Genus Pseudotsuga
Douglas-fir is the English name applied in common to evergreen coniferous trees of the genus Pseudotsuga in the family Pinaceae.Species in the genus Pseudotsuga of plants
Japanese Douglas-fir - Pseudotsuga japonica is a species of conifer in the pine family, Pinaceae, that is endemic to Japan. It is a medium-sized tree growing to 25 m tall.
Bigcone Douglas-fir - Pseudotsuga macrocarpa, Bigcone Douglas-fir, typically grows from 15-30 m in height and 0.5-1.5 m in trunk diameter. The growth form is straight, with a conical crown from 12-30 m broad, and a strong and spreading root system. The bark is deeply ridged, composed of thin, woodlike plates separating heavy layers of cork; bark of trees over 1 m in diameter is from 15-20 cm thick. The main branches are long and spreading with pendulous side shoots.
Coast Douglas-fir - The specific name, menziesii, is after Archibald Menzies, a Scottish physician and rival naturalist to David Douglas. Menzies first documented the tree on Vancouver Island in 1791. Colloquially, the species is also known as "Douglas Pine" or simply as "doug-fir".