British mosses and liverworts
Subtitle: an introductory work, with full descriptions and figures of over 200 species, and keys for the identification of all except the very rare species, written and illustrated by E. Vernon Watson.  With a foreword by Paul Richards
Published: 1963
Place of publication: Cambridge, University Press, 1963
Language: eng
Number of pages: 419
Subjects: Liverworts; Mosses
Notes: "Field key to the commonest and most conspicuous species of mosses and liverworts" (26 p.) in pocket.