Author Affiliations +
Roderick H. Simmons,1,2,* Gary P. Fleming3
12900-A Business Center Dr., Alexandria, VA 22314
2Department of Botany, National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20013
3P.O. Box 100, Kents Store, VA 23084
*email address: rod.simmons@alexandriava.gov