Watson, E.V., 1981
British Mosses and Liverworts (Ed 3)
An easy-to-use guide to mosses and liverworts.
||Cambridge University Press (CUP)
||0 521 28536 4
||Includes the vast majority of species likely to be found in lowland Britain.
||Line drawings accompany the text, a few half-tone photographs.
||With x15 or x20 hand lens (also useful to examine under a Compound Microscope).
||There is also a 1990 edition.