Pinus douglasiana Martínez, Madroño 7: 4 (1943).[Douglas pine]
Habit: Tree 20-45 m tall when mature.
Bark: Rough and scaly, dividedinto large, irregular plates with deep fissures, reddish brown becoming grey-brown with age.
Foliage: Needles in 5’s, usually 22-35 cm long, 0.7-1.2 mm wide; margins slightly toothed; yellowish green to bluish-grey green; lax or rigid. Leaf sheath persistent; 20-35 mm long.
Branchlets: Long and slender.
Winter buds: Ovoid to conical; not resinous.
Seeds: Small, 4-5 mm long, 3-3.5 mm wide; light grey or brown, often with dark spots. Wings oblong, 18-24 mm long, pale yellowish brown, translucent.
An important timber tree in its natural distribution range, but hardly used in forestry plantations.