206 University of California Publications in Botany [VOL. 9 



Knob, Placer County, C. F. Sonne, July 18, 1897 ; Mt. Tallac, Tahoe, 

 9,650 feet, Hall and Chandler 4624; Mt. Warren, Tuolumne County, 

 Congdon, August 24, 1898 ; Lundy Trail, Yosemite, 12,000 feet, Cong- 

 don, August 21, 1894; Cathedral Peak, Yosemite, 9,500 feet, Smiley 

 814; Kaiser Peak, Fresno County, 10,200 feet, Smiley 644; Farewell 

 Gap at timber line, Coville and Funston 1747 ; summit of Mt. Dana, 

 Yosemite, Chesnut and Drew, July 17, 1889 ; mountains near Little 

 Kern River, Tulare County, 9-10,000 feet, Purpus 1819; Farewell 

 Gap, Tulare County, 10,600 feet, Purpus 5229; Milestone Plateau, 

 Kaweah Peaks region, Tulare County, Dudley 2457; Olancha Moun- 

 tain, 11,500 feet, Hall and Babcock 5229. 



3. Arabis Drummondii Gray, Proc. Am. Acad., vol. 6, p. 187. 



1863. 



Turritis stricta Graham, Edinb. New Phil. Jour., 1820, p. 350. 1829. 

 Streptanthus angustifolius Nutt., in T. and G., Fl., vol. 1, p. 76. 1838. 

 Arabis oxyphylla Greene, Pitt., vol. 4, p. 196. 1900. 

 Arabis pratincola Greene, Rep. nov. spe., vol. 5, p. 244. 1908. 



Type locality. Rocky Mountains. 



Range. California east to Colorado and northward to British 

 Columbia and Alberta. 



Zone. Canadian. 



Specimens examined. Luther's Pass, near Lake Tahoe, 7,800 feet, 

 Abrams 4763; Spooner, Douglas County, 2,155 m., Baker 1149; 

 Bloody Canon, Mono County, Congdon, August 14, 1898. 



The relationship of this perplexing species to somewhat similar 

 forms in eastern North America is discussed by Fernald 107 who gives 

 as the range of the var. connexa, (Greene) Fernald, Colorado to Wash- 

 ington and in eastern Quebec, a range common to a very considerable 

 percentage of the floras of the Rockies and the Northwest Coast. 



4. Arabis brachycarpa Britton, Mem. Torr. Bot. Club, vol. 5, p. 



174. 1894. 



Turritis Irachycarpa T. and G., Fl., vol. 1, p. 79. 1838. 

 Arabis confinis Wats., Proc. Am. Acad., vol. 22, p. 466. 1887. 



Type locality. "Fort Gratiot, Michigan, and shore of Lake 

 Superior. ' ' 



Range. British Columbia to Quebec, south to New Brunswick, 

 New York, Illinois, Colorado, and California (Sierra on the east 

 slope). 



