Bur Oak Guide: Grass-pinks and Companion Orchids in Your Pocket : A Guide to the Native Calopogon, Bletia, Arethusa, Pogonia, Cleistes, Eulophia, Pteroglossaspis, and Gymnadeniopsis Species of the Continental United States and Canada (Sheet map, folded)

Native orchids are increasingly threatened by pressure from population growth and development but, nonetheless, still present a welcome surprise to observant hikers in every state and province. Compiled and illustrated by long-time orchid specialist Paul Martin Brown, these pocket guides to grass-pinks and their companions form part of a series that will cover all the wild orchids of the continental United States and Canada.
      Brown provides general distributional information, time of flowering, and habitat requirements for each species as well as a complete list of hybrids and the many different growth and color forms that can make identifying orchids so intriguing. For the grass-pinks and companions he includes information on 16 species, 2 additional varieties, and 7 hybrids.
      Grass-pinks, with their showy pink to white flowers, are some of the most conspicuous wild orchids encountered in the prairies, bogs, and open wetlands of eastern North America. Most of these species are easy to identify based upon their general appearance, range, and time of flowering. Answering three simple questions—when, where, and how does it grow?—and comparing the living plant with the striking photos in the backpack-friendly laminated guide should enable both professional and amateur naturalists to achieve the satisfaction of identifying a specific orchid.