Works Cited

Grimm, William Carey. The Illustrated Book of Trees: The Comprehensive Field Guide to           More Than 250 Trees of Eastern North America. Harrisburg: Stackpole Books,           1957.

Levine, Carol. A Guide to Wildflowers in Winter. New Haven: Yale University Press,           1995.

Niering, William A., and Nancy C. Olmstead. National Audubon Society Field Guide to           North American Wildflowers: Eastern Region. New York: Alfred A. Knopf, 1979.

Sanders, Jack. Hedgemaids and Fairy Candles: The Lives and Lore of North American           Wildflowers. Camden, Maine: Ragged Mountain Press, 1993.