PIPER FLORA OF THE STATE OF WASHINGTON. 131 



Specimens examined: Fairhaven, Piper 2605; Ellensburg, Piper 2618; Steptoe, Vasey 

 50; Colfax, Vasey 60. 



3. Poa macrantha Vasey, Bull. Torr. Club 15: 11. 1888. 



Ti'PE locality: "At the mouth of the Columbia River.'' Collected by Howell. 

 Range: Seacoast of Oregon and Wasliington. 



Specimens examined: Coupeville, Gardner 335; Clallam County, Elmer 1923; West- 

 port, Henderson 2243; Heller 3944. 



Zonal distribution: Humid Transition. 



4. Poa pratensis L. Sp. PI. 1: 67. 1753. Kentucky bluegrass. 

 TiPE locality: "nabiiat in Europae pratis fertilissimis." 



Speclmens examined: Clallam County, E/zwer 1922, 1920; near Montesano, //f//f/- 3866; 

 White River, Vasey 125; Cascade Mountains, Vasey 124; Sunnyside, Cotton 375; Spokane, 

 Sandberg db Leiherg, May, 1893; Steptoe, Vasey 21; Colfax, Vasey, June 20, 1900; Pullman, 

 Piper, June, 1893. 



5. Poa confinis Vasey, U. S. Dept. Agr. Div. Bot. Bull. 13-: pi. 75. 1893. 

 Poa abbreriata R. Br. err. det. Thurb. in Wats. Bot. Cal. 2: 312. 1880. 



Ti'PE locality: Tillamook Bay, Oregon, according to label on type specimen. Col- 

 lected by Howell. 



Range: Alaska to Oregon. 



Specimens examined: Westport, Henderson 2245; Port Angeles, Piper 2308; Clallam 

 County, Elmer 1921; Port Discovery, Wilkes Expedition; Port Orchard, Piper: Johns 

 Island, Laurence 200; Ilwaco, Piper. 



Zonal distribution : Humid Transition. 



6. Poa nervosa (Hook.) Vasey, U. S. Dept. Agr. Div. Bot. Bull. 13': pi. 81. 1893. 

 Festnca nervosa Hook. Fl. Bor. Am. 2: 251. 1840. 



Ti'PE locality: "Nutka Sound." Collected by Scouler. 

 Range: British Columbia to Oregon. 

 Specimens examined: Cape Horn, Piper 4901. 

 Zonal distribution: Humid Transition. 



7. Poa olneyae Piper, Erythea 7: 101. 1899. 

 Type locality: Spokane, Washington. 

 Range: British Columbia to Oregon and Idaho. 



Specimens examined: Klickitat River, Flett 1358; Falcon Valley, Siiksdorf 10; Mount 

 Adams, Sulcsdorf 160; Cleveland, Siiksdorf 109; Simcoe Mountains, Howell 9; Mount 

 Stuart, Elmer 1159; Atanum River, Henderson 2226; Upper Naches River, Henderson 

 2235; Spokane, Sandberg d-. Leiberg, May, 1893; Piper 2295, 2820; Wenache Mountains, 

 Elmer 467, 468, 444; Whited 672; Cotton 1262, 1627, 1658. 



Zonal distribution: Arid Transition. 



This species is near P. wheeleri Vasey and our plant has been referred to that species. 



8. Poa trivialis L. Sp. PI. 1: 67. 1753. Rough meadow grass. 

 Type locality: "Habitat in Europae pascuis." 



Specimens examined: Tacoma, Piper, July 5, 1897; Puyallup, Piper 3927, 3928. 



9. Poa arctica R. Br. Suppl. to App. Parry's Voy. 288. 1824, 

 Type locality: Melville Island. 



Range: Alaska to Labrador, south to Washington and Colorado. 

 Specimens examined: Mount Rainier, Allen 46; Piper 1966. 

 Both these collections were distributed as Poa laxa Haenke. 

 Zonal distribution: Arctic. 



10. Poa triflora Gilib. Exerc. Phyt. 2: 531. 1792. 

 Poa serotina Ehrh. Beitr. 6: 83. 1791, nom. nud. 

 Type locality: Europe. 



