Pseudotsuga menziesii

(Mirbel) Franco

Bol. Soc. Brot. ser. 2, 24: 74. 1950.

Common names: Douglas-fir Oregon-pine sapin de Douglas
Basionym: Abies menziesii Mirbel Mém. Mus. Hist. Nat. 13: 63, 70. 1825 Abies taxifolia Poiret 1805, Pinus taxifolia Lambert 1803,
Synonyms: Abies mucronata Rafinesque Pseudotsuga douglasii (Lindley) Carrière Pseudotsuga mucronata (Rafinesque) Sudworth Pseudotsuga taxifolia (Lambert) Britton
Treatment appears in FNA Volume 2.

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.


Alta., B.C., Ariz., Calif., Colo., Idaho, Mont., N.Mex., Nev., Oreg., Tex., Utah, Wash., Wyo., Mexico.


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.

Varieties 2 (2 in the flora).

Selected References



1 Bracts straight, appressed; seed cones 6-10 cm; leaves yellowish green; Pacific Coast region. Pseudotsuga menziesii var. menziesii
1 Bracts spreading, often reflexed; seed cones 4-7 cm; leaves bluish green to dark green or gray-green; Rocky Mountain region. Pseudotsuga menziesii var. glauca
... more about "Pseudotsuga menziesii"
Barney Lipscomb +
(Mirbel) Franco +
Abies menziesii +, Abies taxifolia +  and Pinus taxifolia +
Douglas-fir +, Oregon-pine +  and sapin de Douglas +
Alta. +, B.C. +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, N.Mex. +, Nev. +, Oreg. +, Tex. +, Utah +, Wash. +, Wyo. +  and Mexico. +
Bol. Soc. Brot. +
Illustrated +
Abies mucronata +, Pseudotsuga douglasii +, Pseudotsuga mucronata +  and Pseudotsuga taxifolia +
Pseudotsuga menziesii +
Pseudotsuga +
species +