216 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
17. Salix commutata Bebb, Bot. Gaz. 13: 110. 1888. 
Tyre Locauity: Alpine bogs, Eagle Creek, Wallowa Mountains, Oregon. 
Rance: 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 DisTRIBUTION: Arctic and Hudsonian. 
17a. Salix commutata mixta nom. nov. 
Salix commutata sericea Bebb, Bot. Gaz. 13: 111. 1888, not S. sericea Muhl. 
Type Locaity: ‘North side of Mt. Hood,” Oregon. 
Ranae: Washington and Oregon. 
SPECIMENS EXAMINED: Olympic Mountains, Piper, August, 1890; Flett 112: Horseshoe 
Basin, Lake & Hull 765. 
17b. Salix commutata denudata Bebb, Bot. Gaz. 18: 111. 1888. 
Type Locarity: Eagle Creek meadows, Wallowa Mountains, Oregon. 
Rance: Washington and Oregon. 
SPECIMENS EXAMINED: Cascade Mountains, 7'weedy in 1882. 
Salix commutata differs in but slight and seemingly inconstant characters from S. barclayi. 
Additional material and field study is needed to clear up their relationships. 
18. Salix tenera Anders.; DC. Prod. 162: 288. 1864. 
Tyre Locauiry: “Ad Cascade Mountain, Lat. 49°, alt. 7,000 ped.’ Collected by Lyall. 
Rance: Cascade Mountains, Washington and British 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 Locauity: Grays Peak, Colorado. 
Rance: Washington and Montana to Colorado and California. 
SPECIMENS EXAMINED: Mount Rainier, Flett 2119. 
ZONAL DISTRIBUTION: Arctic. 
Probably not specifically distinct from S. nivalis. 
20. Salix nivalis Hook. Fl. Bor. Am. 2: 152. 1839. 
Tyre Locatity: “Near the summits of the peaks in the Rocky Mountains.” 
Range: Washington to Montana and Wyoming. 
SPECIMENS EXAMINED: Mount Rainier, Fett 2278. 
ZONAL DISTRIBUTION: Arctic. 
21. Salix sitchensis Sanson in Bong. Mem. Acad. St. Peterst. VI. 2: 162. 1832. 
Salix cuneata Nutt. Sylva. 1: 66. 1842. 
TyPE Loca.ity: Sitka. 
Rance: Alaska to middle California, eastward to the Blue Mountains. 
SPECIMENS EXAMINED: Clallam County, Elmer 2428; Seattle, Piper 557; Smith in 1889: 
Tacoma, lett 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 & Hull 809; Stevens Pass, Sandberg & Leiberg 720: Spokane, Sandberg & Leiberg, May, 
1893; Hangman Creek, Sandberg & 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. 
