120 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



8. Agrostis ampla A. S. Hitchcock, U. S. Dept. Agr. Bur. PI. Ind. Bull. 68: .38. 1905. 

 Type locality: "On wet rocks near Rooster Rock, Multnomah County, Oregon." 

 Range: British Columbia to Arizona. 



Specimens examined: Olympic Mountains, Mrner 1953; Se&ttie, Henderson 2113 ■. What- 

 com iJake, Sxilcsdorf 132; Bingen, Snlcsdorf 2829; Falcon Valley Suksdotf 132; Skamania 

 County, FZe« 1389. 



Zonal DiSTKiBt'TiON : Humid Transition. 



This species was previously referred to the Mexican A. lirescens H. B. K. 



9. Agrostis exarata Trin. Gram. Unifi. 207. 1824. 



Agrostis grandis Trin. Mem. Acad. St. Petersb. IV. 6-': 316. 1841. 



Agrostis asperifolia Trin. op. cit. 317. 



Agrostis scouleri Trin. op. cit. 329. 



Agrostis albicans Buckl Proc. Acad. Phila. 1862: 91. 1862. 



Type locality: "Ex Unalaschka." Collected by Eschscholtz. 



Range: Alaska to Mexico. 



Specimens examined: Olympic Mountains, Elmer 19.52; Clallam County, Elmer 1949; 

 Montesano, Heller 4018; Point Orchard, Piper 2311; Seattle, Henderson 2114; Upper 

 Nisqually Valley, Allen 45; Wenache Region, Brandegee 1163; North Yakima, Watt, 

 August, 1895; Yakima River, Cotton 425; Cascade Mountains, 49°, Lxjall in 1859; South- 

 bend, Spillman, August 17, 1899; Chelan, Elmer 485; Douglas County, Sandberg cfe Leiberg 

 370; Wilson Creek, LaJt-e cfc Hull 97; Spokane, Piper 2852, 2623; Steptoe, Vasey, June, 

 1900; Waitsburg, Homer 499; Blue Mountains, Salmon River, Horner 496; Pullman, 

 Piper 17.59, 1923; Cascade Mountains, Vasey 149. 



Zonal distribution : Upper Sonoran to Arctic. 



10. Agrostis rossae Vasey, Contr. Nat. Herb. 3: 76. 1892. 



Agrostis varians Trin. Mem. Acad. Petersb. VI. 6-: 314. 1841, not Thuill. 1790. 



Agrostis variabilis Rydberg, Mem. N. Y. Bot. Gard. 1: 32. 19(X). 



Type locality: Yellowstone Park, Wyoming. 



Range: British Columbia to Colorado and California. 



Specimens examined: Olympic Mountains, Elmer 1948, Piper 1994; Nason Creek, 

 Sandberg cfc Leiberg 656; Mount Rainier, Allen 179; Piper 1978, 1979, 1972, 1980, 1970; 

 Skamania Count}^ SuJcsdorf 1020; Mount Adams, Henderson 2127; .A.tanum River, Hen- 

 derson 2119; Horseshoe Basin, Elmer 730; Walla Walla, Piper 179a. 



Zonal distribution: Hudsonian and Arctic. 



11. Agrostis hyemalis (Walt.) B. S. P. Prel. Cat. N. Y. 68. 1888. 

 Comucopiae hyemalis Walt. FI. Car. 73. 1788. 



Agrostis scabra Willd. Sp. PI. 1: 370. 1799. 



Agrostis nutkaensis Kunth, Enum. PI. 1: 222. 1833. 



Trichodium album PresI, Rel. Haenk. 1 : 244. 1830. 



Agrostis laxifiora (Michx.) Richards. Bot. App. Frankl. .Tourn. 731. 1823. 



Type locality : Carolina. 



Range: Throughout most of North America. 



Specimens examined: Clallam County, Elmer 1950; Southbend, Spillman, August 17, 

 1899; Orcas Island, Henderson 2112; Snoqualmie Falls, Piper 827; Nisqually Valley, 

 Allen 43; Taconm, Flett 17; Cascade Mountains, Henderson, August, 1892; Tieton River, 

 Cotton 435; North Yakima, Watt in 1895; Glenwood, Flett 1395; Parker, Dunn, August 8, 

 1901; Ophir, Elmer 510; Loomis, Elmer 557; Thorn Creek, Fasey, July 10, 1901; Steptoe, 

 Vasey, July, 1900; Spokane, Henderson 2111; Pullman, Piper 1927; Blue Mountains, 

 Horner 505; Cascade Mountains. Vasey 382, 68. 



Zonal distribution: Transition. 



