Crosby, M. R. & others - REVISED 1999. REVISED: accepted in a monograph, revision, or descriptive flora since 1963.

Gao Chien(editor) 1994. Fl. Bryophyt. Sin. 1. Sphagnales, Andreaeales, Archidiales, Dicranales. 368 pp.

Iwatsuki, Z. 1991. Cat. Mosses Japan 182 pp.

Noguchi, A. & Z. Iwatsuki 1987. Ill. Moss Fl. Japan 1. pp. 1–242, index.