Caucasian Wingnut
Scientific Name: Pterocarya fraxinifolia
Family: Juglandaceae

Wingnuts are deciduous trees in the walnut family and they have compound leaves similar to those on a walnut. Wingnuts get their name from the long chains of small, winged nutlets that hang from the branches. These chains sometimes stay on the tree into the winter. The Caucasian Wingnut can reach nearly 100 feet in its native habitat from the Caucasus Mountains to Iran. It is a rare tree in Portland.

Maps: 27