SALICACE.E 



ous, fragrant, ovoid, long-pointed, frequently curved above the middle, ' long and \ f 

 thick, with 6 or 7 light orange-brown slightly puberulous scales scarious on the margins. 

 Bark %'-%%' thick, ashy gray, deeply divided into broad rounded ridges broken on the 

 surface into thick closely appressed scales. Wood light, dull brown, with thin nearly 

 white sap wood. 



Fig. 120 



Distribution. In California in small groves with widely scattered individuals on the 

 coast ranges, the western slope of the Sierra Nevada up to elevations of 6000-8000, and 

 on the southern mountains to Mt. Palomar in San Diego County; on the California islands, 

 and on the western slopes of the San Pedro Matir Mountains, Lower California. 



On the high Sierra Nevada and in northern California passing into the var. hastata A. 

 Henry, differing in its thicker leaves, usually longer in proportion to their width, often 

 long-acuminate, rounded or cordate at base, frequently 5' or 6' long and 3' or 4' wide, with 

 glabrous petioles and larger sometimes nearly glabrous capsules on glabrous or pubescent 

 aments, sometimes 10'-12' in length, and in its glabrous young branchlets. 



A tree sometimes 200 high, with a trunk 7-8 in diameter, and the largest deciduous- 

 leaved tree of northwestern North America. The wood is largely used in Oregon and 

 Washington for the staves of sugar barrels and in the manufacture of woodenware. 



Distribution. In open groves on rich bottom lands of streams from Siskiyou County, 

 California, to southern Alaska; eastward in the United States through Oregon and 

 Washington to western and southern Idaho; and to the mountains of western Nevada; 

 in British Columbia to the valley of the Columbia River; on the banks of the east fork of 

 the Kaweah River, Tulare County, California, at 10,000 above the sea. 



6. Populus angustifolia James. Narrow-leaved Cottonwood. 

 Populus fortissimo A. Nels & Macbr. 



Leaves lanceolate, ovate-lanceolate, elliptic or rarely obovate, narrowed to the taper- 

 ing acute or rounded apex, gradually narrowed and cuneate or rounded at base, finely 

 or on vigorous shoots coarsely serrate, thin and firm, bright yellow-green above, 

 glabrous or rarely puberulous and paler below, 2'-3' long, |'-1' wide, or on vigorous shoots 

 occasionally 6'-7' long, and 1-|' wide, with a stout yellow midrib and numerous slender- 

 oblique primary veins arcuate and often united near the slightly thickened revolute mar- 

 gins; petioles slender, somewhat flattened on the upper side, and in falling leaving small 

 nearly oval obcordate scars. Flowers: aments densely flowered, glabrous, short-stalked, 

 %'-9>\' long, the pistillate becoming 2|'-4' long before the fruit ripens; scales broadly 

 obovate, glabrous, thin, scarious, light brown, deeply and irregularly cut into numerous 





