REFERENCES
- Dickson, J. H. (1973). Bryophytes of the Pleistocene. Cambridge University Press, Cambridge and London.
- Dickson, J. H. (1981). Mosses from a Roman well at Abingdon. J. Bryol.11, 559–60.
- Rackham, O. (1976). Trees and Woodland in the British Landscape. Dent, London.
- Smith, A. J. E. (1978). The Moss Flora of Britain and Ireland. Cambridge University Press, Cambridge and London.
- Watson, E. V. (1981). British Mosses and Liverworts. Cambridge University Press, Cambridge.
- ROBIN STEVENSON, 111, Wootton Road, King's Lynn, Norfolk PE30 4DJ.