302 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
2. Sisymbrium altissimum L. Sp. Pl. 2: 659. 1753, TUMBLING MUSTARD. 
Type cocauity: ‘Habitat in Italia, Gallia, Siberia.” 
SPECIMENS EXAMINED: Whatcom County, Gardner 416; Pullman, Piper 3513; Wawa- 
wai, Piper, May 31, 1903. 
3. Sisymbrium thalianum (L.) Gay, Ann. Sci. Nat. I. 7: 399. 1826. 
Aralbis thaliana L. Sp. Pl. 2: 665. 1753. 
Type LocaLiry: European. 
SPECIMENS EXAMINED: Tacoma, Fett, May, 1899. 
4. Sisymbrium canescens Nutt. Gen. 2: 68. 1818. 
Tyre Locaity: “From Virginia to Georgia.” 
Rance: Washington to Saskatchewan, Florida, and California. 
SPECIMENS EXAMINED: Yakima County, Henderson 2379; Waitsburg, Horner 77; with- 
out locality, Vasey in 1889. ; 
5. Sisymbrium sophia L. Sp. Pl. 2: 659. 1753. 
TyPE LOCALITY: European. 
SPECIMENS EXAMINED: Pullman, Piper 3511; Wawawai, Piper 2871; Waitsburg, Horner 
599. 
6. Sisymbrium incisum Engelm. in A. Gray, Pl. Fendl. 8. 1849. 
Type Locauity: ‘Santa Fe Creek and Mora River,”” New Mexico. 
Rance: Washington and Manitoba to California and New Mexico. 
SPECIMENS EXAMINED: Ellensburg, Piper, May 21, 1897; Blue Mountains, Horner 67; 
Wenache Mountains, Cotton 1286. 
6a. Sisymbrium incisum filipes A. Gray, Pl. Fendl. 8. 1849. 
Sisymbrium longrpedicellatum Fourn. Sisymb. 59. 1865. 
Sophia flipes Heller, Bull. Torr. Club 24: 311. 1897. 
Type Loca.ity: ‘‘Clearwater,” Idaho. Collected by Spalding. 
Rance: 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, Kreager 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 & Leiberg 
101; Walla Walla, Mrs. Anderson in 1884; Wawawai, Piper 1477. 
ZONAL DISTRIBUTION: Upper Sonoran and Arid Transition. 
7. Sisymbrium hartwegianum Fourn. Thése 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. 
Tyre vocauity: “Crescit in imperio mexicano.”’ 
Rance: British Columbia and Alberta to Mexico. 
SPECIMENS EXAMINED: Wenache, Whited 50; Charleston, Piper, June 21, 1895; Pasco, 
Piper 2996; Ritzville, Sandberg & Leiberg 161; Morgans Ferry, Suksdorf 242; Spokane 
Valley, Lyall in 1861; Myers Falls, Kreager; Coulee City, Piper 3879, 3880; Republic, 
Beattie & 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. 
