BSBI handbook
Botanical Society of the British Isles
R. V. Lansdown ; illustrated by F. J. Rumsey and R. V. Lansdown ; edited by P. H. Oswald
Botanical Society of the British Isles 2008 BSBI handbook / Botanical Society of the British Isles No. 11
Available at 1 libraries
G.G Graham and A.L. Primavesi ; illustrated by Margaret Gold
Botanical Society of the British Isles 1993 BSBI handbook / Botanical Society of the British Isles No. 7
