294 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Type locality: "The seeds of this species were gathered in Captain FraniiHn's expedi- 

 tion at Hudson Bay, in Canada and in the Rocky Mountains." 

 Range: British Columbia and Washington to Hudson Bay. 

 Specimens examined: Green River Hot Springs, Pijper 544. 



8. Arabis atrorubens Greene, Erythea 1 : 223. 1893. 



Arabis ntrifJora Suksdorf, Deutsch. Bot. Monatss. 16: 211. 1899. 



Type locality: Khckitat County, Washington. Colk'cted hy Suksdorf. 



Range: Eastern Washington. 



Specimens examined: West Khckitat County, Suksdorf 210.5; W'enache, Whited 67, 

 1531; Simcoe Mountains, Howell, June, 1879; Darhng Mountains, Fleft 1137; Khckitat 

 Hills, Gorman, April, 1895; Wenache Mountains, Cotton 1290. 



9. Arabis perennans S. Wats. Proc. Am. Acad. 22: 467. 1887. 



Type locality: From northern Nevada and Utah to Arizona and the San Bernardino 

 Mountains in California." 



Range: Washington to California and Arizona. 

 Specimens examined: Without locality, Vasey in 1889. 



10. Arabis sparsifiora Nutt.; Torr. & Gr. Fl. 1: 81. 1838. 

 Arabis arcuata subviUosa S. Wats, in Gray, Syn. Fl. 1^: 164. 1895. 



Type locality: " Forests of the Rocky Mountains, towards the sources of the Oregon." 



Range: Washington and Idaho to California and Nevada. 



Specimens examined: Ellensburg, Piper, May 21, 1897; Clealum, WJiiied 367; Mount 

 Cleman, Henderson 2395; banks of the Columbia, Dour/Zrt.s in 1829; Colville, Lf/o// in 1861; 

 Rock Creek, Sandberg & Leiberg 97; Spokane, Piper 2821; Pullman, Hull 471; Piper 

 1471, 1812, 1811; Elmer 88; without locality, Vasey in 1889. 



Zonal distribution: Arid Transition. 



There is considerable doubt as to the identity of Nuttall's species and it may not be our 

 plant. The latter is unciuestionably the subspecies subvillosa of Watson. 



10a. Arabis sparsifiora secunda (Howell). 



Arabis secunda Howell, Erythea 3: 33. 1895 (February). 



Arabis arcuata secunda Robinson in Gray, Syn. Fl. 1^: 164. 1895 (October). 



Type locality': Mount Adams, Washington. Collected by Howell. 



Range: Eastern Washington. 



Specimens examined: Mount Adams, Howell 1487; west Klickitat County, Sulcsdorf 

 240, 241: Larm River, Suksdorf 97; Upper Yakima River, Lyall in 1860; Wenache, 

 WJnted 1031. 



11. Arabis bolanderi S. Wats. Proc. Am. Acad. 22: 467. 1887. 

 Type locality: " Yosemite Valley or Mono Pass," California. 

 Range: W^ashington to California. 



Specimens examined: Without locality, Brandegee 632. 



12. Arabis puberula Nutt.; Torr. & Gr. Fl. 1: 82. 18-38. 

 Arahlscaiusctns^VLtt.; Torr.&Gr. Fl. 1: 83. 1838. 

 Arabis tenuis Greene, Pittonia 4: 189. 1901. 



Type locality: "Forests of the Blue Mountains of Oregon." Collected by Nuttall. 



Range: Washington, Oregon, and Idaho. 



Specimens examined: Mount Cleman, Henderson 2389; White Salmon, Suksdorf, 

 July, 1881; Ellensburg, Whited 2707; Piper, July 9, 1897; Tampico, Flett 1125; Wenache, 

 Whited, April, 1900; Blue Mountains, i?or7ier 274; Coulee City, Piper 3848; west Klickitat 

 County, Suksdorf 15. 



Zonal distribution: Upper Sonoran and Arid Transition. 



