Native Orchids of the United States and Canada is a field guide to the more than 200 native orchids found across the United States and Canada. From rarer species to orchids that even the casual hiker might stumble across, this comprehensive field guide includes: Detailed species accounts with distribution maps, conservation status, and ecological information Visual keys for readers new to orchid taxonomy, as well as traditional dichotomous keys Vivid photographs and helpful identification tools make Native Orchids of the United States and Canada the definitive resource for enthusiasts of all experience levels to discover this diverse, far-reaching, and colorful family of flowering plants. At last, a beautifully illustrated book about orchids in North America. This is a must-have for any native-orchid enthusiast, and a great companion to the Go Orchids website. -- John Alexander, Canadian Orchid Congress and Southern Ontario Orchid Society This highly accessible and up-to-date field guide is essential for any walk in the woods, prairie, or woodland. A round of applause for such a terrific addition to the plant lover's library. Don't leave home without it! -- Peggy Fiedler, Executive Director, The Red List Project This highly accessible and up-to-date field guide is essential for any walk in the woods, prairie, or woodland. A round of applause for such a terrific addition to the plant lover's library. Don't leave home without it! -- Peggy Fiedler, Executive Director, the Red List Project Hal Horwitz (1940–2015) was a pediatric dentist and an avid photographer specializing in native orchids. Hal and his wife, Helen, were early supporters of the Native Orchid Conference and the North American Orchid Conservation Center (NAOCC). Dennis F. Whigham is Distinguished Scientist Emeritus at the Smithsonian Environmental Research Center (SERC) and Founding Director of the NAOCC, which was established as a program of the Smithsonian Institution based at SERC. Jay O'Neill retired after a forty-year career at SERC. He was instrumental in developing and maintaining the NAOCC and Go Orchids websites and continues to promote NAOCC's educational initiatives. Julianne McGuinness is a contractor responsible for many aspects of NAOCC operations, including its partnerships, project coordination, fundraising, newsletter, and websites.