Panzner wetland 15 acres. "Plants of Pennsylvania" keys it to hamiltonianis (because of leaves over 8 cm) but that doesn't match photos and distributions I see at inat and elsewhere.
Perhaps a dozen 3m trees.
Really stood out from native rubus and dogwoods because of prominent leaves and fruits. Wooded area with scattered red maple and cherry and cottonwood and quaking aspen.
On steps to greenhouse (5 flights). Looks young
Kind of cool if anyone is interested
It's a very big tree and it has the helicopter things.
It has thorn like things on the sticks. the leaves are riley grooved.