1. Frahm, J.-P. Laubmoose. In Frey, W., Frahm, J.-P., Fischer, E. & Lobin, W. Kleine Kryptogamenflora begründet von Helmut Gams. Band 4. Die Moos-und Farnpflanzen Europas. Stuttgart: Gustav Fischer Verlag. 1995
2. Additions and amendments to the mosses of Europe and the Azores
3. Nyholm, E. Illustrated Flora of Nordic Mosses. Fascs 1–4. Lund: Nordic Bryological Society. 1987, 1989, 1993, 1998
4. Distribution of the European and Macaronesian mosses (Bryophytina). Part 2;Duell;Bryologische Beitrage,1985
5. Braithwaite, R. The British Moss Flora. London: L. Reeve & Co. 1887–1905