中文摘要：

本文对采自贵州省思南县四野屯自然保护区约500份苔藓植物标本的整理与鉴定,得出该地区的的苔藓植物有55科106属254种.在区系成分分析中,东亚成分占主导地位,共75种,占总种数（不包括世界广布）的34.09％.

英文摘要：

500 specimens of mosses from Siyetun Nature Reserve at Sinan in Guizhou Province were collected and identified.The result showed that a total of 254 species （including subspecies,variation） were obtained,which belong to 106 genera in 55 families.By the floristic composition analysis,among the 254 species of bryophytes,E.Asia element was dominant,including 75 species and accounting for 34.09％ of total species （except those world-wide distributed）.