THE WILLOWS OF ALASKA 



307 



America. It occurs in most of the northern portions of the United 



States, reaching southward in the east to Pennsylvania, in the Rocky 



Mountain region to New Mexico and Arizona, and on the Northwest 



Coast to Oregon. The original specimens were 



collected on Sir John Franklin's first expedition, 



in the interior of British America. In Alaska 



the species has a very restricted range from the 



upper waters of Cook Inlet eastward to the 



upper Yukon Valley. Near Homer, in Cook 



Inlet, on the brushy portion of the point, it is 



reported by Mr. Evans as a shrub or small tree 



4 to 15 feet (1.2 to 4.5 meters) high, at Kasilof ^ 



10 to 25 feet (3 to 7.5 meters) high and 8 inches 



(20 cm.) in diameter. 



The following specimens have been examined : 



Cook Inlet. — At Homer, Sunrise, and Kasi- 

 lof, Walter H. Evans, i897(Nos. 470, 491), 1898 

 (No. 693). At Kenai, F. A. Walpole, 1900 

 (No. 1 143). Between Cook Inlet and the 

 Tanana River, probably from the lower 

 Sushitna, E. F. Glenn, 1899. 



Yukon Valley. — Near the junction of Forty- 

 mile Creek and the Yukon, Frederick Fun- 

 ston, 1893 (Nos. 39, 42). At Fort Yukon, F. C. Schrader, 1899. 



Dr. P. A. Rydberg has published recently,^ while this paper was 

 in press, a Salix perrostrata^ based primarily on specimens collected 

 by himself near Hermosa, in the Black Hills of South Dakota, and to 

 that species he has referred a specimen collected by Mr. R. S. Wil- 

 liams at Dawson, Yukon Territory, besides assigning the species a 

 range northwestward to Alaska. While his bibliographical references 

 indicate that the species is a segregate from bebbiana^ the author gives 

 no comparison of distinguishing characters. I am unable to find in 

 his description anything to distinguish our Alaskan specimens from 

 what I take to be typical bebbiana^ whatever may prove to be the re- 

 lation of that species to the Black Hills willow. 



Fig. 17. Salix beb- 

 biana Sargent: «, fruit- 

 ing catkin, natural 

 size ; ^, capsule, with 

 pedicel, scale, and 

 nectary, enlarged two 

 diameters. 



2. SALIX SITCHENSIS Sanson. Satin Willow. 



Plate XXXIII. 



Salix sitchensis Sanson ; Bongard, Mem. Acad. Petersb. VI. Math. & Nat. 

 2 : 162. 1831. 



^ Variously spelled Kassiloff, Kassilof , Kussilof , Kussilow, etc. 

 2 Bull. N. Y. Bot. Gard. 2 : 163. 1901. 



