Leaf: Simple, alternate on stem, 4" to 6" in length; ovate, sharp-pointed, base not symmetrical, double-toothed on edges; thick, dark green, and rough on both sides; turns yellow in autumn. Winter buds covered by brown, silky hairs.
For more information see
http://www.dnr.state.mn.us/trees_shrubs/deciduous/redelm.html.