PIPER FLORA OF THE STATE OF WASHINGTON. 293 



Specimens examined: Klickitat River, Flett 1142 in part; Mount Stuart, Elmer 1223 

 (?); North Yakima, Steinweg; Sprague, Sandberg cfc Leiberg 202; Lincoln County, Hen- 

 derson 2387; Medical Lake, Sandberg cfc Leiberg 50; Spokane County, Sulcsdorf 237 ; Crab 

 Creek, Suksdorf 238; Spokane Valley, Lyall in 1861; Spokane, Piper- 2950; St. John, 

 Piper 2792; Mount Adams, Cotton 1533. 



Zonal distribution: Arid Transition and Upper Sonoran. 



4. Arabis glabra (L.) Bernh. Syst. Verz. Erf. 195. 1800. 

 Turritis glabra L. Sp. PI. 2: 666. 1753. 



Arabis perfoliata Lam. Eneyc. 1: 219. 1783. 



Turritis macrocarpa Nutt.; Torr. & Gr. Fl. 1 : 78. 1838. 



Type locality: Europe. 



Range : British Columbia to New England southward to California, Colorado, and New 

 Jersey. Europe. Asia. 



Specimens examined: Clallam County, Elmer 2694; Nisqually Valley, Allen, June 11, 

 1894; Klickitat River, Flett 1140; Rock Island, Henderson; Sprague, Sandberg <fc Leiberg 

 143; without locality, Vasey in 1889; Pullman, Piper 1472; Elmer 844; Clarks Springs, 

 Kreager 110. 



Zonal distribution: Transition. 



5. Arabis furcata S. Wats. Proc. Am. Acad. 17: 362. 1882. 



Type locauty : " Bluffs of the Columbia River near the mouth of Hood River," Oregon. 

 Collected by Howell. 



Range: Wa.shington and Oregon. 



Specimens examined: Atanum River, Henderson, August, 1892; Mount Adams, Suks- 

 dorf; Howell; Henderson 58; without locality, Brandegee 625. 



6. Arabis hirsuta Scop. Fl. Cam. ed. 2. 2: 30. 1772. 

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

 Type locality: Carniolia. 



Range: Alaska to Labrador, southward to New Mexico and Virginia. Asia. Europe. 



Specimens examined: Fairhavon, Piper, July, 1897; Semiamoo Bay, Lyall in 1858; 

 Admiralty Head, Piper, April, 1898; Silverton, Bouck 20a; Skokomish Valley, Kincaid, 

 May, 1892; Tacoma, Flett, April, 1896; Nisqually Valley, Allen, June, 1894; Klickitat 

 River, Flett 1138; Coppei River, Horner 80; Almota, Piper, May 11, 1901; without locality, 

 Oeyer 565. 



Zonal distribution : Transition. 



When growing in den.se shade, the plants are often nearly glabrous. This form is A. 

 hirsuta glabrata Torr. & Gr.a 



7. Arabis holboellii Hornem. Fl. Dan. 11:5. pi. 1879. 1827. 

 Arabis re^ro/racta Graham, Edinb. New Phil. Journ. 1829: 344. 1829. 

 Type locality: "In rupibus Insulac Disco ad Jacobshavn detexit." 

 Range: Washington and Colorado to British America. Greenland. 



Specimens examined: Wenache, Whited, May 28, 1898, 39; Ellensburg, WUtedZVZ, 379; 

 Piper 2707; Lower Cascades, Suksdorf, May 30, 1886; Klickitat River, Suksdorf, May 18, 

 1884; North Yakima, Henderson 2395; Sprague, Sandberg & Leiberg 139; Ritzville, Sand- 

 berg d; Leiberg 15S; Douglas County, (SpiZZman, 2630; Pine City, Piper 2427; Spokane , Piper 

 2822, 2690; Spokane Valley, Lyall in 1861; Mount Carlton, Kreager 288; Blue Mountains, 

 Horner 274 in part; Pullman, Elmer 207; without locality, Vasey in 1889. 



Zonal distribution: Arid Transition. 



7a. Arabis holboellii patula (Graham) S. Wats, in Gray, Syn. Fl. 1': 164. 1895. 

 Turntis patula Graham, Edinb. New Phil. Journ. 1829: 350. 1829. 

 Arabis Columbiana Macoun, Cat. Canad. PI. 2: 304. 1890. 



oFl. 1:80. 1838. 



