1921] Smiley: Flora of the Sierra Nevada of California 387 



Range. — Pacific Coast from Washington to the southern Sierra 

 Nevada. 



Zone. — Canadian mainly, but occurring in the Transition. 



Specimens examined. — Collins meadow, Fresno County, 7,300 feet, 

 Hall and Chandler 446 ; South Fork of the San Joaquin, 8,600 feet, 

 Hall and Chandler 649. 



6. Arnica latifolia Bong. var. viscidula Gray, Syn. Fl., vol. 1, 



pt. 2, p. 381. 1884. 



Type locality. — "High Sierra Nevada, California." 



Range. — Sierra Nevada, in the northern half; perhaps far to the 

 northward. 



Zone. — Canadian. 



Specimens ea>amined. — Near Soda Springs, 7,100 feet. Smiley 456 ; 

 Donner Pass, Heller 7029 ; Sierra Nevada, 9,000 feet, Pringle, Septem- 

 ber 25, 1882; near Summit, E. L. Greene 414; Frog Lake, Mt. Stan- 

 ford (Castle Peak), Sonne, July, 1890. 



According to Dr. Rydberg (Bull. Torr. Bot. Club, vol. 37, p. 462. 

 1910), the above variety is equivalent to A. diversifolia Green (Pitt., 

 vol. 4, p. 171. 1900), described from "northward slopes of the highest 

 Powder River Mountains, eastern Oregon, at 8,000 to 9,000 feet," and 

 based upon a collection by Cusick (no. 1810), which I have had no 

 opportunity of seeing. The identity is by no means unlikely since 

 many of the species ranging from Alaska through British Columbia 

 and Washington to the Rockies of Wyoming and Colorado, the range 

 of typical A. latifolia Bong., and having peculiar varieties in the 

 Californian region, have the geographical point of incidence of species 

 and variety in the mountains of northeastern Oregon. 



7. Arnica cordifolia Hook., Fl. Bor. Am., vol. 1, p. 331. 1833. 



Type locality. — "Alpine woods of the Rocky Mountains, on the 

 east side, Drummond; and on the west side in mountain woods between 

 the Kettle Falls and Spokane River, and in the Blue Mountains, 

 Douglas." 



Range. — British Columbia to California and New Mexico; in the 

 north eastward at least as far as Lake Superior. 



Zone. — Transition and Canadian, 



Specimens ea>amined. — Mt. Rose, 9,650 feet, Heller 9893 ; Sierra 

 County, Lemmon in 1874; Rubicon Peak, Tahoe, 8,000 feet. Smiley 



