198 University of California Publications in Botany [VOL. 9 



Specimen examined. Rocky peak on Truckee River, Placer 

 County, C. F. Sonne, June, 1887, and July, 1886. 



2. DRABA 



Annuals or biennials 6 inehes-1 foot high 1. D. stenoloba 



Perennials: dwarf alpines. 

 Leaf margins revolute. 



Leaves distinctly keeled and fascicled at the tips of the caudex branches 



2. D. oligosperma 



Leaves scarcely carinate, broader and more closely imbricated 



3. D. glacialis 



Leaf margins flat. 



Flowers yellow; stigmas on an evident style. 



Pods twisted, usually pubescent; style short and stout 4. D. Lemmoni 



Pods straight, glabrous; style slender 5. D. eurycarpa 



Flowers white; stigma sessile 6. D. Breweri 



1. Draba stenoloba Ledeb., Fl. Ross., vol. 1, p. 154. 1841. 



Type locality. "Hab. in ins. Unalaschka. " 



Range. Aleutian Islands to California and Colorado. 



Zone. Canadian. 



Specimens examined. Near Summit, Greene 392; Slide Mountain, 

 Washoe County, Nevada, 8,200 feet, Heller 10956; Summit, Jones 

 2568; Mt. Tallac, Tahoe, meadow on west slope, 8,500 feet, Smiley 

 372a; Snow Flat, Yosemite, 8,700 feet, Hall and Babcock 3631; Mt. 

 Lyell, 9,000 feet, Hall and Babcock 3553; soda springs, Tuolumne 

 River, Congdon, August 15, 1894; Peregoy's, above Yosemite, A. Gray 

 in 1872 ; Upper San Joaquin, Congdon, August 19, 1895 ; near Dinkey 

 Creek, Fresno County, 7,500 feet, Hall and Chandler 396 ; South Lake, 

 Inyo County, A. Davidson 2727; Cloud's Rest, Chesnut and Drew, 

 July 13, 1889 ; trail between Mineral King and Farewell Gap, Tulare 

 County, Coville and Funston 1568 ; Hockett meadows, Tulare County, 

 8,500 feet, Hall and Babcock, 5625; near Kokops Creek, Kaweah 

 Peaks, Tulare County, Dudley 2413. 



2. Draba oligosperma Hook., Fl. Bor. Am., vol. 1, p. 51. 1830. 



Type locality. "Summit of limestone hill, Mackenzie River, lat. 

 68." 



Range. British Columbia to California and in the Rockies of 

 Montana and northwestern "Wyoming. 



Zone. Arctic-alpine. 



Specimens examined. Castle Peak near the highest point, Heller, 

 August 3, 1903; Mt. Lola, Lemmon 1275; Mt. Stanford (Castle Peak), 



