MEMOIRS OF THE NEW VORK BOTANICAL GARDEN. 1 75 



In running water, up lo an altitude of 2000 m. 



Montana: East Gallatin Swamp, 1895, F/odman, 488; Fridley, 

 1887, Tweedy, 20; Helena, F. D. Kchcy ; Upper Missouri, 1882, 

 Canhy. 



Roripa sinuata (Nutt.) Hitchcock, Spring Fl. Manhattan, 18 [111. 



Fl. 2 : 124] ; A^asturtmm sinuaUim Nutt. ; Torr. «& Gray, Fl. N. 



A. i: 73 [Syn. Fl. i^ : 147; Man. R. M. 24; Bot. Caf. i: 43]. 



On river-bottoms throughout the plain-region, reaching an altitude 

 of a little over 1000 m. 



Montana: Great Falls, 1885, R. S. Williams, 63; Custer Co., 

 1892, Mrs. Light. 



* Roripa calycina (Engelm.) ; Nasttirtimn calyciiniiu Engelm. Trans. 



Am. Phil. Soc. (II.) 12: 184: JC. sijiuatiim calyciniun Wats.; 



Gray, Syn. Fl. i' : J47. 



Nearest related to R. sinuata, but is, according to Engelmann, an 

 annual. It is papillose-puberulent, and has a short ovate pod. 



Montana: Yellowstone, 1854, Haydcn. 



Roripa palustris (L.) Bess. Enum. 27 [111. Fl. 2 : 125] ; Sisymbi-iiun 

 amfhihiiini -palustre L. Sp. PI. 657 ; Nastuj'tium falustre DC. 

 Syst. Veg. 2 : 191 [Man. R. M. 24 ; Bot. Cal. i : 43] ; N. terrestre 

 R. Br. ; Ait. Hort. Kew^ Ed. 2, 4: no [Syn. Fl. i^ : 147]. 

 Rather rare, in w^et places, up to an altitude of 2500 m, 

 Montana: Bridger Mts., 1896, Flodman, ^Sg. 

 Yellowstone Park : 1884, Tzveedy, i8g8. 



Roripa hispida (Desv.) Britton, Mem. Torr. Bot. Club, 5: 169 [111. 



Fl. 2: 125]; Brachylobiis hisfidus Desv. Journ. Bot. 3: 183: 



Nasturtitim faliistre hisfidiim Gra}-, Man, Ed. 2, 30 [Syn. Fl. 



i^: 148; Man. R. M. 24; Bot. Cal. i: 42]. 



In swamps, up to an altitude of 2000 m. 



Montana : Sheep Creek, 1895, Flodman, 487; Great Falls, 1884, 

 F. W. Anderson, jj. 



Roripa curvisiliqua (Hook.) Bessey, Mem. Torr. Bot. Club, 5: 169 

 [111. Fl. 2: 126] ; Sisyinbriiun curvisiliqua Hook. Fl. Bor. Am. 

 I : 61 ; Xasitirtittm curvisiliqua Nutt. ; Torr. & Gray, Fl. N. 

 Am. I : 73, in part [Syn. Fl. i^ : 148 ; Man. R. M. 24 ; Bot. Cal. 

 i: 42]. 



In wet places, at an altitude of 2000-2500 m. 

 Montana : Spanish Basin, June 30 and July i, 1897, Rydberg & 



