The Excursion Flora of the British Isles is a clear and informative guide written for the student and amateur botanist. It provides accurate and concise descriptions of all the plants commonly found in the British Isles. The easy-to-follow keys cover almost all the native, many naturalized and a few casual species, and show at a glance where more detailed descriptions are provided for species of particular interest. The highly successful flora provides an indispensable reference text for both the field botanist and interested layman.