PIPER—FLORA OF THE STATE OF WASHINGTON. 133 
SPECIMENS EXAMINED: Sunnyside, Cotton 381; Douglas County, Spillman, May, 1896; 
Scott, Leckenby; near Eltopia, Cotton 1019. 
ZONAL DISTRIBUTION: Upper Sonoran. 
18. Poa ampla Merrill, Rhodora 4: 145. 1902. 
Poa laeviculmis Williams, Bot. Gaz. 86: 55. 1903. 
TYPE LocaLiry: Steptoe, Washington. Collected by G. R. Vasey. 
Rance: British Columbia to Idaho and Oregon. 
SPECIMENS EXAMINED: Sprague, Henderson 2224; Sandberg & Leiberg, June, 1893: 
Wawawai, Leckenby 3000; Piper 2567; Spokane, Piper, May, 1897; near North Yakima, 
Henderson, May, 1892; Falcon Valley, Suksdorf 1127; Douglas County, Spillman, May 
1896; Pullman, Piper 1755; Elmer 173. 
ZONAL DISTRIBUTION: Arid Transition. 
19. Poa brachyglossa Piper, Proc. Biol. Soc. Wash. 18: 145. 1905. 
Type LocaLiry: Douglas County, Washington. Collected by Sandberg & Leiberg. 
Rance: Washington to Nevada and California. 
SPECIMENS EXAMINED: Wenas, Griffiths & Cotton 80; Prosser, Griffiths & Cotton 1; 
Steamboat Rock, Griffiths & Cotton 432; Ephrata, Griffiths & Cotton 484; Brewster, Grif- 
fiths & Cotton 260, 264; Condons Ferry, Griffiths & Cotton 421; Grand Coulee, Griffiths 
Cotton 449; Coulee City, Piper 3916, 3917, 3918; Cold Creek, Cotton 402; Colville Reserva- 
tion, Gr iffiths & Cotton 401, 374, 396; Cow Creek, Griffiths & Cotton 512, 536, 518, 548; Wawa- 
wal, Piper 3955, 4127. 
ZONAL DistRiBUTION: Arid Transition and Upper Sonoran. 
20. Poa nevadensis Vasey, Bull. Torr. Club 11: 66. 1883. 
Type LocaLiry: Arizona, according to the type specimen. 
Rance: Washington to Arizona. 
SPECIMENS EXAMINED: Bingen, Suksdorf 2831. 
ZONAL DISTRIBUTION: Upper Sonoran. 
21. Poa sandbergii Vasey, Contr. Nat. Herb. 1: 276. 1893. 
Aira brevifolia Pursh, Fl. 1: 76. 1814, not Poa brevifolia Gaud. 1808. 
Poa incurva Scribn. & Williams, U.S. Dept. Agr. Div. Agrost. Cire. 9: 6. 1899. 
Type Locatiry: Lewiston, Idaho. 
RancGeE: British Columbia to Oregon and Idaho. 
SPECIMENS EXAMINED: Wenache Mountains, Griffiths & Cotton 115; Wenas, Griffiths & 
Cotton 66, 99; Chelan, Griffiths & Cotton 170, 173; Stehekin, Griffiths & Cotton 208; Con- 
conully, Griffiths & Cotton 305; Olympic Mountains, Elmer 1929; Washtucna, Cotton 979; 
Waitsburg, Horner 501; Steptoe, Vasey 8, 13, 7, 11, 14, 67; Rock Creek, Cotton 953; Saint 
Johns, Cotton 963; Olympic Mountains, Piper 1989. 
ZONAL DISTRIBUTION: Mainly Arid Transition. 
All of the Washington specimens that have been called Poa tenuifolia Nutt. or Poa 
buckleyana Nash are referable to P. sandbergii. 
22. Poa paddensis Williams, U.S. Dept. Agr. Div. Agrost. Bull. 17 rev. ed.: 261. 1901. 
Poa purpurascens Vasey, Bot. Gaz, 6: 297. 1881, not Spreng. 1819. 
TyPE Locauity: “On Mt. Hood, Oregon.” Collected by Howell . 
Range: British Columbia to Oregon. 
SPECIMENS EXAMINED: Olympic Mountains, Piper 1915; Flett 831; Elmer 1925, 1927, 
1930; Bridge Creek, Elmer 675; Mount Rainier, Allen 184; Piper 1967; Atanum River, 
Henderson 2244; Mount Adams, Howell 83; Suksdorf 158, 159. 
ZONAL DISTRIBUTION: Arctic. 
23. Poa curtifolia Scribn. U.S. Dept. Agr. Div. Agrost. Circ. 16: 3. 1899. 
Type Loca.ity: Mount Stuart, Washington. Collected by Elmer. 
SPECIMENS EXAMINED: Mount Stuart, Elmer 1148; Yakima Region, Tweedy in 1882. 
ZONAL DISTRIBUTION: Arctic. 
