PIPER FLORA OF THE STATE OF WASHINGTON, 591 



Stem leavos lanceolate or lanco-oblotig. . .- 11. A. macounii. 



Upper surface of leaves pubescent. 



Pubescence sparse, pilose 12. A. aspera. 



Pubescence dense, short 13. A. mollis. 



Leaves subentire, rarely lanceolate. 



Herbage white-tomentose 14. A. cana. 



Herbage glabrous or nearly so 15. A. longifolia. 



1. Arnica discoidea Benth. PL Hartw. 319. 1849. 

 Arnica cordifolia eradiaia Gray, Syn. Fl. V: 381. 1884. 

 Type locality: Monterey, California. 



Range: British Columbia to California. 



Specimens examined: Falcon Valley, (Sw^s^for/ 1617, 565. 



2. Arnica cordifolia Hook. Fl. Bor. Am. 1: 331. 1833. 

 Arnica macrophylla Nutt. Trans. Am. Phil; Soc. 7: 407^ 1841. 



Type locality: "Alpine woods of the Rocky Mountains on the east side. " Collected by 

 Drummond. 



Range: British Columbia to California and Colorado. 



Specimens examined: Upper Nisqually Valley, Allen 139; Mount Adams, Flett 1103; 

 Clealum, Whited 621; near Wenache, Whited 91, 1101; Eaton, II emlerson, June 11, 1892; 

 Spokane, Piper, May 16, 1896; Hangman Creak, Sandberg d^t Leibercj 42; Kamiak Butte, 

 Moore, June 4, 1893; Piper, July 20, 1899.; witiiout locality, Vaseij 535; Lake Kalispel, 

 Kreager 351 . 



Zonal distribution: Arid Transition and Canadian. 



3. Arnica gracilis Rydberg, Bull. Torn Club 24: 297. 1897. 

 Arnica multijlora Greene, Pittonia 4: 162. 1900. 



Type locality: Spanish Peaks, Montana. 



Range: Washington to Montana. 



Specimens examined: Baldy Peak, Lamb 1306; Mount Steele, Piper 2203; Loomis, 

 Elmer, August, 1879; Nason Creek, Sandberg dc Lnberg ()S2; Mount Adams, Suksdorf, Sep- 

 tember 17, 1883. 



4. Arnica latifolia Bong. Mem. A6ad. St. Petersb. VI. 2: 147. 1832. 

 Arnica menziesii Hook. Fl. Bor. Am. 1: 331. 1833. 



Type locality: Sitka. 



Range: Alaska to Oregon and Colorado. 



Specimens examined: Olympic Mountains, Pi/jcr 2205, 1072, Cascade Mountains, 49°, 

 Lyall; Mount Rainier, Piper 2143 and August, 1895; Flelt 247: Mount Stuart, Klmer 

 1165; Mount Adams, Henderson, August 10, 1892; Suksdorf 195, Flelt 1080, upper Nis- 

 qually Valley, Allen 138; Silverton, Bouck 106; Yakima Region, Brandegec 913, Skagit 

 Pass, Lake cfc Hull 737; Stevens Pass, Whited 1462. 



Zonal distribution: Hudsonian. 



5. Arnica betonicaefolia Greene, Pittonia 4: 163. 1900. 



Type locality; "At 6000 to 7000 feet on slopes of Mount Steele of tiie Olympic 

 Mountains. " 



Range. Olympic Mountains, Washington. 



Specimens examined; Baldy Peak, Lamb 1306, Mount Steele, Piper 2202, Mount 

 Storm King, Lawrence 349. 



Zonal distribution . Arctic. 



This species is closely allied to A. latifolia Bong., and may prov(> to be nothing but a 

 reduced alpine form of it 



6 Arnica parryi A Gray Am. Nat. 8; 213. 1874. 

 Type locality. Colorado. Collected by Parry. 



