T.C.G. & Jermy, A.C. 1998. Plant Crib 1998. Botanical Society
of the British Isles, London.
Plant Crib is intended to help experienced botanists identify
some of the more difficult groups of plants in Britain & Ireland.
It does not cover the critical taxa Rubus, Taraxacum and Hieracium
in any detail, but it does include many species and hybrids more
fully than you are likely to encounter elsewhere.
part of a process to update the Plant Crib, Tim Rich has digitised
the original book and made it available here as a series of pdf
downloads. It is intended that these accounts will be extended
and improved over the next few years. You are welcome to download
these accounts for personal use, but please note that they are
still copyright and may not be printed and sold or used for commercial
purposes without the permission of the authors." from
the BSBI Web Site.