Pseudotsuga menziesii, commonly known as Douglas fir, Douglas-fir and Oregon pine, is an evergreen conifer species native to western North America. One variety, the coast Douglas fir, grows along the Pacific Ocean from central British Columbia south to central California. Douglas firs are medium-size to extremely large evergreen trees, 20_100 metres (70_330 ft) tall (although only coast Douglas firs reach such great height). The leaves are flat, soft, linear, 2_4 centimetres (3?4_1 1?2 in) long, generally resembling those of the firs, occurring singly rather than in fascicles; they completely encircle the branches, which can be useful in recognizing the species. As the trees grow taller in denser forest, they lose their lower branches, such that the foliage may start high off the ground. Douglas firs in environments with more light may have branches much closer to the ground. (Wikipedia) Photo credit: Tom Appel CC BY-SA 3.0.