PIPER FLORA OF THE STATE OF WASHINGTON. 547 



Stems few-lcavcd; iuvoliK-ie a series of equal bracts and a lew short 

 calyeulate ones. 



Flowers white; involucre nearly glabrous 3. If. alhiforum. 



Flowers yellow. 



Heads small, black-hairy 4. //. (jmcile. 



Heads larger; not black-hairy. 

 Involucre densely long-hairy. 



Cauline leaves ample, half-clasping at the broad 



l)ases 5. //. hnglherhe. 



Cauline leaves much reduced 6. //. scoitlcri. 



Involucre with few or no long hairs. 



Leaves densely hirsute 7. II. gri.ttum. 



Leaves nearly smooth 8. //. cyuoglossoldes. 



1. Hieracium columbianum Rydberg, Bull. Torr. Club 28:513. 1901. 

 Type locality: "Priest lliver Valley," Idaho. 



Range: North Idaho and adjacent Washington. 



Specimens examined: Dartford, Ereager, September 12, 1903; Loon Lake, Winston, 

 July 20, 1897; Spokane County, Sulcsdorf 935; Peshastin, Sandberg & Leiberg 510. 

 Zonal distribution: Arid Transition. 



2. Hieracium canadense Michx. Fl. 2: 86. 1803. 

 Type locality: "Ilab. in Canada." 



Range: British Columbia to Nova Scotia, south to Oregon and New Jersey. 

 Specimens examined: Loomis Elmer 570; Pullman Piper, August 5, 1893; Elnttr 307; 

 Spokane Piper, July 26, 1896; Coupeville Gardner 422. 

 Zonal distribution: Arid Transition. 



3. Hieracium albifiorum Hook. Fl. Bor. Am. 1: 298. 1833. 



'i Ilieraciuni Vancouver ianiun Arvet-Touv. Spicil. Ilier. 10. 1874. 



Type locality: "Rocky Mountains north of Smoking River, Lat. 56°." Collected by 

 Urummond. 



Range: British Columbia and Alberta to California and Colorado. 



Specimens examined: Montesano, Heller 3918; Grays Harbor, Wilkes Expedition; 

 Cascade Mountains, latitude 49°, Lyall in 1859; Silverton, Bouck 113; Seattle, Piper 502; 

 Mount Rainier, Piper, August, 1895; upper Niscjually Valley, Allen 11; Skagit Pass, Lake 

 d- Hull, August 24, 1892; Colville, Lyall in 1860; Falcon Valley, Suk.sdoif 427; Nason 

 Creek, Sandberg cE- Leiberg 611; Conconully, Whited 1323; Bridge Creek, Elmer 688, in 

 1897; Tukanon River, Za^-e 742; Mount Carlton, Z/<flf/fr 303; Lake Kalispel, A'/m(/fr 347. 



Zonal distribution: Transition and Canadian. 



4. Hieracium gracile Hook. Fl. Bor. Am. 1: 298. 1833. 

 Hieracium triste gracile A. Gray, Bot. Cal. 1: 441. 1876. 

 Hieracium hookeri Steud. Nom. ed. 2. 1:763. 1840. 

 Hieracium arcticurn Froel.; DC. Prod. 7: 209. 1838. 



Type locality: Rocky Mountains. Collected by Drummoud. 



Range: Alaska to Oregon and Colorado. 



Specimens examined: Cascade Mountains, latitude 49°, Lyall in 1859; Silverton, Bouck 

 116; Mount Rainier, Piper 2155; Allen2m; Mount Adams, 5wt.sfZo// 428; Flett 1082,1398; 

 Stevens Pass, Sandberg & Leiberg 716; Skagit Pass, Lake dc Hull, August 24, 1892; Yakima 

 County, Henderson, August 5, 1892; Wenache Mountains, Elmer 449; Horseshoe Basin, 

 Elmer 726; Blue Mountains, Piper, July, 1896. 



Zonal distribution: Arctic. 



5. Hieracium longiberbe Howell, Fl. N. W. Am. 395. 1901. 



Type locality: "On clilfs along the Columbia river near the Cascades." 

 Range: Oregon and Washington on clifl's in the Columbia Gap. 



