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HomeWood ArticlesAbout the ProjectContact Douglas-Fir Douglas-Fir (Pseudotsuga menziesii)Common Name(s): Douglas-FirScientific Name: Pseudotsuga menziesiiDistribution: Western North AmericaTree Size: 200-250 ft (60-75 m) tall, 5-6 ft (1.5-2 m) trunk diameterAverage Dried Weight: 32 lbs/ft3 (510 kg/m3)Specific Gravity

San Francisco State University Department of Geography   Biogeography of Douglas-fir (Pseudotsuga menziesii) Jordin A. Williams Student in Geography 316, Fall 2000   Old Growth Douglas-fir near Mendocino, California,  October, 2000. Estimated to be between 300-400 years old. ( Photo by author) Grow

Encyclopædia Britannica Subscribe Log In · Join In the News Spotlight Demystified Quizzes Galleries Lists Search Click here to search Douglas firtree Written By: The Editors of Encyclopædia Britannica Last Updated: 6-2-2014 Alternative Title: Pseudotsuga Douglas fir (genus Pseudotsuga), any of about six

home > Douglas-fir genus Douglas-fir (Pseudotsuga) Needles are about 1 long with a blunt tip. Green on top with 2 white bands below. Woody cones (3-4 long) hang down; have pitchfork-shaped bracts. Buds are large and pointed with reddish-brown overlapping scales. Douglas-fir is the name of an entire genus of trees t

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Douglas fir, with the scientific name Pseudotsuga menziesii, is an evergreen conifer species native to western North America . The common name honors David Douglas , a Scottish botanist and collector who first reported the extraordinary nature and potential of the species. The common name is misleading since it is not