Flora of North America species comparison

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Pseudotsuga menziesii

coast Douglas-fir, Douglas-fir, Oregon-pine, sapin de Douglas
Habit 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(s)

cones 4–10 × 3–3.5cm.

Pseudotsuga menziesii
Distribution
from FNA
AZ; CA; CO; ID; MT; NM; NV; OR; TX; UT; WA; WY; AB; BC; Mexico
[WildflowerSearch map]
[BONAP county map]
Discussion

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).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Bracts straight, appressed; seed cones 6-10 cm; leaves yellowish green; Pacific Coast region.
var. menziesii
1. Bracts spreading, often reflexed; seed cones 4-7 cm; leaves bluish green to dark green or gray-green; Rocky Mountain region.
var. glauca
Source FNA vol. 2.
Parent taxa Pinaceae > Pseudotsuga
Sibling taxa
P. macrocarpa
Subordinate taxa
P. menziesii var. glauca, P. menziesii var. menziesii
Synonyms Abies menziesii, Abies mucronata, Abies taxifolia, Pinus taxifolia, P. douglasii, P. mucronata, P. taxifolia
Name authority (Mirbel) Franco: Bol. Soc. Brot. ser. 2, 24: 74. (1950)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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