This book concentrates on the group of plants showing the steepest decline of the British flora over the last 25 years, those plants which grow among the crops.

Its easy-to-use format is designed to enable people to take it into the field and to identify these species whether they are a beginner or an expert.

The text covers the history and includes practical recommendations for managing the places where these plants still occur.

100 plant profiles include information on key features to aid identification, their flowering and germination times and indicates differences with similar species.

Colour distribution maps show where they have been seen in the last 25 years while the accompanying text makes clear the current position.