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; 

 Blount Rainier, Smith 690; Mount Adams, Henderson 2147; Stevens Pass, Sandberg c& Lei- 

 here), August, 1893: Wenache Region, Brandegee, 1176; North Fork of Bridge Creek, Elmer 

 735; Mount Stuart, Elmer 1151; Skamania Count}', Flett 1371; Cascade Mountains, Vasey 

 423. 



Zonal distribution: Iludsonian. 



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

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

 Type locality: "Hab. ad Monte-Rey Californiae."' 



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



Specimens exai^iined: Douglas County, Spillman, May, 1896; Sandherg d' Leiherg 292; 

 Wilson Creek, Sandberg <& Leiherg 395; Clealum, Henderson, June, 1892; Spipen [Naches] 

 River, Wilkes Expedition; Klickitat River, Flett 1369; Pullman, Piper 1922, 1758; Elmer 

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

 Blue Mountains, Honker 491 ; Kittitas County, Vasey 92; Palouse City, F. D. Cloud, June 22, 

 1895. 



Zonal distribution: Arid Transition. 



4. Deschampsia elongata (Hook.) Munro in Bentli. PI. Hartw. 342. 18-57. 

 Aira elongata Hook. Fl. Bor. Am. 2: 243. 1840. 



Type locality: "Sandy islands of the River Columbia." Collected Vj}" Douglas. 



Range: Britisii Columbia to Montana and California. 



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

 Mason County, Kineaid, June, 1893; Montesano, Heller 4044, 3953a; Nisqually Valley, Allen 

 38; Seattle, Piper 843; Okanogan County, Sandberg & Leiherg 582; North Yakima, G H. 

 Watt; Wenache, Whited 1302; Stehekin, Whited 1399; Roslyn, Wldted 477; Skamania County 

 Flett 1372; Pullman, Piper 1741 ; Walla Walla, Brandegee 1174; Blue Mountains, Lake & Hull 

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



Zonal distribution: Transition. 



TRISETUM. 



Lemmas awnless; panicle narrow 1. T . muficum. 



Lemmas awned. 



Panicle dense and spike-like 2. T. 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 Scribn. U. S. Dept. Agr. Div. Agrost. 11: 50. 1898. 

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

 Trisetum hrandegei Scribner, Bull. Torr. Clul) 10: 64. 1883. 



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

 Range: California to Washington, east to Colorado. 

 Specimens examined: Spangle, 5(/i:s(Zo?/ 949. 

 Zonal distribution : Arid Transition. 



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

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



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



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



Type locality: "Habitat in Lapponiae alpibus." 



Range: Alaska to Labiador, south to California, New Mexico, and North Carolina. 



