Anderson, L. E., H. A. Crum & W. R. Buck 1990. List of mosses of North America north of Mexico. Bryologist 93: 448–499.
Chiang & Kuo(1989)
Corley, M. F. V., A. C. Crundwell, R. Düll, M. O. Hill & A. J. E. Smith 1981 . Mosses of Europe and the Azores: an annotated list of species, with synonyms from the recent literature. J. Bryol. 11: 609–689.
Crosby, M. R. & others - REVISED 1999. REVISED: accepted in a monograph, revision, or descriptive flora since 1963.