靴耳属[Crepidotus (Fr.)]是丝盖伞科(Inocybaceae)仅次于丝盖伞属(Inocybe)的第二大属。全世界超过200种，靴耳个体小、种间关系复杂，是一个鉴定和分类难度较大的类群。中国该属种类丰富，约占世界种类的1/7左右，但中国靴耳一直缺乏系统的研究。本研究将采用传统的形态学分类与现代分子系统学相结合的方法对我国靴耳属及其相近的绒盖伞属(Simocybe)、侧火菇属(Pleuroflammula)、暗金钱菌属(Phaeocollybia)和盔孢菌属(Galerina)进行系统研究。首先在野外采集、调查和查阅国内各大标本馆馆藏标本基础上，获取物种宏观形态特征及生态习性特征，进而进行形态学观察，并广泛选取各属下代表类群或有争议类群利用ITS、nLSU、rpb2、tef1-α等多基因序列分析获得各相近属间和属内种间系统发育树，探讨其系统发育关系，丰富和完善各级系统学框架。

Crepidotus (Fr.)is the second largest genus of Inocybaceae after Inocybe, with more than 200 species estimated worldwide.Due to the lagre number of species and complicated interspecific relationship,it is considered difficult to be identified by most taxonomist.The number of recored species of Crepidotus in China in approximately 1/7th of that in the world,but the genus is still poorly studied over China. We attempt to make systematic studied on Crepidotus and allied genera,Simocybe,Pleuroflammula,Phaeocollybia and Galerina,by using a combined method of morphology and molecular phylogeny.The macrocharacters and ecological traits will be obtained based on a thinking of polyphasic taxonomy and intensive field survey, additional specimens deposited in other herbariums will be also examined. Base morphological studies, the representative taxa for each genus and lower rank will be selected to reconstruct the molecular phylogenetic tree, four loci, ITS, nLSU, rpb2 and tef1-αwere used in the phylogenetic studies.Morphological data, ecological data and molecular data will be analyzed comprehensively: 1) infer the evolutionary relationships among genus and lower rank; 2) improve the infrageneric framework of Crepidotus and allied genera; 3) delimit the infrageneric taxa(subgenus, section, subsection ect.); 4) sort out species recogniton, especially the enigmatic species.