- A North American birch with shaggy reddish-brown or orange bark.
More example sentences
- Betula nigra
- The floodplains and islands of the Wisconsin and Mississippi rivers were forested with low-lying cottonwood and willow, grading into river birch and swamp white oak, with silver maple, American elm, and ash invading higher stands.
- The native river birch is a clean, graceful tree that provides bright/filtered shade.
- The Sidwells enlarged the patio and covered it with an arbor; created perimeter beds of mixed shrubs and planted a vegetable garden as well as a graceful, native river birch and an ‘Oklahoma’ redbud.