United States, Illinois, Du Page, The Morton Arboretum Heath collection, Q-58/75-58. Collected for the National Cancer Institute - 1996 to 1997. Vouchers for plant samples for Antiads-Anticanceer Testing.
On hillside. 12 meter tall, 3.5 decimeter dbh, accession # 69928 from Conyers B. Fleu Jr., Germantown, PA Sample part: LF TW ST BK. NCI Code 0GDK0303-M-305-O.