[Broadleaf Trees and Shrubs of the Columbia River Gorge of Oregon and Washington]

The leaves and 1-seeded samaras of the tree-of-heaven as seen at the state park at the mouth of the Deschutes River in the eastern Columbia River Gorge.........July 17, 2009.

Dorsal (left) and ventral (right) views of the leaf of tree of heaven.

A close-up of the clusters of 1-seeded samaras of the tree-of-heaven as seen along the Deschutes River at Colorado Rapids, Deschutes River State Recreation Area.........November 12, 2017.