Trees to 90(--100)m; trunk to 4.4m diam.; crown narrow to broadly conic, flattened in age. Twigs slender, pubescent, becoming glabrous with age. Leaves 15--30(--40) × 1--1.5mm, yellow-green to dark or bluish green, apex obtuse to acute. Pollen cones yellow-red. Seed cones 4--10 × 3--3.5cm. Seeds 5--6mm, wing longer than seed body. Pseudotsuga menziesii is a most important timber tree, valued in both the Old and New worlds. The two intergrading varieties are sympatric in southern British Columbia and northeastern Washington. Douglas-fir ( Pseudotsuga menziesii ) is the state tree of Oregon.