中文摘要：

通过对贵州省大方县老鹰岩地区采集的545份标本进行整理和鉴定，得出该地区苔藓植物有33科64属189种。其中优势科有白发藓科Leucobryaceae、真藓科Bryaceae、羽藓科Thuidiaceae等，优势属有小曲尾藓属Di-cranella、曲柄藓属Campylopus、真藓属Bryum、凤尾藓属Fissidens、青藓属Brachythecium等。而紫萼藓科Grimmi-aceae紫萼藓属Grimmia中的高山紫萼藓Grimmia montana Bruch.＆Schimp.为贵州的新纪录种。在区系成分分析中，东亚成分占主导地位，总共45种，占所有种数（不包括世界广布）的33.09%。

英文摘要：

545 specimens of moss were collected from Eagle Rock area, DaFang, Guizhou Province for identification. The result showed that 189 species that belonged to 64 genera, 33 families were identified. The dominant families were Leucobry-aceae, Pottiaceae, Bryaceae, Brachytheciaceae, Hypnaceae, and Thuidiaceae. The dominant genera were Dicranella, Campylopus, Bryum, Fissidens, Barbula, and Brachythecium. Grimmia montana Bruch.＆Schimp, which belongs to Grim-mia in Grimmiaceae, is a new record species in Guizhou. In the floristic composition analysis, the predominant element was East Asia element, with a total of 45 species, a proportion of 33.09% in total species （ excluding Cosmopolitan） .