1. Birch of western United States resembling the paper birch but having brownish bark
   "swamp birch grows abundantly along mountain streams";
   - water birch, mountain birch, Western paper birch, Western birch, Betula fontinalis

Derived forms: swamp birches

Type of: birch, birch tree

Part of: Betula, genus Betula

Encyclopedia: Swamp birch