Moss Flora of Mt. Baihua National Nature Reserve, Beijing, China

By studying nearly 2000 bags of moss specimen collected from 2004-2009, we discovered a total of 270 species (including subspecies and varieties) in 89 genera and 25 families from Mt. Baihua. The dominant families include Pottiaceae, Amblystegiaceae, Bryaceae, Brachytheciaceae, Hypnaceae, Thuidiaceae, Leskeaceae, Mniaceae, Orthotrichaceae, Grimmiaceae and Leskeaceae. The dominant genera include Entodon, Brachythecium, Bryum, Grimmia, Didymodon, Plagiomnium, Tortula, Weissia, and Taxiphyllum. As to the geographical elements, North temperate is the dominant type (accounting for 59.6% of the total), followed by the East Asian type (15.2%), the Chinese Endemic type (10.5%), and the tropical type (4.4%). The index of the species abundance from high to low was Mt. Emei , Mt. Foping, Mt. Changbai, Mt. Lao, Mt. Baihua, Mt. XiaoWutai, Mulanweichang and Mt. Helan. The ordination method was used to analyze the relationship of the moss flora in the 8 areas and the results show that the moss flora of Mt. Baihua has the closest relationship with Mt. XiaoWutai and Mulanweichang.