PIPER FLORA OP THE STATE OF WASHINGTON. 133" 



I 

 Specimens examined: Sunnyside, Cotton 381; Douglas County, SpiUman, May, 1896; 

 Scott, Leckenhy; near Eltopia, Cotton 1019. 

 Zonal distribution: Upper Sonoran. 



18. Poa ampla Merrill, Rhodora 4: 145. 1902. 

 Poa laevicidmis Williams, Bot. Gaz. 36: 55. 1903. 



Type locality: Steptoe, Washington. Collected by G. R. Vasey. 



Range: 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, SpiUman, May, 

 1896; Pullman, Piper 1755; Elmer 173. 



Zonal distribution: Arid Transition. 



19. Poa brachyglossa Piper, Proc. Biol. Soc. Wash. 18: 145. 1905. 



Type locality: Douglas County, Washington. Collected by Sandberg & Leiberg. 



Range: Washington to Nevada and California. 



Specimens examined: Wenas, Griffiths cfc Cotton 80; Prosser, Griffiths cfe Cotton 1; 

 Steamboat Rock, Griffiths & Cotton 432; Ephrata, Griffiths & Cotton 484; Brewster, Grif- 

 fiths & Cotton 260, 264; Condons Ferry, Griffiths cfe Cotton 421; Grand Coulee, Griffiths cfc 

 Cotton 449; Coulee City, Piper 3916, 3917, 3918; Cold Creek, Cotton 402; Colville Reserva- 

 tion, Griffiths cfe Cotton 401, 374, 396; Cow Creek, Griffiths cfe Cotton 512, 536, 518, 548; Wawar- 

 wai. Piper 3955, 4127. 



Zonal distribution: Arid Transition and Upper Sonoran. 



20. Poa nevadensis Vasey, Bull. Torr. Club 11: 66. 1883. 

 Type locality: Arizona, according to the type specimen. 

 Range: Washington to Arizona. 



Specimens examined: Bingen, Suksdorf 2^\. 

 Zonal distribufion: 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. Circ. 9: 6. 1899. 



Type locality: Lewiston, Idaho. 



Range: British Columbia to Oregon and Idaho. 



Specimens examined: Wenache Mountains, Griffiths cfe Cotton 115; Wenas, Griffiths & 

 Cotton 66, 99; Chelan, Griffiths cfe Cotton 170, 173; Stehekin, Griffiths cfe Cotton 208; Con- 

 conully, Griffiths cfe Cotton 305; Olympic Mountains, Elmer 1929; Washtucna, Cotton 979; 

 Waitsburg, Horner 501; Steptoe, Vasey 8, 13, 7, 11, 14, 67; Rock Creek, Co«on 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 

 huckleyana 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 locality: "On Mt. Hood, Oregon." Collected by Howeil . 



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 locality: Mount Stuart, Washington. Collected by Elmer. 



Specimens examined: Mount Stuart, EJlmer 1148; Yakima Region, Tweedy in 1882. 

 Zonal distribution: Arctic. 



