Keywords: Sambucus nigra canadensis & cerulea range map 2.png en 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 1976 1777 http //esp cr usgs gov/data/little/ 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 Elbert L Little Jr of the U S Department of Agriculture Forest Service PD-USGov Sambucus nigra range maps Uploaded with UploadWizard Sambucus canadensis range maps Sambucus cerulea range maps |