216 CONTBIBUTIONS FROM THE NATIONAL HERBARIUM. 



17. Salix commutata Bebb, Bot. Gaz. 13: 110. 1888. 



Type locality: Alpine bogs, Eagle Creek, Wallowa Mountains, Oregon. 



Range: Washington and Oregon. 



Specimens examined: Olympic Mountains, Piper, August, 1895; Mount Rainier, 

 Smith, August, 1890; Cascade Mountains, 1,940 meters altitude, Tweedy; Stevens Pass, 

 Sandberg <& Leiberg, 757. 



Zonal distribction: Arctic and Hudsonian. 



17a. Salix commutata mixta nom. nov. 



Salix commutata sericea Bebb, Bot. Gaz. 13: 111. 1888, not S. sericea Muhl. 



Type locality: "North side of Mt. Hood," Oregon. 



Ranoe: Washington and Oregon. 



Specimens examined: Olympic Mountains, Piper, August, 1890; Flett 112; Horseshoe 

 Basin, TAike d- Hull 765. 



17b. Salix commutata denudata IVbb, liot. Gaz. 13: 111. 1888. 



Type uxai.ity: Eagle Creek meadows, Wallowa Mountains, Oregon. 



Range: Washington and Oregon. 



Specimens examined: Cascade Mountains, Tiveedy in 1882. 



Salir commutata differs in but slight and .seemingly inconstant characters from S. bardayi. 

 Additional material and field study is needed to clear up their relationships. 



18. Salix tenera Anders.; TO. Prod. 16^: 288. 1864. 



Type locality: " Ad Ca.scade Mountain, Lat. 49°, alt. 7,000 ped." Collected by Lyall. 

 Range: Cascade Mountains, Washington and Briti.sh Columbia. 



Specimens examined: Cascade Mountains, latitude 49°, Lyall in 1860; mountains north 

 of Ellensburg, Brandegee 1083; Mount Rainier, Flett 2118. 

 Zonal distribution: Arctic. 



19. Salix saximontana Rydberg, Bull. N. Y. Bot. Gard. 1: 261. 1899. 

 Type locality: Grays Peak, Colorado. 



Range: Washington and Montana to Colorado and California. 



Specimens examined: Mount Rainier, T^Zc^/ 2119. 



Zonal distribution: Arctic. 



Probably not specifically distinct from S. nivalis. 



20. Salix nivalis Hook. Fl. Bor. Am. 2: 152. 1839. 



Type locality: "Near the summits of the peaks in the Rocky Mountains." 

 Range: Washington to Montana and Wyoming. 

 Specimens examined: Mount Rainier, Flett 2278. 

 Zonal dlstribution: Arctic. 



21. Salix sitchensis Sanson in Bong. Mem. Acad. St. Petersb. VI. 2: 162. 1832. 

 Salix cuneata Nutt. Sylva. 1: 66. 1842. 



Type locality: Sitka. 



Range: Alaska to middle California, eastward to the Blue Mountains. 



Specimens examined: Clallam County, Elmer 2428; Seattle, Piper 557; Smith in 1889; 

 Tacoma, Flett 31; Nisqually, Allen 108, White Salmon, Suksdorf in 1879; Atanum River, 

 Flett 1346; Mount Adams, Suksdorf 31; west Klickitat County, Suksdorf 24; Skagit Pass, 

 Lake cfe Hull 809; Stevens Pass, Sandberg & Leiberg 720; Spokane, Sandberg <& Leiberg, May, 

 1893; Hangman Creek, Sandberg cfc Leiberg 72; Blue Mountains, Piper, August 2, 1896; 

 Stehekin, Griffiths & Cotton 243. 



Zonal distribution: Transition and Canadian. 



Salix chlorophylla Anders. Vet. Acad. Handl. Stock. 6: 138. 1867. Imperfect speci- 

 mens of a willow collected by Suksdorf on Mount Adams, July 31, 1883, and in the 

 mountains of Skamania County, September 6, 1883, are referred to this species with much 

 hesitation. 



