1921] Smiley: Flora of the Sierra Nevada of California 113 



Mr. K. K. Mackenzie considers our Californian plant to be 

 specifically distinct from C. filifolia Nutt. and has accordingly de- 

 scribed it as C. exserta (Bull. Torr. Bot. Club, vol. 42, p. 620. 1915), 

 an evaluation of its divergent characters in which I am unable to 

 concur. 



3. Carex Breweri Boott, 111. Car., vol. 4, p. 142, t. 455. 1867. 

 Type locality. "California, on Mount Shasta, 7,000-10,000 ft. in 



dry volcanic soil." Brewer 1422. 



Range. Sierra Nevada and mountains of northern California, 

 north to Mt. Hood. 



Zone. Arctic-alpine, rarely lower. 



Specimens examined. Dick's Peak, Tahoe, just below summit, 

 10,000 feet, Smiley 434 ; Mt. Dana, Congdon, August 27, 1895 ; Eliza- 

 beth Lake meadow, Yosemite, 9,800 feet, Smiley 798 ; Sawtooth Peak, 

 12,000 feet, Hall and Babcock 5680 ; Mt. Dana, Bolander in 1866. 



4. Carex nigricans C. A. Meyer, Mem. Acad. St. Petersb., vol. 1, 



p. 210, t. 7. 1831. 



Type locality. "Habitat in Unalaschka. " 



Range. Alaska to California and Colorado. East Asia? 



Zone. Hudsonian. 



Specimens examined. Lake Lucile, Tahoe, 8,300, Hall and Chand- 

 ler 4664; Devil's Basin, Eldorado County, 8,300 feet, Brainerd, July 

 18, 1897; summit of Rush Creek Divide, east of Minarets, Mariposa 

 County, Congdon, August 21, 1899. 



5. Carex simulata Mackenzie, Bull. Torr. Bot. Club, vol. 34, p. 



604. 1907. 



Type locality. "Wyoming: Chug Creek, Albany County." A. 

 Nelson 7316. 



Range. Washington to California, east to Montana and New 

 Mexico. 



Zone. Canadian. 



Specimens examined. Eldorado County, bogs near Echo Post- 

 office, 5,800 feet, Brainerd, July 12, 1897; east slope Sonora Pass, 

 8,000 feet, Brewer 1865. 



6. Carex vernacula Bailey, Bull. Torr. Bot. Club, vol. 20, p. 417. 



1893. 



Type locality. Not given. 



Range. Washington to California and east to Utah, perhaps to 

 Colorado. 



