Northeast Ferns is the first modern, comprehensive field guide to the true ferns and fern relatives of New England and the northeastern United States, including the states of Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, and Vermont. Included are keys, descriptions and illustrations for over 130 of the region's species of ferns and fern relatives: True Ferns in 19 families and 36 genera, including 'typical' ferns such as members of the Wood Fern, Sensitive Fern, Maidenhair Fern, Cliff Fern and Spleenwort Families, plus families now considered part of the true fern group – the Horsetail (Equisetum) and Adder's-tongue Families (moonworts, grapeferns). Fern Relatives in 3 families and 8 genera, including members of the Clubmoss, Quillwort and Spike-moss Families.