[Washington, DC] (3501 New York Ave., N.E., Washington 20002) : [Floral and Nursery Plants Research Unit, U.S. National Arboretum, U.S. Dept. of Agriculture, Agricultural Research Service], [1999]
"U.S. National Arboretum plant introduction"--Page [1].
"November 1999"--Page [2].
Form
Also available via Internet from USNA web site. Address as of 12/20/03: http://www.usna.usda.gov/Newintro/dreamcat.pdf: current access available via PURL.