Ladies'-tresses in Your Pocket: A Guide to the Native Ladies'-tresses Orchids, Spiranthes, of the United States and Canada

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, this pocket guide to ladies’-tresses is the first in a series that will cover all the wild orchids of the United States and Canada.

Brown provides general distributional information, time of flowering, and habitat requirements...