Acknowledgements
We would like to thank Dr. Matt A. M. Renner, an anonymous reviewer and the managing editor of the Journal of Bryology (Elizabeth Kungu) for constructive comments and improvements to the manuscript. This work was funded by the National Natural Science Foundation of China (nos. 31370238, 31300171), PhD Program Scholarship Fund of ECNU 2009, and the Fundamental Research Funds for the Central Universities.
Taxonomic Additions and Changes: Nil.