与Exobasidiomycetes的其他命令。基于强烈支持的系统亲和力，大多数剩余的变形酵母菌种被转移到相应的同型酵母属中，从而提出了28种新组合的提议。由于它们的系统发生位置不确定，一些假酶菌种类的分类状态尚待确定。我们建议使用临时或临时一词。 缩写表示暂时维持的单一物种血统。