SALICACEA. SILVA OF NORTH AMERICA. 67 
SALIX AMPLIFOLIA. 
Willow. 
Leaves oval to broadly obovate, nearly glabrous at maturity, glaucous on the lower 
surface. 
Salix amplifolia, Coville, Proc. Washington Acad. Sci. ii. 282, t. 15 (1900) ; iii. 314, t. 35. 
A tree, occasionally twenty-five feet in height, with a trunk a foot in diameter, often much smaller 
and sometimes shrubby. The branchlets are stout, conspicuously roughened by the large elevated 
U-shaped scars of fallen leaves, and marked by occasional pale lenticels; when they first appear they 
are coated with thick villose pubescence which gradually disappears during their second and third 
seasons when the bark is of a dark dull red-purple color. The leaves are revolute in vernation, oval 
to broadly obovate, rounded or broadly acute at the apex, gradually or abruptly narrowed at the 
cuneate base, dentate-serrulate, particularly toward the base, or entire, densely villose above and below, 
with long matted white hairs, when they first appear, and at maturity glabrous or nearly glabrous, 
pale yellow-green on the upper surface, slightly glaucous on the lower surface, from two inches to two 
inches and a half in length and from an inch to an inch and a half in width, with short slender 
tomentose petioles, midribs broad and hoary toward the base of the leaf and thin and glabrous above 
The stipules have not been seen. The flowers, 
which appear with the leaves from the middle to the twentieth of June, are produced on lateral leafy 
branchlets ; they are borne in stout pedunculate tomentose aments, those of the staminate plant varying 
from an inch and a half to two inches in length, and shorter than those of the pistillate plant which 
at maturity are about three inches long; their scales are oblanceolate or lanceolate, dark brown or 
nearly black, and covered with long pale hairs. The stamens are two in number, with slender elongated 
glabrous filaments. The ovary is ovate-lanceolate, short-stalked, glabrous or slightly pubescent, and 
gradually narrowed into the elongated slender style crowned with a two-lobed slender stigma. The 
capsule is ovoid-lanceolate, glabrous, short-stalked, and about a quarter of an inch in length. 
Saha amphifola mhabits the sand dunes which for a few miles skirt the beach on the west side 
of Yakutat Bay, Alaska, at, the mouth of streams flowing from the glaciers of the St. Elias Mountain 
range, where it grows with Salix Alawensis, and where it was discovered by Dr. F. V. Coville* on 
June 22, 1899. It was also collected by Dr. Coville in Disenchantment Bay at Hubbard Glacier and 
on Haenke Island and Egg Island, and on the east shore at the head of Yakutat Bay. 
The wood of Salix amplifolia has not been examined. 
the middle, and numerous thin arcuate primary veins. 
1 Frederick Vernon Coville (March 23, 1867) was born on a 
farm in the township of Preston, Chenango County, New York, of 
In 1869, his father 
having moved to Oxford, New York, the son was educated in the 
a family of English and Scotch descent. 
academy of that town until his entrance at Cornell University, 
from which he was graduated in 1887. In the summer of that 
year Coville joined the Geological Survey of Arkansas as a volun- 
teer assistant, devoting his time to the study of the flora of the 
central and northern parts of that state. He was then instructor in 
botany at Cornell for one year, and in July, 1888, was appointed 
assistant botanist in the United States Department of Agriculture. 
In 1893, on the death of Dr. George Vasey, he was placed in 
charge of the division of botany of that department. Mr. Coville 
was botanist of the United States Death Valley Expedition of 
1891, and his important report, which greatly increased the know- 
ledge of the flora of southeastern California, forms the fourth vol- 
ume of the Contributions from the United States National Herbarium ; 
in 1899 he was one of the botanists who accompanied the Harriman 
Alaskan Expedition. 
biographical papers published in the Proceedings of the Biological 
Society of Washington, in the Reports of the Department of Agri- 
culture, and in the Proceedings of the Washington Academy of Sci- 
He is the author of several botanical and 
ence. In the last he has described in two papers the Willows of 
Alaska. 
