The Yew Family in the Columbia River Gorge: The Genus Taxus

The Junipers of the Columbia River Gorge: The Genus Juniperus

The Yellow Cedars of the Columbia River Gorge: The Genus Chamaecyparis

The Red Cedar of the Columbia River Gorge: The Genus Thuja

The True Fir of the Columbia River Gorge : The Genus Abies

The Spruce of the Columbia River Gorge : The Genus Picea

The Pines of the Columbia River Gorge : The Genus Pinus

Douglas Fir in the Columbia River Gorge: The Genus Pseudotsuga

The Hemlock of the Columbia River Gorge : The Genus Tsuga

The Larch of the Columbia River Gorge : The Genus Larix