Book excerpt: A vast swath of prairie situated between the Missouri River and the Rocky Mountains, the North American Great Plains extend across ten states in the United States and three provinces in Canada. The dominant vegetation is grass—both the native species that have long thrived here and the cultivated crops such as corn, wheat, and sorghum that are the result of human agricultural activity. This comprehensive guide, written by three grass specialists, is an invaluable tool for identification of the approximately 450 species of grasses that occur on the Great Plains. In each description, the authors cover distribution, habitat, forage value, and toxicity and include a detailed black-and-white illustration of the grass as well as a range map. Intended as a reference for landowners, rangeland specialists, students, state and federal agency professionals, and nongovernment conservation organizations, Grasses of the Great Plains will serve a wide audience of users involved in and dedicated to grassland management.