The forests are being taken over by exotic plant species like the well-known ailanthus (or tree of heaven), the Japanese honeysuckle, the bittersweet, the Norway maple and the Amur cork tree.

Native to eastern Asia; northern China, Manchuria, Korea, Ussuri, Amur, and Japan, the Amur cork tree is considered invasive in many parts of North America.

Amur cork tree fruit oil is a pressed oil extracted from the fruit of Phellodendron amurense, the Amur Cork Tree.

A small twig was sawed off the tree for closer inspection, but the general sense was that the group had come upon some form of the species Phellodendron, possibly an Amur cork tree known to grow in New England.

Amur Cork Bark, Amur Cork Tree, Amur Corktree, Corktree, Cortex Phellodendri, Huang Bai, Huang Bo, Phellodendri Cortex, Phellodendron amurense.