366 University of California Publications in Botany [VOL. y 



This variety, which differs from the species in the narrower bracts 

 of the involucre, is said by Dr. Greene (Fl. Fran., p. 382) to be present 

 in the mountains of Plumas County. 



4. Aster yosemitanus Greene, Fl. Fran., p. 383. 1897. 



A. adscendens var. yosemitanus Gray, Syn. Fl., vol. 1, pt. 2, p. 191, 1884. 



Type locality. "Sierra Nevada, from Summit to the Yosemite 

 Valley." 



Range. Central Sierra Nevada; perhaps extending to Tulare 

 County. 



Zone. Transition and Canadian. 



Specimens examined. Near Glen Alpine, Tahoe, Miss K. Chand- 

 ler, August-September, 1904; Cascade Lake, Tahoe, 6,400 feet, Hall 

 8812 ; Crescent Lake, Mariposa County, 7-8,000 feet, Congdon, August 

 23, 1889 ; meadows along Little Kern River, Tulare County, 9,400 feet, 

 Purpus 2089 ; Tioga Road near Dark Hole, 7,700 feet. Smiley 879. 



5. Aster Fremont! Gray, Syn. FL, vol. 1, pt. 2, p. 191. 1884. 



A. adscendens var. Fremonti T. and G., Fl. N. Am., vol. 2, p. 503. 1843. 

 A. Durbrowi Eastwood, Proc. Calif. Acad. Ill, vol. 2, p. 293. 1902. 



Type locality. Not given ; collected by Fremont in the Wind River 

 Mountains, Wyoming. 



Range. Rocky Mountains from Montana to Colorado, west to the 

 Pacific Coast. 



Zone. Transition and Canadian. 



Specimens examined. Summit Valley, 7,500 feet, Pringle, Sep- 

 tember 22, 1882; Old Cisco, Placer County, grassy flats along Yuba 

 River, 5,700 feet, Hall 8757; above Donner Lake, meadows along the 

 creek, C. F. Sonne, August, 1897 ; Bloody Canon, Mono Bounty, 

 Chesnut and Drew, July 26, 1889 ; Red Rock meadow, Tulare County, 

 8,700 feet, H. M. and G. R. Hall, 8398. 



6. Aster occidentalis Nutt., in T. and G., Fl. N. Am., vol. 2, p. 164. 



1841. 



Type locality. "By the margins of muddy ponds in the Rocky 

 Mountains, seven thousand feet above the level of the sea." 



Range. Washington to California, east to Idaho and Nevada. 



Zone. Arid Transition and above, even to above timber line as 

 a depauperate form. 



