Previously,more than 400 species of bryophytes in Gansu Province were reported;however,there was no any species of the moss family Sphagnaceae[1-5].In 2006,we collected a specimen of the family Sphag naceae from Baishuijiang National Nature Reserve in Gansu Province.Then three specimens of diferentcommunities were gathered again from this area in 2007.We provide the picture concerning its natural habitat in the paper(Fig.1).