Quercus macrocarpa - burr or mossy cup oak
More than 70 oak species grow naturally in North America, the most widespread being the large majestic burr oak, also called mossy cup oak. The edge of the cup holding the large acorn resembles the burrs of the burdock, hence the common name.
On good sites the burr oak can grow to 40 metres but on less fertile soil remains small and twisted. Corky wings often develop on the branches, which emphasize the tree’s generally bare and spiky appearance.