Back in print at last in a third edition, the classic Forest and Shade Trees of Iowa now has a wealth of full-color photographs and updated, reorganized information that will please both new and returning readers.   Part 1 of this guide focuses on identification, with user-friendly keys to both summer and winter trees and illustrated descriptions of more than one hundred common species. The trees are arranged according to similarities in foliage; each entry includes a large scan of a leafy branch along with two or three smaller photos of buds, flowers, fruits, and winter twigs. The text contains a description of the species, its geographical distribution, and notes on how to distinguish it from similar species. Part 2 is divided into conifers and flowering trees and includes all trees native to Iowa, trees that are widely planted, invasive species, some less commonly planted trees, and tall native shrubs that might be mistaken for trees. The authors provide information about the natural history of individual trees, their ecological requirements, pests and diseases that affect them, and their usefulness for such different purposes as windbreaks, landscaping, wildlife plantings, fuel, lumber, and food. Following these two main parts, three shorter sections describe the planting and care of trees, Iowa's forest communities, and good places to see trees in the state; a glossary and a bibliography are also included.   A complete guide to Iowa's trees, both native and introduced, full of hundreds of color photos, this new edition of Forest and Shade Trees of Iowa will be immensely useful to arborists, foresters, horticulturists, landscape architects, gardeners, and all Iowans and midwesterners who appreciate the beauty and value of trees and want to learn more about them.