Common birch of the eastern United States having spicy brown bark yielding a volatile oil and hard dark wood used for furniture.

synonyms: Betula lenta, cherry birch, sweet birch.

Polish: brzoza cukrowa, brzoza wiśniowa

Birch of swamps and river bottoms throughout the eastern United States having reddish-brown bark.

synonyms: Betula nigra, red birch, river birch.

Polish: brzoza nadrzeczna, brzoza czarna