A very strange maple with leaves overall A. saccharum shaped but densely pubescent on abaxial surfaces and petioles. Doesn't resemble the black maples (A. nigrum) I'm familiar with from rich bottomlands in the Carolinian zone, which have leaves pubescent on both surfaces with shallow sinuses and blunt lobes.

Growing in shallow soil over limestone bedrock in a degraded treed alvar-like community.

Massassauga Point Conservation Area, Prince Edward County, Ontario, Canada.