PIPER—FLORA OF THE STATE OF WASHINGTON. 591 
Stem leaves lanceolate or lance-oblong. .. ... 11. A. macounii. 
Upper surface of leaves pubescent. 
Pubescence sparse, pilose... 2.222.222 0. 12. A. aspera. 
Pubescence dense, short .........-........ 13. A. mollis. 
Leaves subentire, rarely lanceolate. 
Herbage white-tomentose................0.0.. 2... 14. A. cana. 
Herbage glabrous or nearly so............- 2.2... 15, A. longifolia. 
1. Arnica discoidea Benth. Pl. Hartw. 319. 1849. 
Arnica cordifolia eradiata Gray, Syn. FI]. 12: 381. 1884. 
Type Loca.ity: Monterey, California. 
Rance: British Columbia to California. 
SPECIMENS EXAMINED: Falcon Valley, Suksdorf 1617, 565. 
2. Arnica cordifolia Hook. Fl. Bor. Am. 1: 331. 1833. 
Arnica macrophylla Nutt. Trans. Am. Phil. Soc. 7: 407. 1841. 
Type Locauity: “ Alpine woods of the Rocky Mountains on the east side.”” Collected by 
Drummond. 
Rance: 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, Henderson, June 11, 1892; 
Spokane, Piper, May 16, 1896; Hangman Creek, Sandberg & Leiberg 42; Kamiak Butte, 
Moore, June 4, 1893; Piper, July 20, 1899; without locality, Vasey 535; Lake Kalispel, 
Kreager 351. 
ZONAL DISTRIBUTION: Arid Transition and Canadian. 
3. Arnica gracilis Rydberg, Bull. Torr. Club 24: 297. 1897. 
Arnica multiflora Greene, Pittonia 4: 162. 1900. 
TYPE LocaLity: Spanish Peaks, Montana. 
Rance: Washington to Montana. 
SPECIMENS EXAMINED: Baldy Peak, Lamb 1306; Mount Steele, Piper 2203; Loomis, 
Elmer, August, 1879; Nason Creek, Sandberg & Leiberg 682; Mount Adams, Suksdorf, Sep- 
tember 17, 1883. 
4. Arnica latifolia Bong. Mem. Acad. St. Petersb. VI. 2: 147. 1832. 
Arnica menziesii Hook. Fl. Bor. Am. 1: 331. 1833. 
TYPE LocaLity: Sitka. 
Rance: Alaska to Oregon and Colorado. 
SPECIMENS EXAMINED: Olympic Mountains, Piper 2205, 1072; Cascade Mountains, 49°, 
Lyall; Mount Rainier, Piper 2143 and August, 1895; Flett 247: Mount Stuart, Elmer 
1165; Mount Adams, Henderson, August 10, 1892; Suksdorf 195, Flett 1080; upper Nis- 
qually Valley, Allen 138; Silverton, Bouck 106; Yakima Region, Brandegee 913, Skagit 
Pass, Lake & Hull 737; Stevens Pass, Whited 1462. 
ZONAL DISTRIBUTION: Hudsonian. 
5. Arnica betonicaefolia Greene, Pittonia 4: 163. 1900. 
TyPE Locauity: “At 6000 to 7000 feet on slopes of Mount Steele of the Olympic 
Mountains. ”’ 
Rance. 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 prove to be nothing but a 
reduced alpine form of it 
6. Arnica parryi A Gray Am. Nat. 8: 213. 1874. 
Tyre Locauity. Colorado. Collected by Parry. 
