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Pseudotsuga menziesii var. menziesii, commonly known as Coast Douglas-fir, Pacific Douglas-fir, Oregon pine, or Douglas spruce, is an evergreen conifer native to western North America from west-central British Columbia, Canada southward to Central California, United States.
The Douglas fir (Pseudotsuga menziesii) [4] is an evergreen conifer species in the pine family, Pinaceae.It is native to western North America and is also known as Douglas-fir, [5] Douglas spruce, [6] Oregon pine, [7] and Columbian pine. [8]
Pseudotsuga menziesii var. menziesii has attained heights of 393 feet (120* m). That was the estimated height of the tallest conifer ever well-documented, the Mineral Tree ( Mineral, Washington ), measured in 1924 by Dr. Richard E. McArdle, [ 7 ] former chief of the U.S. Forest Service. [ 8 ]
Pseudotsuga menziesii var. lindleyana, commonly known as the Mexican Douglas-fir, is a conifer in the genus Pseudotsuga that is endemic to Mexico. [1] DNA sequence [2] and morphological [3] evidence suggests it is most closely related to Rocky Mountain Douglas-fir (P. menziesii var. glauca) and might best be treated as an additional variety within P. menziesii.
Pseudotsuga menziesii var. glauca, or Rocky Mountain Douglas-fir, is an evergreen conifer native to the interior mountainous regions of western North America, from central British Columbia and southwest Alberta in Canada southward through the United States to the far north of Mexico. [2]
Big Lonely Doug is a large Coast Douglas-fir (Pseudotsuga menziesii) tree located in the Gordon River Valley, 10km north of Port Renfrew on Vancouver Island, British Columbia, Canada. It is the second largest Douglas-fir tree in Canada after the Red Creek Fir in nearby San Juan Valley. [1]
The Red Creek Fir is a large Douglas fir (Pseudotsuga menziesii) tree located in the San Juan Valley of Vancouver Island in British Columbia, Canada. By volume, it is the largest known Douglas fir tree on Earth. [2] [3]
The species of the subfamily Laricoideae are evergreen or deciduous trees that can reach the greater heights in the Pinaceae family (over 100 meters with Pseudotsuga menziesii var. menziesii [2]). The leaves are needle-like [ 1 ] and have primary stomatal bands only on the abaxial surface (below the phloem vessels).