William Mitten (1819 - 1906) was the premier bryologist of the second half of the 19th century. He described mosses, and to a lesser extent hepatics, from every corner of the globe, but he scarely left his home town of Hurstpierpoint, England. This indices to the species of mosses and lichens described by Millen includes data such as literature citations of original publication, specimen label data, and literature citation for typification. Moss entries are arranged by geography, and a comprehensive index to all binomials concludes the work.
