PIPER FLORA OF THE STATE OF WASHINGTON. 297 



5. E-oripa cui'visiliqua (Hook.) Besscy, Mem. Torr. Cluh 5: 1(J9. 1894. 

 Sisijmbriutii ciirvisiliqua Hook. Fl. Bor. Am. 1: 61. 1830. 

 Nasturtium curvisiliqua Nutt; Torr. & Gr. Fl. 1: 73. 1838. 

 Nasturtium curvisiliqua nuttallii S. Wats, in Gray, Syn. Fl. 1 : 148. 1895. 



Type locality: "Common on the Northwest coast of America, lat. 47°-48°, in sandy 

 soils, near streams." Collected by Douglas. 



Range: British Columbia to W3^oming and Lower California. 



Specimens examined: Montesano, HeUer 3852; .Seattle, Piper 1840; Tacoma, Fhit 36; 

 Skamania County, Snlcsdoif 517; Falcon Valley, Suksdorf^ld, HJOO; Bingen, SulsthrfZm] ; 

 Skokomisli River, Piper in 1890; Ellensburg, Whited 674; Kalama, Piper, October 31, 1901 ; 

 Roslyn, Whited 1205; Spokane, Deivart, July 15, 1901; October 11, 1900; Pullman, Elmer 

 819; Pi>r 1474, 1840; Lal-e d- Hull 476; Tumwuter Canyon, Sandherg c& Leiherg 522; 

 Spokane, Kreager 559. 



Zonal distribution: Transition. 



A very variable species divided by Nuttall into four, namely. Nasturtium lijratum, 

 N. polymorphum, N. cernuum, and A', currisi/iqua." If there are good characters to 

 separate these, they remain to ])c pointed out. The type specimen of lyratum has an 

 evident style; that of pohjmorphum is almost obsolete. 



6. Roripa obtusa (Nutt.) Britton, xMem. Torr. Club 5: 169. 1894. 

 Nasturtium ohtusum Nutt.; Torr. & Gr. Fl. 1: 74. 1838. 



Type locality: "Banks of the Mississippi." 



Range: British Columbia to Michigan, California, and Texas. 



Specimens examined: Falcon Valley, Suksdoif 2300; Bingen, Suksdoif 2299, 2353; 

 Lake Chelan, Elmer, September, 1897, Spokane Count}', (S''/A".sy7o/;/'1901. 



The Bingen specimens have been referred to R. tenerrima Greene, but they seem not 

 distinct from R. ohtusa. The species is variable. 



7. Roripa palustris (L.) Besser, Enum. 27. 1822. 

 Sisymbrium amphihium jmlustre L. Sp. PI. 2: 657. 1753. 

 Nasturtium terrestre R. Br. in Ait. Hort. Kew. ed. 2. 4: 110. 1812. 

 Nasturtium palustre DC. Syst. 2: 191. 1821. 



Type locality: Europe. 



Range: Subarctic regions, south to California and North Carolina. Europe. Asia. 

 Specimens examined: Seattle, Piper, July 10, 1895; Lake Union, Su]csd<»f 1903; 

 Colville, Lyall in 1860; Usk, Kreager 3.53; Wenache, Whited. 

 Zonal distribution: Transition. 



8. Roripa pacifica Howell, Fl. N. W. Am. 40. 1897. 

 Roripa elarata Kydbeig, Bull. Torr. Club 29: 235. 1902. 



Nasturtium terrestre occidentale S. Wats, in Gray, Syn. Fl. 1': 148. 1895, not Nasturtium 

 occidentale Greene, Fl. Fran. 268. 1891. 



Type locality: vShuniagin Islands, Alaska. 



Range: Alaska to Oregon. 



Specimens examined: Cascade Mountains, latitude 49°, LyaZ/ in 1858-59; west Klickitat 

 County, Sulcsdorf 519, 721; Peshastin, Sandberg <& Leiberg 509; Waitsburg, Horner 83; 

 Hoquiam, Lamb 1221. 



Zonal distribution: Transition. 



9. Roripa hispida (Desv.) Britton, Mem. Torr. Club 5: 169. 1894. 

 Braclujlohus hispidus Desv. Journ. Bot. 3: 183. 1814. 



Nasturtium terrestre hispidum Fisch. & Mey. Ind. Sem. Ilort. Pctrop. 3: 41. 1837. 

 Nasturtium hispidum DC. Syst. 2: 201. 1821. 

 Type locality: "Habitat in Pennsylvania." 



a Torr. & Gr. Fl. 1 : 73, 74. 1838. 



