( 269 ) 
Montana: Mill Creek, 1887, Tweedy, no. 271; Boulder 
Creek, no. 272; Old Hollowtop, near Pony, July 7, 1897, 
frydberg & Bessey; Rocky Mountains, 1861, Lyall; Upper 
Marias Pass, 1883, Canby, nos. 289, 290 and 291; McDon- 
ald’s Peak, no. 288. 
OreEcon: Powder River, 1886, Cusick, no. 1361. 
CALIFORNIA: Sierra Nevada, 1877, Lemmon; Mt. Dana, 
1864, Brewer, no. 1734; Mt. Brewer, 1866, Bolander, no. 
2804; Lemmon, 208; Mt. Stanford, zo. 105; Summit 
Valley, 1882, Pringle. 
British CoLumMBIA: Roger’s Pass, 1890, F. Macoun 
(78824); Kicking Horse Lake (788173); Asoulican Glacier 
(78832); Selkirk Range, 1885 (78876); Kootanie Pass, 
1883, Dawson (18875). 
ALBERTA: Sulphur Mountain, Banff, 1891, Macoun 
(78812) ; Mt. Aylmer, 1891, Aacoun (18811) ; 1895 (13688) ; 
1858, £. Bourgeau. 
NorTHWEsT TERRITORY: Mackenzie River, 1886, /. 
Bell (18820*). 
14. SALIX TENERA Anders. in DC. Prod. 167: 288. 
This is nearly related to the preceding, differing in the 
narrow oblanceolate leaves and the few-flowered catkins. 
The capsule is also much shorter. It grows at an altitude of 
3000 m. or more 
Ween. Lyall (Type). 
CaLirorNiA: Tulare Co., J. W. Congdon. 
Urau: Bear River, 1869, Watson, no. rror. 
MonTANA: (?) Boulder Creek, 1887, Tweedy, no. 273; 
Electric Peak, August 18, 1897, Rydberg & Bessey, no. 
3922. (The last specimens are exactly like the type.). 
I5. SALix Macounir. 
A small shrub with numerous ascending, light brown 
branches, which are glabrous, or very soon glabrate; leaves 
small, about 2 cm. long, dark and shining above, paler be- 
neath, obovate or broadly oblanceolate, acute; catkins 2- “3 
m. long, rather looser than in S. afra; capsule 7-8 m 
long, rather loosely villous, ovoid, with an evident gle: 
