(271) 
short leafy branches, while in S. chlorophylla they are naked 
from lateral buds. 4S. g/aucops grows on mountain sides at 
an altitude of 2-3000 m., while S. chorophylla grows in cold 
bogs. 
Montana: Gallatin Co., 1886, Tweedy, no. 1784; East 
Boulder Plateau, 1887, wos. 270a and 274; Yogo Baldy, 
Little Belt Mts., 1896, Flodman, no. 367; McDonald’s Peak, 
1883, Canby, no. 284. 
YELLOWSTONE Park: Yellowstone Falls, Aug. 27, 1871, 
Robert Adams in the Hayden Survey (pistillate flowers only ; 
the staminate flowers belong to another species); 1884, 
Tweedy, no. 34. 
IpaHo: Mt. Chauvet, July 29, 1897, Aydberg and Bessey, 
NO. 39I4. 
Wyominc: Sheep Mountain, 1897, Tweedy, no. 297; 
Black Rock Creek, no. 295. 
18. SALrx GLauca L. Sp. Pl. rorg. 
Salix glauca is apparently rare in America, and probably 
confined to the extreme northeast portion. It is characterized 
by its rather lax catkins, its oblong yellow bracts and very 
long conical capsule. The following specimens belong to it: 
GREENLAND: Disco, 1894, Dr. H. &. Wetherill, nos. 205 
and 206; Kvanefjord, Hosenuinge (var. alpina, with very 
small leaves). 
Laprapor: Martin, wos. 2 and 4. 
Avaska: Nurkagak, 1881, McKay. 
1g. SALIx WaGuornel. Salix cordifolia Hook. FI. Bor. 
Am. 2: 152. 1840. Not Pursh, 1814. S. alpestr/s 
Americana Anders. Proc. Am. Acad. 4: 23. 1858. ot 
Salix lanata Americana Anders. 1. c. 13. 
This species is most nearly related to S\ glauca and SS. 
Labradorica. From the former it differs in the broader 
leaves, which are mostly obtuse at both ends, the shorter, 
ovate-conical, and more densely villous capsule. Inthe form 
of the leaves and the structure of the catkins it more resem- 
bles SS. Labradorica, but lacks the peculiar pubescence of 
