Douglas Fir Definition

Douglas Fir Sentence Examples

• The Puget Sound Basin and the neighbouring slopes of the Cascade and Olympic Mountains are noted for their forests, consisting mainly of giant Douglas fir or Oregon pine (Pseudotsuga Douglasii), but containing also some cedar, spruce and hemlock, a smaller representation of a few other species and a dense undergrowth.

• The mountain valleys are covered with little except grasses; on the higher parts of the mountains there are barren rocks or only a scant growth of timber; but many of the lower mountain slopes, especially those along the western border, are clothed with heavy timber, ponderosa pine, lodgepole pine, Douglas-fir and western larch being the principal species.

• On the westward slopes, especially of the Selkirks and Coast Ranges, vegetation is almost tropical in its density and luxuriance, the giant cedar and the Douglas fir sometimes having diameters of 10 ft.

• From the coast to the eastern base of the Cascade Mountains the state is heavily timbered, except in small prairies and clearings in the Willamette and other valleys, and the most important tree is the great Douglas fir, pine or spruce (Pseudotsuga Douglasii), commonly called Oregon pine, which sometimes grows to a height of 300 ft., and which was formerly in great demand for masts and spars of sailing-vessels and for bridge timbers; the Douglas fir grows more commercial timber to the acre than any other American variety, and constitutes about five-sevenths of the total stand of the state.

• In the most heavily wooded region along the Pacific coast and the lower course of the Columbia river are forests of the Douglas fir with stands of 100,000 ft.