In a complete revision and expansion of his previous work on the subject, Paul Martin Brown incorporates 10 years of additional research and fieldwork in this expanded guide to the wild orchids in the entire Northeast. Now including all of Pennsylvania and New Jersey (a state never before covered in its entirety), the guide spans the region from the southern Pennsylvania border to the northern tip of Maine, and includes features on areas of special interest: the Northwoods (bog, fen, and boreal forest), the Connecticut River Valley, central New York State, metropolitan Boston, Cape Cod and eastern Long Island, the New Jersey pinelands and Cape May, and the Alleghenies of Pennsylvania. Enhancing the text are 300+ photos illustrating the orchids and color forms and hybrids (several previously unpublished), 79 color distribution maps, along with regional orchid hunting maps, additional drawings, and original paintings by Stan Folsom. The guide covers 79 species and varieties, 88 forms, and 15 hybrids and provides full treatment of synonymy and species pairs. More experienced enthusiasts will appreciate this treatment of potentially confusing specimens and will find that the literature review provides a valuable resource to anyone interested in orchid taxonomy. The guide also provides quick access to locally useful information via state-by-state species checklists, species rarity and conservation information, regional flowering time charts, a hunting guide that divides the Northeast into regional habitats and hot spots, and a special tribute to the late Philip E. Keenan. Combining the attractive and useful tools of a field guide with additional features for serious researchers, writers, and taxonomists, this is the ideal companion for casual hikers and dedicated orchid hunters alike--a handy, authoritative guide for the northeastern states.