中文摘要：

对我国木生齿状真菌齿耳属进行了研究，报道了该属3个中国新记录种：阔纤毛齿耳菌SteccherinumciIiolatum、山生齿耳菌soreophilum和强壮齿耳菌Srobustius。3个种分别采集自黑龙江、四川和吉林省。从形态学及分子系统学方面确定了该属3个种类的分类地位。阔纤毛齿耳菌主要特征为：子实体平伏，奶油色至浅黄色，短齿，边缘呈绒毛状，孢子椭圆形；山生齿耳菌主要特征为：子实体小，平伏至反卷，菌盖表面光滑，子实层体齿状至孔状，骨架囊状体锥形，孢子窄椭圆形；强壮齿耳菌的主要特征为：子实体平伏至反卷，菌齿浅橘红色至暗黄色，孢子宽椭圆形。分子系统学方面，Steccherinum3个种类获得了高的支持率，分属不同分支，显著区别于该属的其他种类。根据采集到的标本对它们进行了详细的描述和绘图，并给出了我国该属已知15种的检索表及每种的简要特征。

英文摘要：

Three hydnaceous wood decaying fungi, Steccherinum ciliolatum, S. oreophilum and S. robustius, were newly founded from China. They were collected from Heilongjiang, Sichuan and Jilin provinces respectively. Both the morphology and phylogenetic analysis of nLSU sequences support these three new records. S. ciliolaturn is characterized by resupinate basidiocarps, cream to buff hymenial surface, margin fimbriate, short aculei that are less than 0.Smm and ellipsoid spores. S. oreophilum is easily recognized by its small, effuse-reflexed basidiocarps with glabrous pileus and irpicoid to poroid hymenial surface, subulate skeletocystidia and narrowly ellipsoid spores. S. robustius is characterized by resupinate to effused-reflexed basidiocarps, reddish-orange to dirty-yellow spines and broadly ellipsoid spores. Phylogenetically, these three new species form well-supported, terminal monophyletic clades, distinct from other sampled Steccherinum species. Illustrated descriptions of these three species are given based on the materials from China. A key to the accepted species of Steccherinum in China along with a synoptic description of each species is provided.