revision of Thuidium, Haplocladium, and Claopodium (Musci, Thuidiaceae) in China

This paper is a part of the project "Biodiversity of tropical southeast Asiatic bryoflora" carried out in the Department of Ecology and Systematics of the University of Helsinki and in the Cryptogamic Herbarium of the Botanical Museum of this same university. The aim of the project is to produce basic floristic, taxonomic and ecological knowledge on bryophytes for use by ecologists, foresters and nature conservationists.