Image: Sambucus nigra canadensis & cerulea range map 2

Description: Natural distribution map for the North American Sambucus nigra (black & blue elderberry) subspecies: Sambucus nigra subsp. canadensis (green, from Little's S. canadensis map and red from Little's S. mexicana Presl map) Sambucus nigra subsp. cerulea (dark blue, from Little's S. glauca map and light blue from Little's S. velutina map)
Title: Sambucus nigra canadensis & cerulea range map 2
Credit: USGS Geosciences and Environmental Change Science Center: Digital Representations of Tree Species Range Maps from: Elbert L. Little, Jr. (1976), Atlas of United States trees, Vol. 3, minor Western hardwoods: U.S. Department of Agriculture Miscellaneous Publication 1314, 13 p., 290 maps and Elbert L. Little, Jr. (1977), Atlas of United States trees, Vol. 4, minor Eastern hardwoods: U.S. Department of Agriculture Miscellaneous Publication 1342, 17 p., 230 maps.
Author: Elbert L. Little, Jr., of the U.S. Department of Agriculture, Forest Service
Usage Terms: Public domain
License: Public domain
Attribution Required?: No