Author: Herman, D.E., et al. 1996. North Dakota tree handbook. USDA NRCS ND State Soil Conservation Committee; NDSU Extension and Western Area Power Administration, Bismarck. Courtesy of ND State Soil Conservation Committee. Provided by USDA NRCS ND State Office. United States, ND. (cropped to a 4:3 ratio by the uploader)Source: commons.wikimedia.org
