Chamaecyparis lawsoniana (A. Murray)

A. J. Rehder (1949) listed, with bibliographic citations, 66 published varieties and forms best considered as cultivars.

Trees to 50 m; trunk to 3 m diam. Bark reddish brown, l0--20(--25) cm thick, divided into broad, rounded ridges. Branchlet sprays predominantly pinnate. Leaves of branchlets mostly 2--3 mm, apex acute to acuminate, facial leaves frequently separated by paired bases of lateral leaves; glands usually present, linear. Pollen cones 2--4 mm, dark brown; pollen sacs red. Seed cones maturing and opening first year, 8--12 mm broad, glaucous, purplish to reddish brown, not notably resinous; scales 5--9. Seeds 2--4 per scale, 2--5 mm, wing equal to or broader than body. 2n = 22.

Trees to 50 m tall; trunk to 3 m d.b.h.; bark reddish brown; leafy branchlets predominantly pinnately arranged. Leaves mostly 2-3 mm, with linear to circular abaxial gland, or eglandular, apex acute to acuminate; leaves on lower side of branchlets not or only slightly glaucous. Pollen cones dark brown, 2-4 mm; pollen sacs red. Seed cones purplish to reddish brown, glaucous, globose, 8-12 mm in diam.; cone scales 5-9, each fertile scale with 2-4 seeds. Seeds 2-5 mm; wing equal to or wider than seed.

Calif., Oreg.

Forests of the Coast Ranges with isolated inland populations at higher elevations in the Siskiyou Mountains and on Mt. Shasta; 0--1500m.

Cultivated. Jiangsu, Jiangxi, Zhejiang [native to W United States]

Cupressus lawsoniana A. Murray bis, Edinburgh New Philos. J., ser. 2, 1: 299, plate 10. 1855

Cupressus lawsoniana A. Murray bis, Edinburgh New Philos. J., n.s., 1: 292. 1855.