中文摘要：

通过对贵州省月亮山自然保护区采集的约1000份标本的整理和鉴定，得出该地区苔藓植物有69科147属374种。对374种苔藓植物进行物种组成和区系成分的分析，得出优势科16个，优势属6个，区系划分为15种类型，其中中国—日本成分所占比例最大，并且区系成分具有由温带向热带过渡的特点。

英文摘要：

Yueliang Mountain Nature Reserve is located at the junction of four counties：Chongjiang County, Rongjiang County, Sandu County and Libo County, at the longitude E 108°14′-109°12′, and latitude N 25°19′-26°03′, with a total area of 24800 hm2 . The flora of bryophytes is investigated for the first time through the study of 1000 collected specimens. A total of 374 species of bryophytes are identified, which be-long to 147 genera in 69 families. The species and floristic composition for the 374 species were analysed, with 16 families and six genera dominating the flora. The flora can be divided into 15 floristic elements, dom-inated by the Sino—Japan（ SJ） element. The bryophytes flora in Yueliang Mountain Nature Reserve have the characteristics of transition from temperate to tropical elements.