AIDGAP Fern identification guide
The AIDGAP Fern Guide covers the 59 species of fern, 6 clubmosses, 3 quillworts and 8 horsetails found in the British Isles.
Designed for use with living adult specimens in the field, the guide starts with an introductory key to the main groups. Further illustrated keys take identification to species level. Commonly found hybrids are also included.