268 WOODY PLANTS OF MASSACHUSET'IS. 
England. Sir W. J. Hooker says it is one of the most generally 
diffused of all the willows in British North America, being found 
throughout Canada, from Lake Huron to the Saskatchawan 
and Jasper’s Lake in the Rocky Mountains, and to the Colum- 
bia River, and as far north as Fort Franklin on the Mackenzie 
River. It occurs as far south as Chester County, Pennsylvania. 
It has a near resemblance to S. penténdra, of Europe, but 
the leaves differ in having amuch longer acumination, and in 
having their serratures less glandular, and the male aments and 
their footstalks are much shorter. 
Grove Sixtu. Tsar Waite Wittows. Albe. Borrer. 
Trees of the largest size, having lanceolate, serrated leaves, 
with glandular serratures, long appressed, silky hairs beneath, 
and often above, giving to the foliage a whitish or bluish hue. 
Flowers loosely disposed in the catkins ; stamens two; ovaries 
smooth.—Hooker, Eng. Fl., 418. 
Sp. 13. Tue Waite Wittow. S. alba. L. Introduced. 
Figured in Sowerby’s English Botany, 2430. The tree in Loudon, Arb., 
VII, 209. 
Leaves elliptic-lanceolate, regularly glandular-serrate, acute, silky beneath, 
often above ; ovaries ovate-acuminate, nearly sessile, smooth ; stigmas short, 
recurved, deeply cleft; stamens two, with hairy filaments; scales short, pu- 
bescent at the margin.—Hooher’s Eng. Fi., p. 418. 
‘A native of Europe, from Norway and Sweden to the Med- 
iterranean Sea; of the north-east and west of Asia; near all 
the large rivers of Russia and Livonia, especially the Irtish, 
where it attains the height of a large tree.””—Zoudon, 1523. It 
has long been more extensively planted throughout Britain, as 
a timber tree, than any other species. It grows rapidly, often 
to the height of thirty feet in ten years, and, in favorable situa- 
tions, attains an elevation of even eighty feet and upwards. It 
has been extensively planted in various parts of the Continent 
of Europe, particularly in Russia, on the road from Moscow to 
the Austrian frontier. 
it has also been introduced and extensively planted in this 
