Abstract
Ten species are added to the Fissidens flora of Japan. Fissidens kiguchii and F. takayukii are new to science. Eight species of Fissidens, namely F. crispus, F. excurrentinervis, F. perssonii, F. platyphyllus, F. pseudoceylonensis, F. sublineaefolius, F. taylorii, and F. ventricosus are additions to the moss flora of Japan. Fissidens platyphyllus Broth., previously considered a synonym of F. amoenus Müll. Hal. is recognized as a good species. Fissidens microcladus Thwait. & Mitt. is proposed as a new synonym of F. pallidinervis Mitt. Fissidens boninensis newly found in Ibaraki-ken, Honshu, Japan.
