SALICACE^ 



161 



glabrous filaments; ovary cylindric, short-stalked, with a distinct style and broad emar- 

 ginate stigmas: pedicels less than half the length of the scale, villose. Fruit oblong-ovoid, 

 acuminate, light reddish brown, pale pubescent, about $' long. 



A tree, occasionally 30 high, with a short trunk rarely exceeding 1 in diameter, slender 

 pendulous branches forming a rather compact round-topped shapely head, and stout 

 branchlets marked by scattered yellow lenticels, coated when they first appear with pale 

 early deciduous pubescence, becoming bright yellow or dark orange color, and in their 

 second year dark red-brown and much roughened by the conspicuous leaf -scars; or more 

 often a shrub. Winter-buds ovoid, acute, nearly terete or slightly flattened, with narrow 

 lateral wing-like margins, light or dark orange color, glabrous or pilose at the base, about 





Fig. 156 



long. Bark thin, dark brown slightly tinged with red, and divided into broad flat ridges. 

 Wood light, soft, close-grained, light brown tinged with red, with thick nearly white sap- 

 wood. 



Distribution. Cook's Inlet, coast of Alaska, and valley of the Yukon River near Daw- 

 son southward through western British Columbia to northern California, ranging eastward 

 through Washington and northwestern Oregon to northern Idaho and Montana. 



From central California to San Bernardino County represented by the variety crassijulis 

 Andr. (S. brachystachys Benth.) with shorter and broader obovate leaves rounded at apex, 

 pubescent and tomentose branchlets and larger pubescent winter-buds. A tree sometimes 

 70 high with a trunk often 2| in diameter. 



On the high Sierra Nevada eastward to the eastern ranges of the Rocky Mountains ot 

 Colorado and to northern New Mexico, northern Wyoming and the Black Hills of South 

 Dakota represented by the var. flavescens Schn. A shrub or rarely a small tree with obo- 

 vate rounded yellowish leaves and branchlets. 



23. Salix Hookeriana Barr. 



Leaves oblong to oblong-obovate, acute or abruptly acuminate, or rarely rounded and 

 frequently apiculate at apex, gradually narrowed and cuneate or rounded at base, coarsely 

 crenately serrate, especially those on vigorous shoots, or entire, when they unfold vil- 

 lose with pale hairs, or tomentose above and clothed below with silvery white tomentum, 

 at maturity tLin and firm, bright yellow-green and lustrous, nearly glabrous or tomentose 

 on the upper surface, pale and glaucous and tomentose or pubescent on the lower surface, 

 especially along the midrib and slender arcuate primary veins and conspicuous reticulate 

 veinlets, 2'-6' long, I'-l^' wide; petioles stout, tomentose, |' |' long. Flowers: aments 



