中文摘要：

摘要；选择粗疣藓属及相关属样本作为内群，油藓属样本作为外群，选取核基因ITS片段以及叶绿体基因trnL厂F和rps4片段进行PCR扩增、测序，运用贝叶斯推论（BI）、最大似然法（ML）和最大简约法（MP）构建分子系统发育树，以明确粗疣藓属的分类学地位。结果表明：（1）用于分子系统分析的基因序列共有1744个位点，其中747个位点属于核基因片段，997个位点属于叶绿体基因片段。（2）3种系统发育树拓扑结构基本一致，都显示粗疣藓属与毛锦藓科成员聚成一支，支持粗疣藓属应隶属于毛锦藓科的观点。（3）小粗疣藓和粗疣藓的种间界限模糊。（4）小鼠尾藓属的3个种与棉藓属成员聚成一支，支持将其归入棉藓科的观点。

英文摘要：

To clarify the obscured taxonomic status of Fauriella Besch. ,we carried out phylogenetic analyses inferred from cp trnL-F,rps4 and nr ITS,with increased samples of Fauriella and related genera,and Hookeria Sin. selected as outgroup. The phylogenetic trees were conducted by Bayesian analyses, ML analyses, and MP analyses. The results were as follows ： （1） The final alignment used for phylogenetic analyses contained 1 744 positions,including 747 nuclear region positions and 997 plastid positions~ （2）There was no significant topological conflict among the consensus trees,which showed that Fauriella clustered with the members of Pylaisiadelphaceae and indicated that Fauriella should be put into Pylaisiadelphaceael （3）The relationship between Fauriella tenerrima Broth. and Fauriella tenuis （Mitt.） Cardot is obscured; （4） 3 species of Myurella Brueh Schimp. are clustered with the members of Plagiotheciurn Bruch Schimp. , which is congruent with the point that Myure!la should be transferred to Plagiotheciaceae.