SALICACE.E 



Coast of Vancouver Island, British Columbia and shores of Puget Sound; Tualitin, 

 Washington County, and valley of the Willamette River at Corvallis, Benton County, 

 Oregon. 



2. Populus grandidentata Michex. Poplar. 



Leaves semiorbicular to broad-ovate, short-pointed at apex, rounded, abruptly cuneate 

 or rarely truncate at the broad entire base, coarsely repand-dentate above with few stout 

 incurved teeth, covered like the petioles early in the season with white tomentum, soon 

 glabrous, thin and firm in texture, dark green above, paler on the lower surface, 2'-3' long, 

 2'-2^' wide, with a prominent yellow midrib, conspicuously forked veins, and reticulate 

 veinlets; petioles slender, laterally compressed, l'-2|' long. Flowers: aments pubescent, 

 1^'-2|' long, the pistillate becoming 4 '-5' long at maturity; scales pale and scarious below, 

 divided above into 5 or 6 small irregular acute lobes covered with soft pale hairs; disk shal- 

 low, oblique, the staminate entire, the pistillate slightly crenate; stamens 6-12, with short 

 slender filaments and light red anthers ; ovary oblong-conic, bright green, puberulous, with 



Fig. 117 



a short style, and spreading stigmas divided nearly to the base into elongated filiform lobes. 

 Fruit ripening before the leaves are fully grown, often more or less curved above the mid- 

 dle, light green and puberulous, thin-walled, 2-valved, about |' long; pedicel slender, 

 pubescent, about iV in length; seeds minute dark brown. 



A tree, often 60-70 high, with a trunk occasionally 2 in diameter, slender rather rigid 

 branches forming a narrow round-topped head, and stout branchlets marked by scattered 

 oblong orange-colored lenticels. coated when they first appear with thick hoary deciduous 

 tomentum, becoming during their first year dark red-brown or dark orange-colored, gla- 

 brous, lustrous, or covered with a delicate gray pubescence, and in their second year dark 

 gray sometimes slightly tinged with green and much roughened by the elevated 3-lobed 

 leaf -scars; generally smaller, and usually not more than 30-40 tall. Winter-buds terete, 

 broadly ovoid, acute, with light bright chestnut-brown scales, pubescent during the winter 

 especially on their thin scarious margins, about f long and not more than half the size of 

 the flower-buds. Bark thin, smooth, light gray tinged with green, becoming near the base 

 of old trunks f'-l' thick, dark brown tinged with red, irregularly fissured and divided into 

 broad flat ridges roughened on the surface by small thick closely appressed scales. Wood 

 light brown, with thin nearly white sapwood of 20-30 layers of annual growth. 



Distribution. Rich moist sandy soil near the borders of swamps and streams; Nova 

 Scotia, through New Brunswick, southern Quebec and Ontario to northern Minnesota, 



