Description: English: Red alder and sword fern near Drift Creek in the Oregon Coast Range. Date: 29 December 2005 (original upload date). Source: Own work. Author: Nickpdx (talk).
Description: English: Range map of Alnus rubra. Date: 1999. Source: Digital representation of "Atlas of United States Trees" by Elbert L. Little, Jr. [1]. Author: U.S. Geological Survey.
Description: English: Plate 59. Alnus rubra Bong. (Red alder): Characteristic alder swamp on coast, trees 9 inches to 2 feet in diameter and 50 to 75 feet high. Redwood Canon, south of Mount Tamalpais, Marin County. Date: 1910. Source: Jepson, W. L. The Silva of California. Memoirs of the University of California, Volume 2, 1910. Author: Gustav Eisen and G. A. Mitchell.
Description: English: Red alder (Alnus rubra) flat in Olympic National Park. Photo from the US National Park Service. Public domain. Date:. Source: NPS. Author: NPS.