This user-friendly field guide describes and illustrates the ferns, clubmosses, quillworts and horsetails native to Britain and Ireland, giving comprehensive entries for over 100 species and hybrids. Each entry gives a brief "pen picture" which outlines the key features of each species, supported by clear and informative frond silhouette illustrations. Valuable additional information on distribution, ecology and biology is provided in the form of "Field Notes".