286 THE CULTIVATED EVERGREENS 



slightly ridged and silvery-white on the upper side, sharply acute or acumi- 

 nate, 3^-1 inch long: staminate flowers red: cones cylindric-oval, pale yel- 

 lowish- or reddish-brown, 23'2~4 inches long; scales rounded at the apex and 

 erose; bracts visible between the scales. Alaska to California. — Introduced 

 to Europe in 1831. In the eastern States it is not tliriving, as it cannot stand 

 the hot and dry summer; it is probably not hardy north of New York. Where 

 it grows well, it is a higlily ornamental tree, especially attractive on account 

 of the contrasting colors of its leaves. 



Var. speciosa, Beiss., is of slower growth and more compact habit, with 

 more ascending branches and shorter, more rigid leaves. 



Section III. Omorica, Wilk, 



Leaves more or less compressed, with glaucous lines above, green below: 

 scales of cone closely appressed before maturity, broad and entire or nearly 

 so on the margin. 



27. P. complanata, Mast. Tree to 80 feet tall, with horizontal branches 

 and short pendulous branchlets; bark pale gray, comparatively smooth, 

 on older trees darker and fissured; branchlets orange-brown, pubescent or 

 the leading shoots glabrescent, with swollen pulvini and very short petioles; 

 winter-buds dark brown, ovoid, acutish: leaves compressed, abruptly acumi- 

 nate and often pungent, ^-"^ inch long, with broad white bands above, 

 green and keeled beneath: cones cylindric-oblong, 5-63^ inches long, with 

 broad, rounded or truncate scales; bracts long-acuminate. Western China. — 

 Introduced in 1903 to England by E. H. Wilson and in 1908 to the Arnold 

 Arboretum where it has proved hardy only in sheltered positions. 



28. P. Sargentiana, Rehd. & Wils. Sargent S. Tree to 75 feet tall, with 

 spreading, slightly pendent branches; bark grayish-brown, fissured into 

 irregular plates; branclilets at maturity orange to pale yellow, the weaker 

 ones more or less stipitate-glandular, the stronger shoot usually glabrous, 

 with short slightly recurved petioles; winter-buds conspicuous, dark brown, 

 conic-ovoid, acutish to obtusish: leaves compressed, curved, acutish or 

 obtuse, f-l inch long and about iV inch broad, with 2 broad white bands 

 above, green and lustrous beneath, keeled on both sides: cones oblong- 

 cylindric, 23/2~5 inches long, often persisting one year after maturity; scales 

 firm, broadly cuneate-obovate, rounded or truncate at apex, spreading at 

 maturity; bracts minute, rounded at apex. Western China. — Introduced in 

 1910 by E. H. Wilson to the Arnold Arboretum where it has proved hardy 

 only in sheltered positions. 



29. P, ascendens, Patschke. Pyramidal tree to 80 feet tall, with hori- 

 zontally spreading branches upturned at the ends and with slender pendent, 

 branchlets; branchlets pale brown, setosely hairy or the stronger shoots 



