294 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Type localitt: "The seeds of this species were gathered in Captain Frankhn'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, Piper 544. 



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



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



Type locality: Klickitat County, Washington. Collected by Suksdorf. 



Ranoe: Eastern Washington. 



Specimens examined: West Klickitat County, Suksdorf 2105; Wenache, Whited 67, 

 1531; Simcoe Mountains, Hoirrll, June, 1879; Darling Mountains, Flett 1137; Klickitat 

 Hills, Gorman, April, 1895: Wenache Mountains, Cotton 12^1). 



0, Arabis perennans S. Wats. Proc. Ani. Acad. 22: 467. 1887. 



Type ixxality: 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 sparsiflora Nutt.; Torr. & Gr. Fl. 1: 81. 1838. 

 Arabis arcuaia subvillosa S. Wats, in Gray, Syn. Fl. 1': 164. 1895. 



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



Ran(2E: Wa-shington and Idaho to California and Nevada. 



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

 Oeman, Henderson 2395; banks of the Columbia, Douglas in 182^); Colvillc, Lyall in 1861; 

 Ro<'k CVeek, Sandberg cfe Leiberg 97; Spokane, Piper 2821; Pullman, Hull 471; Pij>er 

 1471, 1812,-1811; Elmer 88; without l(H-ality, 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 unquestionably the subspecies subvillosa of Watson. 



10a. Arabis sparsiflora secunda (Howell). 



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



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



TiPE uxjality: Mount Adams, W^ashington. Collected by Howell. 



Range: Eastern Washington. 



Specimens examined: Mount Adams, HoweU 1487; west Klickitat County, Suksdorf 

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

 WhiUd 1031. 



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

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

 Range: Washington to California. 



Specimens examined: Without locality, Brandegee 632. 



12. Arabis puberula Nutt.; Torr. & Gr. Fl. 1: 82. 1838. 

 Arabis canescens ^nit.; 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, Corner 274; Coulee City, Piper 3848; west Klickitat 

 County, Suksdorf 15. 



Zonal distribution: Upper Sonoran and Arid Transition. 



