124 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Range: Mountains of New England and New York to Alaska south to Oregon and 

 Colorado. Europe. 



Specimens examined: Olympic Mountains, Elmer 1670; Mount Rainier, Piper 1949; 

 Mount Rainier, Smith 690; Mount Adams, Henderson 2147; Stevens Pass, Sanclhenf cfr Lei- 

 herg, August, 1893; Wenache Region, Brandegee, 1176; North Fork of Bridge Creek, Elmer 

 735; Mount Stuart, Elmer 1151; Skamania County, FUU 1371; Cascade Mountains, Veuiey 

 423. 



Zonal distribution: Hudsonian. 



3. Deschampsia calycina Presl, Rel. Haenk. 1: 251. 1830. 

 Aira danlhonioides Trin. Mem. Acad. St. Petersb. VI. 1: 57. 1830. 

 Type locality: "Hah. ad Monte-Rey Califomiae." 



Range: Washington and Idaho to California and Arizona. Peru. 



Specimens examined: Douglas County, Spillman, May, 1896; Sandberg d' Leiberg 292; 

 Wilson Creek, Sandberg d' f^iberg 395; Clealum, Henderson, June, 1892; Spipen [Naches] 

 River, Wilkes Expedition; Klickitat River, Flett i:j69; Pullman, Piper 1922, 1758; Elmer 

 888; Steptoe, Vasey 25; Rattlesnake Mountains, CoZ/on 413; Walla Walla, Brandegee 1175; 

 Blue Mountains, Horner 491 ; Kittitas County, I'asey 92; Palouse City, F. D. Cloud, June 22, 

 1895. 



Zonal distribution: Arid Transition. 



4. Deschampsia elongata (Hook.) Munro in Benth. PI. Hartw. 342. 1857. 

 Aira elongata H(K)k. Fl. Bor. Am. 2: 243. 1840. 



Type IjOCALIty: "Sandy islands of the River Columbia." Collected by Douglas. 



Range: British Columi)ia to Montana and California. 



Specimens examined: Olympic Mountains, Elmer 1664; Sian Juan Island, Lyall in 1858; 

 Mason County, Kincaid, June, 1893; Montcsano, Heller 4044, 3953a; Nisqually Valley, Allen 

 38; Seattle, Piper 843; Okanogan County, Sandberg d^ Leiberg 582; North Yakima, H. 

 Watt; Wenache, Whited 1302; St«hekin, Whited 1399; Roslyn, Whited 477; Skamania County 

 Flett 1372; Pullman, Piper 1741 ; Walla Walia, Brandegee 1174; Blue Mountains, Lake cfc Huli 

 70; Mount Carlton, Kreager 199; Tieton River, Cotton 50; Ellensburg, Vasey 389. 



Zonal distribution: Transition. 



TRISETTJM. 



Lemmas awnless; panicle narrow 1. T. muticum,. 



Lemmas awned. 



Panicle dense and spike-like 2. 7'. spicatum. 



Panicle loose and open. 



Sheaths pubescent , lemma 7 mm. long 3. T. canescens. 



Sheaths glabrous; lemma 5 mm. long - 4. T. cernuum. 



1. Trisetum muticum Scrihn. U. S. Dept. Agr. Div, Agrost. 11: 50. 1898. 

 Trisetum subspicatum muticum- Boland.; S. Wats. Bot. Cal. 2: 296. 1880. 

 Trisetum brandegei Scribner, Bull. Torr. Club 10: 64. 1883. 



Type locality: "On the upper Tuolumne," California. Collected by Bolander. 

 Range: California to Washington, east to Colorado. 

 Specimens examined; Spangle, -Sujtseior/ 949. 

 Zonal distribution: Arid Transition. 



2. Trisetum spicatum (L.) Richter, PI. Eur. 1: 59. 1890. 

 Ana spicata L. Sp. PI. 1: 64. 1753. 



Aria subspicata L. Syst. Veg. ed. 10 : 873. 1759. 



Trisetum subspicatum Beauv. Agrost. 88 and 180. 1812. 



Type locality: "Habitat in Lapponiae alpibus." 



Range: Alaska to Labrador, south to Cahfornia, New Mexico, and North Carolina. 



