Douglas-Fir Pseudotsuga Menziesii Jeri Chase, ODF Public Affairs Specialist

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featured tree Douglas-fir PseudotsuGA MENZIESII Jeri Chase, ODF Public Affairs Specialist It is Oregon's state tree and best-known conifer. It ranges west of the Cascade Mountains – although it can be found east of those mountains growing among other kinds of trees. It is not a “true fir” – it has the honor of its own genus and actually belongs to the pine family. from the editor: “Oregon’s Native Trees” is a new feature in Forests for Oregon. If you would like to suggest a tree to feature in upcoming issues, just let us know. Forests for Oregon – Winter 007 m o c . s e g a m i y F r t D s e O r , o f e . s a w h w C w i S , e r e e c J e i v y d r l e b i n S to g t o s h d re p e o l ta F ai il A et p SD d ho , U one to c ell C ourtesy Dave Pow m o c . s e g F a D m i O y , r e t s s a e r h o f C . i w r e w J B w y a , b e r c o k i t v o d r h e p e S ta t il il es ta or e ph F d ot A ch o c SD ran our l, U B tesy Dave Powel A young forest full of this tree’s nurseries lead the nation in Christmas new-green growth symbolizes renewal. tree production. The most ambitious re-planting project The dense wood is stiff and durable, ever undertaken produced a “sea of rumored to be stronger than cement. It green” – more than 7 million of this grows straight and tall – taller than 0 tree’s seedlings planted by Oregonians feet and larger than 10 feet in diameter. over 0 years ago creating the Tillamook The “Brummet Fir” state champion State Forest. An older forest of these grows in southern Oregon – 9 feet tall trees seems peaceful – although people and feet in circumference. unaccustomed to them may describe Native Americans lived among these them as spooky and claustrophobic. trees for centuries and used the wood for And a forest of these trees in all ages fuel and to build homes, boiled the bark seems vibrant and exciting, and is full of to heal infections, and made tea from life – from the Douglas Squirrel to the the new growth. Many of Oregon’s tribes The dense wood is legendary Sasquatch. now manage their own forestlands, and very stiff and durable, Our state was built with this tree the revenues enable them to offer much- –families were nurtured by it for needed services to their people. making it one of the generations. Many still are. It is crucial Oregon’s other state forests are also most important and to our economy. In 00, over 17 filled with these trees – the Clatsop, valuable timber trees million board feet of this softwood was Santiam, Elliott – even some in the in the world. harvested in western Oregon, providing southwest corner of the Sun Pass. Forests jobs and every-day products we all use, of these trees are some of the most including the highest quality lumber popular recreation areas in the state. – which Oregon leads the country in It is the Douglas-fir, and there is no producing. It is also the world’s most other tree like it. Visit one of Oregon’s photo courtesy Bill Cook, popular Christmas tree – and Oregon’s forests today and find out why. Michigan State University, www.forestryimages.com Winter 007 – Forests for Oregon 7.

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Psme 46 Douglas-Fir-Incense
PSME 46 DOUGLAS-FIR-INCENSE-CEDAR/PIPER'S OREGONGRAPE Pseudotsuga menziesii-Calocedrus decurrens/Berberis piperiana PSME-CADE27/BEPI2 (N=18; FS=18) Distribution. This Association occurs on the Applegate, Ashland, and Prospect Ranger Districts, Rogue River National Forest, and the Tiller and North Umpqua Ranger Districts, Umpqua National Forest. It may also occur on the Butte Falls Ranger District, Rogue River National Forest and adjacent Bureau of Land Management lands. Distinguishing Characteristics. This is a drier, cooler Douglas-fir association. White fir is frequently present, but with relatively low covers. Piper's Oregongrape and poison oak, dry site indicators, are also frequently present. Soils. Parent material is mostly schist, welded tuff, and basalt, with some andesite, diorite, and amphibolite. Average surface rock cover is 8 percent, with 8 percent gravel. Soils are generally deep, but may be moderately deep, with an average depth of greater than 40 inches. PSME 47 Environment. Elevation averages 3000 feet. Aspects vary. Slope averages 35 percent and ranges between 12 and 62 percent. Slope position ranges from the upper one-third of the slope down to the lower one-third of the slope. This Association may also occur on benches and narrow flats. Vegetation Composition and Structure. Total species richness is high for the Series, averaging 44 percent. The overstory is dominated by Douglas-fir and ponderosa pine, with sugar pine and incense-cedar common associates. Douglas-fir dominates the understory. Incense-cedar, white fir, and Pacific madrone frequently occur, generally with covers greater than 5 percent. Sugar pine is common. Frequently occurring shrubs include Piper's Oregongrape, baldhip rose, poison oak, creeping snowberry, and Pacific blackberry.
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DOUGLAS's Datasheet
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Arthropod Diversity and Conservation in Old-Growth Northwest Forests'
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Douglasfirdouglasfirfacts About
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End Jointing of Laminated Veneer Lumber for Structural Use
End jointing of laminated veneer lumber for structural use J.A. Youngquist T.L. Laufenberg B.S. Bryant proprietary process for manufacturing extremely long Abstract lengths of the material both in panel widths and in LVL Laminated veneer lumber (LVL) materials rep- form. The proprietary process requires a substantial resent a design alternative for structural lumber users. capital investment, limiting production of LVL. If ex- The study of processing options for producing LVL in isting plywood facilities were adapted to processing of plywood manufacturing and glued-laminating facilities 5/8-inch- to 1-1/2-inch-thick panels, subsequent panel is of interest as this would allow existing production ripping and end jointing of the resultant structural equipment to be used. This study was conducted in three components could conceivably compete both in price and phases to assess the feasibility of using visually graded performance with the highest structural grades of lum- veneer to produce 8-foot LVL lengths which, when end ber. Herein lies the major concern of this study: Is it jointed, could be competitive with existing structural technically feasible to manufacture end-jointed LVL lumber products. Phase I evaluated panel-length from PLV panels made in conventional plywood 3/4-inch-thick LVL made from C- or D-grade 3/16-, 1/8-, presses? or 1/10-inch-thick veneer, and the effect of specimen width on flexural and tensile properties. Phase II evalu- An evaluation of the production and marketing ated the use of vertical and horizontal finger joints and feasibility of LVL products made from panel lengths scarfjoints to join 3/4-inch thicknesses of LVL.
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Current U.S. Forest Data and Maps
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Douglas-Fir Pole and Engraver Beetles Attack Small Douglas-Fir Trees
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Paper Birch and Fireweed Stand Establishment Decision Aids
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Douglas-Fir Beetle
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Exterior Species Douglas Fir Sapele True Or Genuine Mahogany Teak Wood Species
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The Identification of Douglas-Fir Wood
UNITED STATES DEPARTMENT OF AGRICULTURE • FOREST SERVICE • FOREST PRODUCTS LABORATORY • MADISON 5 WIS May 1963 FPL-010 1 THE IDENTIFICATION OF DOUGLAS-FIR WOOD Douglas-fir is one of the largest, most abundant and widely distributed species of trees native to North America, and next to the southern yellow pines, it is cut in the greatest quantities of any wood of commercial importance. It be- longs to the coniferous family and is, therefore, a softwood. Other names for Douglas -fir are red fir, yellow fir, Oregon pine, Puget Sound pine, red pine, red spruce, and Douglas spruce. Its botanical name is Pseudotsuga menziesii (Mirb.) Franco. Although Douglas-fir is distinctly a western species, it also is used in many parts of the Middle West and East. It is used for structural timbers, railway ties, railway cars, rough and finish lumber, flooring, sash and doors, furniture, lath, cooperage, tanks, conduits, paving blocks, boxes, agricultural implements, and numerous other articles. The principal softwoods used for the same purposes are the southern yellow pines, Norway pine, eastern hemlock, western hemlock, Sitka spruce, ponderosa pine, western larch, and some of the balsam firs (principally white fir, lowland white fir, noble fir, and silver fir--all western species). As there is a considerable range in the price and suitability of these various woods for various purposes, it is important to be able to distinguish the wood of Douglas -fir from the others. Douglas-fir is a resinous wood, with a characteristic sweetish odor.. Exuda- tions of resin on end and side surfaces and pitch pockets are common.
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Attachment Tachment 4
Tree Species Identification & Description November 8, 2010, GJP ATTACHMENT 4 - Tree Species Identification & Description Subalpine fir (needles soft to the touch) Subalpine fir needles are single (1) on the twig, blunt or notched at the tip, flattened (two- sided), white-grayish spores on undersides, soft to the touch, and are up to ¾ inches long. Buds are round, almost globe-shaped, and orange-brown. Tree bark is smooth and grayish white with pitch blisters. Trees are spire- shaped and grow at upper elevations in combination with Engelmann spruce. Engelmann spruce (needles prickly to the touch) Engelmann spruce needles are single (1) on the twig, pointed, sharp to the touch, four-sided, same color on all sides, and are up to 1 inch long. Needles radiate in all directions on twig. The older twigs from which needles have fallen have stubby pegs on them. Tree bark is scaly. They grow at upper elevations in combination with Subalpine fir. Blue spruce (please do not cut) Page 1 Tree Species Identification & Description November 8, 2010, GJP Lodgepole Pine Lodgepole pine needles are clustered in groups of two (2) on the twig, flat or two-sided, and are about 2-3 inches long. Tree bark is scaly. Douglas-fir Douglas-fir needles are single (1) on the twig, tips are blunt or slightly rounded, flat and two- sided, same color on both sides, soft to the touch, needles are ¾ to 1 ¼ inches long, and very fragrant. Unlike subalpine fir needles, Douglas-fir needles narrow before joining the twig. Bark on young trees look very much like Subalpine fir, becoming more grayish and rigged as tree matures.
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