Taxonomical studies on the bryophytes from Hong Kong I. fissidentaceae

摘要

In Hong Kong, the family Fissidentaceae is represented by the sole genus Fissidens. In this paper, 25 species of Fissidens are reported from Hong Kong, of which 13 species are new records, i.e. F. adelphinus, F. bryoides var. schmidii, F. crenulatus, F. gardneri, F. geppii, F. guang-dongensis, F. hollianus, F. kinabaluensis, F. linearis var. obscurirete, F. minutus, F. polypodioides, F. serratus and F. tosanensis. Occurrence of F. adianthoides and F. taxifolius are doubtful. A key to all accepted species in Hong Kong, brief discussions on the affinities of every species, localities and habitats are also provided.