Fl. Bor.-Amer. 2: 166. 1838.
Trees monoecious or dioecious, to 20 (–30) m, single-stemmed; crown rounded to conical. Bark redbrown to brown, exfoliating in thin strips, that of small branchlets (5–10 mm diam.) smooth, that of larger branchlets exfoliating in scales or flakes. Branches spreading to ascending; branchlets erect, 3–4-sided in cross-section, ca. 2/3 or less as wide as length of scalelike leaves. Leaves green, abaxial glands ovate to elliptic, conspicuous, with yellow or white exudate, margins denticulate (at 20×); whip leaves 3–6 mm, not glaucous adaxially; scalelike leaves 1–3 mm, not overlapping, rounded, apex acute to obtuse, appressed. Seed-cones maturing in 2 years, of 2 distinct sizes, with straight peduncle, ovoid, 5–10 mm, blue to blue-black, glaucous, fleshy and resinous, with 2 (–3) seeds. Seeds 2–4 mm.
Calif., Idaho, Nev., Oreg., Wash., only in the flora