Mosses, Leratia, Lewinskya, Nyholmiella, Orthotrichum, China

In total, the traditionally conceived genus Orthotrichum s.l., it currently consists of 45 species in China, including one species of the genus Leratia, 15 of the genus Lewinskya, one of Nyholmiella and 28 of Orthotrichum s.str. This study provides new data on the distribution of species based on a critical revision of material from Europaean herbarium, including PC, B, H, W, C and LE, and from four largest Chinese herbaria, namely KUN, PE, IFP (formerly IFSBH) and XJU and field survey of 7 Chinese provinces. One species of the genus Lewinskya and two of Orthotrichum were recently recorded for the first time in China and moreover 20 species are newly reported by authors from various provinces in China, including Gansu, Heilongjiang, Hubei, Hunan, Inner Mongolia, Jiangxi, Jilin, Qinghai, Shaanxi, Shanxi, Shandong, Sichuan, Xinjiang, Xizang, Yunnan and Zhejiang. Detail distribution and ecological requirements of the species are discussed.