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A comprehensive, richly illustrated photographic field guide to the ferns and lycophytes of the eastern United States and Canada. This is a comprehensive photographic field guide to the ferns, spikemosses, clubmosses, and quillworts of eastern North America. Accessible yet scientifically accurate, the book will appeal to beginners and experts alike and enhance the field experience of any user.. Keys, range maps, detailed color photographs, and facing-page species descriptions aid exploration and allow reliable identification of all 305 species found in the area covered by the book - the United States east of the Mississippi and contiguous Canada, except for extreme northern and northeastern Canada. An introduction provides an easy-to-understand overview of identifying characteristics, life cycles, and evolutionary history.