MELANIE CHOUKAS-BRADLEY is a writer, naturalist, and teacher in the DC area and the author of three acclaimed books: City of Trees: The Complete Field Guide to the Trees of Washington, D.C., illustrated by Polly Alexander, now in its third edition (2008), An Illustrated Guide to Eastern Woodland Wildflowers and Trees, illustrated by Tina Thieme Brown (2004), and Sugarloaf: The Mountain s History, Geology, and Natural Lore, illustrated by Tina Thieme Brown (2003), all published by the University of Virginia Press. She is also a long-time contributor to The Washington Post and other publications...