Populus deltoides var. occidentalis Rydb.

Flora of western North Dakota, U. S. A.
Billings County. Near Medora and Theodore Roosevelt
National Memorial Park, in the badlands. 2,500 ft.
Wooded bottomland on the Little Missouri River.
June 7 - 10, 1967.
C. L. Porter & Marjorie W. Porter No. 10,366
NEW YORK BOTANICAL GARDEN
02470092
Populus sargentii Dode
02470092