302 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



2. Sisymbrium altissimiun L. Sp. PI. 2: 659. 175."^. Tumbling mustard. 

 TtlPE ux'ality: "Habitat in Italia, Gallia, Siln'ria." 



Specimens examined: Whatcom County, Gardner 416; Pullman, Piper 3513; Wawa- 

 wai. Piper, May 31, 1903. ^ 



3. Sisymbrium thalianum (L.) Gay, Ann. Sti. Nat. I. 7: 399. 1826. 

 Arabis thdiana L. Sp. PI. 2: 665. 1753. 



Type ixx^aliti': European. 



Specimens examined: Taconia, FltU, May, 18t)9. 



4. Sisymbrium canescens Nutt. Gen. 2: ()8. 1818. 

 Type i>ocauty: "From Virginia to Georgia." 



Range: Washington to Siuskatehewan, Florida, and California. 



Specimens examined: Yakima County, Ilemierson 2379; Wait.sburg, Homer 77; with- 

 out locality, Vasey in 1889. 



6. Sisymbrium sophia L. Sp. PI. 2: 659. 1753. 



Type ixkai.ity: P^un)j)ean. 

 ■ Specimens examined: Pullman, Piper 351 1 ; Wawawai, Piper 2871 ; Waitsburg, Horner 

 599. 



6. Sisymbrium incisum Engolm. in A. Gray, PI. Fendl. 8. 1849. 

 Type ixhality: "Santa Fe Creek and Mora River," New Mexico. 

 I^ange: Wa.shington and Manitoba to California and New Mexico. 



Specimens examined: Kllen-shurg, Piper, May 21, 1897; Blue Mountains, Horner 67; 

 Wenache Mountains, Cotton 1286. • 



6a. Sisymbrium incisum fllipes A. Gray, PI. Fendl. 8. 1849. 



Sisymbrium lomjipedicellatum Fourn. Si.syml). 59. 1865. 



Sophia JUipes Heller, Bull. Torr. Club 24: 311. 1897. 



Type IjOcality: "Clearwater," Idaho. Collected by Spalding. 



Range: British Columbia to Nevada. 



Specimens examined: Ellensburg, Whited 438; North Yakima, Mrs. Steinweg; Flett 

 1129; Tacoma, Flett 51; Pasco, Piper 2972; Hunts Junction, Leckenby, April, 1898; 

 Spokane, Piper, May, 1896; Pullman, Piper 1477; Elmer 842; Almota, Piper, May, 1897; 

 Wawawai, Hull, May, 1892; Piper, May, 1893; Mount Carlton, Krcager 145; Coupeville, 

 Gardner 20; Wenache, Whited 1062, 603; Rattlesnake Mountains, Cotton 364; Sunnyside, 

 Cotton 356; Cascade Mountains to Colville, Lyall in 1860; Rock Lake, Sandberg & Leiherg 

 101; Walla Walla, Mrs. Anderson in 1884; Wawawai, Piper 1477. 



Zonal distribution: Upper Sonoran and Arid Transition. 



7. Sisymbrium hartwegianura Fourn. Th6.sc Crucif. 66. 1865. 



Sisymbrium incisum hartwegianum Wats, in Brewer & Wats. Bot. Cal. 1: 41. 1876. 



? Sisymbrium canescens brevipes Nutt.; Torr. & Gr. Fl. 1: 92. 1838. 



Type locality: "Crescit in imperio mexicano." 



Range: British Columbia and Alberta to Mexico. 



Specimens examined: Wenache, Whited 50; Charleston, Piper, June 21, 1895; Pasco, 

 Piper 2996; Ritzville, Sandberg cfc Leiberg 161; Morgans Ferry, Suksdorf 242; Spokane 

 Valley, Lyall in 1861; Myers Falls, Kreager; Coulee City, Piper 3879, 3880; Republic, 

 Beattie cfc Chapman 2271. 



Zonal distribution: Upper Sonoran. 



The Sisymbrium brachycarpon Richards., in Hooker's Flora, is, in all probability, not that 

 species, but S. hartwegianum, so far as the plant from the "Great Falls of the Columbia" 

 is concerned. 



