基于野外调查和标本鉴定，获得了岳西县苔藓植物名录；对该地区苔藓植物进行地理成分划分，并与其他9个相邻地区比较，分析该地区苔藓植物的区系特征。结果表明：岳西县共有苔藓植物67科139属313种，其中，角苔类植物2科2属2种，苔类植物26科37属79种，藓类植物39科100属232种；安徽苔藓植物新记录属3个，新记录种11个；优势科10个，优势属11个。地理成分分析结果表明：岳西县苔藓植物以温带成分为主（占比45.1%），其次是东亚成分（占比38.4%），具有东亚成分占比较高、温带成分高于热带成分的特点。与其他9个相邻地区比较，岳西县苔藓植物与华东区的西天目山苔藓植物区系相似性最高，与华北区的庞泉沟自然保护区区系相似性最低。聚类分析结果显示：岳西县苔藓植物地理成分与华中区的七姊妹山国家级自然保护区相似性最高，与华北区的云台山相似性最低。综上所述，岳西县苔藓植物物种较为丰富，区系相似性结果支持将该地区归属于华东区；同时，岳西县苔藓植物与华东区和华中区苔藓植物有密切联系，具有明显的过渡性，将岳西县作为华东区与华中区的过渡地带具有一定的合理性。

Based on field investigation and specimen identification, a bryophyte list of Yuexi County was obtained; the geographical component of bryophytes in this area was divided, and by comparing with other nine adjacent areas, the floristic characteristics of bryophytes in this area were analyzed. The results show that there are 313 species of bryophytes belonging to 139 genera of 67 families in Yuexi County, including 2 species of hornworts belonging to 2 genera of 2 families, 79 species of liverworts  belonging to 37 genera of 26 families, and 232 species of mosses belonging to 100 genera of 39 families; there are 3 newly recorded genera and 11 newly recorded species of bryophytes in Anhui Province; there are 10 dominant families and 11 dominant genera. The analysis result of geographical components shows that Yuexi county is mainly temperate component (accounting for 45.1%)， followed by East Asian component (accounting for 38.4%), which is characterized by a higher proportion of East Asian component and the temperate component being higher than the tropical component. Compared with other nine adjacent areas, the bryophytes of Yuexi County has the highest flora similarity with that of West Tianmu Mountain in East China, and has the lowest flora similarity with that of Pangquangou Nature Reserve in North China. The result of cluster analysis shows that the geographical component of bryophytes in Yuexi County has the highest similarity with that of Qizimei Mountain National Nature Reserve in Central China, and has the lowest similarity with that of Yuntai Mountain in North China. Taken together, the bryophyte species in Yuexi County are relatively abundant, and the result of floristic similarity supports the attribution of this region to East China; meanwhile, the bryophytes in Yuexi County are closely related to the bryophytes in East China and Central China, and have obvious transition, therefore, it is reasonable to take Yuexi County as the transition zone between East China and Central China.