PIPER—FLORA OF THE STATE OF WASHINGTON. 297 
5. Roripa curvisiliqua (Hook.) Bessey, Mem. Torr. Club 5: 169. 1894. 
Sisymbrium curvisiliqua Hook. F]. 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 Locauity: ‘‘Common on the Northwest coast of America, lat. 47°-48°,in sandy 
soils, near streams.” Collected by Douglas. 
Rance: British Columbia to Wyoming and Lower California. 
SPECIMENS EXAMINED: Montesano, eller 3852; Seattle, Piper 1840; Tacoma, Flett 36; 
Skamania County, Suksdorf 517; Falcon Valley, Suksdorf'576, 1900; Bingen, Suksdorf 2361 ; 
Skokomish River, Piper in 1890; Ellensburg, Whited 674; Kalama, Piper, October 31,1901; 
Roslyn, Whited 1205; Spokane, Dewart, July 15, 1901; October 11, 1900; Pullman, Emer 
819; Piper 1474, 1840; Lake & Hull 476; Tumwater Canyon, Sandberg d& Leiberg 522; 
Spokane, Kreager 559. 
ZONAL DISTRIBUTION: Transition. 
A very variable species divided by Nuttall into four, namely, Nasturtium lyratum, 
N. polymorphum, N. cernuum, and N. curvisiliqua.c If there are good characters to 
separate these, they remain to be pointed out. The type specimen of lyratum has an 
evident style; that of polymorphum is almost obsolete. 
6. Roripa obtusa (Nutt.) Britton, Mem. Torr. Club 5: 169. 1894. 
Nasturtium obtusum Nutt.; Torr, & Gr, Fl. 1: 74. 1888. 
Tyre Locauity: ‘ Banks of the Mississippi.” 
Rance: British Columbia to Michigan, California, and Texas. 
SPECIMENS EXAMINED: Falcon Valley, Suksdorf 2300; Bingen, Suksdorf 2299, 2353; 
Lake Chelan, Elmer, September, 1897, Spokane County, Suksdorf 1901. 
The Bingen specimens have been referred to A. tenerrima Greene, but they seem not 
distinct from #?. obtusa. The species is variable. 
( 
7. Roripa palustris (L.) Besser, Enum. 27. 1822. 
Sisymbrium amphibium palustre L. Sp. Pl. 2: 657. 1753. 
Nasturtium terresire R. Br. in Ait. Hort. Kew. ed. 2. 4: 110. 1812. 
Nasturtium palustre DC. Syst. 2: 191. 1821. 
Type LocaLity: Europe. 
-RaNnGE: Subarctic regions, south to California and North Carolina. Europe. Asia. 
SPECIMENS EXAMINED: Seattle, Piper, July 10, 1895; Lake Union, .Suksdorf 1903; 
Colville, Lyall in 1860; Usk, Kreager 353; Wenache, Whited. 
ZONAL DISTRIBUTION: Transition. 
8. Roripa pacifica Howell, Fl. N. W. Am. 40. 1897. 
Roripa clavata Rydberg, Bull. Torr. Club 29: 235. 1902. 
Nasturtium terrestre occidentale 5. Wats. in Gray, Syn. FI]. 1': 148. 1895, not Nasturtium 
occidentale Greene, F]. Fran. 268. 1891. 
TypPE LocaLity: Shumagin Islands, Alaska. 
Rance: Alaska to Oregon. 
SPECIMENS EXAMINED: Cascade Mountains, latitude 49°, Lyall in 1858-59; west Klickitat 
County, Suksdorf 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. 
Brachylobus hispidus Desy. Journ. Bot. 3: 183. 1814. 
Nasturtium terrestre hispidum Fisch. & Mey. Ind. Sem. Hort. Petrop. 3: 41. 1837. 
Nasturtium hispidum DC, Syst. 2: 201, 1821. 
Tyre Locacity: ‘Habitat in Pennsylvania.” 
aTorr. & Gr. Fl. 1: 73, 74. 1888. 
