(272) 
that species. The leaves are somewhat hairy when young, 
but the long white hairs are, as in S. glauca, appressed and 
parallel to the midrib. The pubescence of the young shoots 
is more scant and earlier deciduous. The following speci- 
mens belong here: 
Lasrapor: Type in Herb. Torrey (‘* #7. Am. Bor.”) ; 
1860, Dr. Bryant; 1895, A. P. Low (G. S.C., 73687) 5 
Red Bay, 1894, A. C. Waghorne; 1892, Belle Harbor, uo. 
06; Cartrage Bay (28838); Seal Harbor, (78836, 75). 
20. SALIX ATRA. 
A low shrub, with ascending dark brown branches which 
are more or less villous when young; leaves small, 1.5-2. 
cm. long, broadly oblanceolate, acute at both ends, when 
oung covered with long white hairs, which are appressed 
and parallel to the midrib, dark above, pale beneath, turning 
blackish in drying; catkins 1.5-3 cm. long, rather dense ; 
bracts oblong, yellowish, more or less villous; capsule 3-5 
mm. long, ovoid, densely white-woolly, style manifest. 
It differs from S. e/auca in the smaller leaves, which turn 
black, the denser catkin, and the shorter and more woolly 
capsule. The following specimens belong here: 
Laprapor: Ford’s Harbor, 1884, A. Bell (18823); 
Nain (78820). 
Hupson Bay: Upper Savage Island, 1884, A. Bell 
(78823). 
21. SALIX DESERTORUM Richardson, in Frankl. Journ. App. 
371. 
The plant collected and described by Richardson is quite 
unlike the plant that generally goes under the name of S. 
desertorum, "The original is not at all silvery-pubescent. 
It is hairy only when young, and the leaves turn dark in dry- 
ing. Its nearest relative is S. a¢va, from which it differs 
mainly in the narrower leaves. 
Nortuwest Terrirory: Fort Franklin on the Macken- 
zie, Richardson; Rocky Mountains, Drummond, no. 658. 
22. SALIX NIPHOCLAD.\. 
Stem slender, terete, grayish, more or less villous hairy ; 
