Rich, T.C.G. & M.D.B. & Perring, F.H., 1988
Consists of a large number of type-written accounts of various genera or small groups of species which are difficult to identify. The accounts are by a variety of specialists, some previously published elsewhere.
Intended to be used in conjunction with Wiggington & Graham's "Guide to the Identification of some of the more Difficult Vascular Plant Species" (W&G), this work extends the coverage to approiximately 200 taxonomic groups. Some accounts replace those in W&G, some are additional.
The index is a combined index to the present work and W&G.
New edition in prep. (2005)
||Botanical Society of the British Isles (BSBI)
||0 901158 17 8
||A selection of difficult groups from around the UK.
||Many useful line drawings accompany the text.
||With x8 or x10 hand lens (also useful to examine under a Stereo Microscope).