Douglas fir, with the scientific name Pseudotsuga menziesii, also known as Oregon pine or Douglas spruce, 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 a true fir, i.e., not a member of the genus Abies. For this reason the name is often written as Douglas-fir (a name also used for the genus Pseudotsuga as a whole).
The bark on young trees is thin, smooth, gray, and contains numerous resin blisters. On mature trees, it is thick and corky. The shoots are brown to olive-green, turning gray-brown with age, smooth, though not as smooth as fir shoots, and finely pubescent with short, dark hairs. The buds are a very distinctive, narrow, conic shape, 4–8 mm (0.16–0.31 in) long, with red-brown bud scales. The leaves are spirally arranged, but slightly twisted at the base to lie flattish on either side of the shoot, needle-like, 2–3.5 cm (0.79–1.38 in) long, green above with no stomata, and with two whitish stomatal bands below. Unlike the Rocky Mountain Douglas fir, coast Douglas fir foliage has a noticeable sweet fruity-resinous scent, particularly if crushed.
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