SALICACE^E 147 



lanceolate, acute or acuminate, when they unfold light blue-green and coated on the lower 

 surface with long pale or tawny deciduous hairs, at maturity glabrous, dark blue-green and 

 lustrous above, paler and glaucous below, S'-Y long, f'-l|' wide, with a broad flat yel- 

 low midrib; petioles broad, grooved, puberulous, rarely \' long; stipules ovate, acute, 

 finely serrate, usually small and caducous. Flowers: aments cylindric, slender, lax, 

 elongated, 2'-4' long, on leafy'branchlets; scales peltate, dentate at apex, covered with 

 long pale hairs, the staminate obovate, rounded, the pistillate narrower and more or less 

 truncate; stamens usually 5 or 6, with free filaments hairy at the base; ovary conic, acute, 

 rounded below, short-stalked, glabrous, with broad spreading emarginate stigmatic lobes. 

 Fruit elongated, conic, long-stalked, nearly \' in length. 



A tree, 40-50 high, with a straight trunk 2 in diameter, slender spreading branches, 

 and slender light or dark orange-colored or bright red-brown glabrous, or in one form 

 tomentose or villose (f. araquipa Jeps.) branchlets; often much smaller, with an average 

 height of 20-30. Winter-buds ovoid, somewhat obtuse, pale chestnut-brown, J'-' long. 

 Bark f'-l' thick, dark brown slightly tinged with red and deeply divided into irregular 

 connected flat ridges broken on the surface into thick closely appressed scales. Wood 

 light, soft, light brown tinged with red, with thick nearly white sapwood. 



Distribution. Banks of streams; western California from the Oregon boundary to the 

 southern borders of the state, ascending to altitudes of 4500 on the western slopes of the 

 southern Sierra Nevada, and eastward to Mohave and Yavapai Counties, Arizona, south- 

 eastern Nevada and southwestern Utah. 



7. Salix longipes Shuttl. 

 Salix amphibia Small. 



Leaves lanceolate, acuminate or on fertile branches occasionally rounded at the apex, 

 rounded or cuneate at the base, finely serrate, hoary-tomentose early in the season, becom- 

 ing glabrous above, and pale and glabrous or pubescent below, 2'-4' long, '-f ' wide; peti- 



Fig. 141 



oles hoary-tomentose, \'~ long! stipules minute, ovate, acute, hoary-tomentose, caducous, 

 on vigorous shoots foliaceous, reniform, serrate above the middle, often f ' in diameter. 

 Flowers: aments terminal on leafy tomentose or glabrous branchlets, narrow-cylindric, 3' 

 or 4' long; scales ovate, rounded at the apex, yellow, densely villose-pubescent; sta- 

 mens 3-7, usually 5 or 6, the filaments hairy toward the base; ovary ovoid-conic, acute, 

 cuneate at the base with a short 2-lobed style, and pedicels up to ' in length. Fruit ovoid, 

 often rather abruptly contracted above the middle, \' in length. 



