592 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Range: Wiisliiiigtuii and Oregon to Colorado. 



Specimens examined: Olympic Mountains, /'Vt/MoO; Mount Rainier, Pipfr 2159; Goat 

 Mountain, Alien 137; Mount Adams, iS'i/AWo// 5(50; Howell; Loonns, Elmer 582; without 

 locality, Vasey 530; Wenachc Mountains, Cotton 1053. 

 Zonal distribution: Hudsonian. 



7. Arnica pedunculata Rydbeig, Bull. Torr. Club 24: 297. 1897. 

 Arnica monocejihald Rydberg, Mem. N. Y. Bot. Card. 1: -135. 1900. 

 Type locality: Spanish Basin, Montana. 



Range: Washington to Montana. 



Specimens examined: Mountains north of EUonsbuig, Whited 719; Wenache Moun- 

 tains, Whited 1137; Spangle, Piper, May 24, 1901; Rock Lake, Sandherg lic Leiberg 103; 

 Pullman, Piper 1578; Elmer 875; Spokane, Deivarf 



This species is in liabit just like the plant referred to A. fulgens Pursh, but that has 

 horizontal rootstocks, while this has a corniose base covered with pale reddish tomentuni. 

 This difference may not prove constant, and needs further examination in the field. Both 

 the species here mentioned have been referred to A. cdpina Olin, which, in its typical form at 

 least, does not occur in Washington. 



8. Arnica fulgens Pursh, Fl. 2: 527. 1814. 

 Type locality: "On the banks of the Mi.ssouri." 

 Range: British Columbia to Montana and Oregon. 



Specimens examined: Republic, Beattie d- Chapman 204; Goat Mountains, Allen 229; 

 Cascade Mountains to Colville, Lyall in 1800; Wenas and Umtanum creeks, Cotton 1148; 

 Ellensburg, Piper 2677; Whited 542, 649; Spokane, Piper, July 2, 1896; Sprague, Hender- 

 son 2279; Waitsburg, Horner 598; Pullman, Ptper, June 13, 1894. 



Zonal distribction. Arid Transition. 



9. Arnica aurantiaca G I eene, Toireya 1:42. 1901. 



Type locality. "At the head of Keystone Creek, Wallowa Mountains, Oregon, at 

 about 7,000 feet." Collected by Cusick, August, 1900 

 Specimens examined: Goat Mountains, Allen 229 



10. Arnica amplexicaulis Nutt. Trans. Am. Phil. Soc. 7: 408. 1841. 



Ain'ua amplex'ifolinn Rydbeig, Mem. N. Y. Bot Gard. 1: 434. 1900 (February 15). 

 Type locality: "On the rocks of the Wahlamet at the Falls," Oregon. 

 Range: Washington and Oregon. 



Specimens examined: Cape Horn, Ptpii 4962, 5tM)9; Olympic Mountains, Piper 220-i; 

 Flett 818;. Mount Rainier, Allen 285a; Skagit Pass, Lake cfc Hull 738, 



ll..-Amica macounii Greene, Pittonia 4: 160. 1900 (December 8). 



Type locality: " Near Comox, Vancouver Island." 



Specimens examined: Skokomish River, Piper 1074; Coast Mountains, Cooper; Cas- 

 cade Mountains, 49°, Lyall in 1859; White Salmon, Sulcsdoif 28; Lake Cushman, Kincaid, 

 June 15, 1892; Olympic Mountains, Piper, August, 1895; Mount Stuart, Elmer 1194; 

 Bridge Creek, Elmer 672; Lake Wenache, Sandherg & Leiherg 633. 



This .species differs from ^4. amplexicaidis only in its narrow leaves, a character far from 

 constant. 



12. Arnica aspera Greene, Ottawa Nat. 15: 281. 1902. 

 Type locality: iviount R.-inier. Collected by Greene. 

 Specimens examined: Mount Rainier, Greene, August 20, 1889. 



This species is closely allied to the Alaskan ^1. ehaniisKonis Less., but the pubescence is 

 much harsher. 



13. Arnica mollis llorjk. FI. Bor. Am. 1: 231. 1839. 

 Type locality: "Alpine rivuk'ts of tiie Rocky Mountains." 

 Range: British Columbia to Quebec, south Calil'oruia, and Colorado. 



