Tree-of-heaven: Ailanthus altissima (Synonym: Ailanthus glandulosa)

Pacific Dogwood in the Columbia River Gorge

The Alders of the Columbia River Gorge

Birch in the Columbia River Gorge

The Filberts and Hazelnuts of the Columbia River Gorge

The Aspen and Cottonwoods of the Columbia River Gorge

The Elm Family in the Columbia River Gorge

Willows of the Columbia River Gorge

The Maples of the Columbia River Gorge

Oregon White Oak in the Columbia River Gorge

The Olive or Ash Family in the Columbia River Gorge

White Mulberry: Morus alba (Synonyms: Morus alba var. multicaulis, Morus alba var. tartarica, Morus tatarica)