What kind of oak tree?

Asked October 23, 2015, 3:59 PM EDT

On a walk through Catonsville, we found this spiky topped acorn and were wondering what kind of oak tree produced this kind of acorn and is this oak tree a native species?

Baltimore County Maryland

1 Response

Based on the photo of the acorn, the tree is most likely Quercus acutissima, Sawtooth oak.
This tree is not native.
mh