AuthorClapham, A.R., Tutin, T.G. & Warburg, E.F.
Year1962
TitleFlora of the British Isles
TypeBook/Report
How CompleteAll native species and hybrids known at the time, plus a good selection of the commoner aliens and garden escapes.
SourceSecond Edition edition, 1269pp, Cambridge University Press
Illustrationsa few line drawings in the text
Review (by Malcolm Storey)

With over 1,000 thin pages of small type, "CTW" was, for thirty years, the standard flora for the higher plant botanist in Britain.

The keys work well and the descriptions are sufficently detailed to enable confident identification.

The species entries are a mine of information, giving flowering (and often fruiting) period (noticeably inaccurate in these days of climate change), chromosome counts (showing, for example, that Lady’s Smock - Cardamine pratensis - is actually a neglected complex of microspecies), pollenators (several Helleborines - Epipactis - are wasp-pollenated) status, no of vice counties, distribution in Britain and abroad.

Examine in the Hand ( with x8 or x10 hand lens is also useful)

Notes & PurposeStatusTaxonEnglishClassification
For identificationSupersededTRACHEOPHYTAvascular plantsPlantae
For identificationSupersededPTERIDOPHYTAferns and alliesPlantae
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