;{S (jEOi,(V)i(\\i sritVKY i>i' canaua. 



(AVm/k7.) \ iiinily of Montival. {Mcdill ('nil. llcrb.) Common in 

 moist plnc'i's :i( Pivscotl. Out. (liil/iiKjs.) Vicinity ol" C)tt;i\v:t. 

 l^Fhtrhn\ Fl. Ott.) IxiviiTi' (hi Tioup. (v). ; not common, {'/liomas.) 

 Kingston, St. Ciitlinrini's. Cayugn nn.l Maiden, Ont. {MacUujan.) 

 Tho Dawson Route, and llu« second crossing ol' the Souris, Man. 

 (Burge.^s) (Joulais Point, on Lake Superior ; north end of Lake Winni- 

 peg ; Nelson Ivivcr to York Factory and Echimamisli Hiver to Oxf<)rd 

 IIoiKso. {li. Hell.) Winnipeg and Northwe.st Angle Lake of the 

 Woods. {Pairsoii.) Very common along the borders of streams through- 

 out the jirairie region, as well as the margins of ponds. {Mtiroun.) 

 Hschscholt/ ]5ay, Dunalashka; anil Voucon Jlivcr. (Jiotfi. Mask:) 

 (n-eenland. {Hook. Arrt. PI.) 



\:ir hispidum, Plsch i\; Mey. 



NuKluiiiiitii lii:<jti</iiiii, IK'. Torr. iV: (Jiay. l"l. I., 71. jMacniin's ('at., 

 No. 117. 



Vicinity of Ottawa. (Fletcher Fl. Ott.) In the neighboi-hood of 

 London. Ont. (Burgess.) Loav. wet ground ahout New Wcstminstei-, 



n.C. {.Vamiu,.) 



(IIG.) N. amphibium, \l Br. 



Shi/inhrium amphibium, Linn. Pursli. 4 Id. 



In watery places, about Montreal and Lake Huron. (Hooker.) 

 Gregory's Ci-eek, near Montreal, 182L (Holmes.) Beauharnois Co., Q. 

 (McGill Coll. Herb.) In ditches at Ottawa. In ditches along the 

 railway west of Shannonville, also west of Belleville, Ont.; ditches 

 at Fort William, Lake Superior, 1869. (Macoun.) Dartmouth Eiver, 

 Oaspt-, Q. ; L'Orignal, Ont. (J. Bell.) 



(117.) N. trachycarpum, Gray. 



Very abundant on the Cypress Hills, N. W. T., in dried up pools ; 

 also in the bed of Maple and other Creeks north of the Cypress Hills, 

 1880. (Maroiin.) 



(118.) N. curvisiliqua, Nutt. 



Sisymbrium curvisiliqua, Hook. Fl. I., (il. 



N. cemuum & polymorphum, Nutt. Ton-. iS: Giay, FI. I., 74. 



Common on the North-we.st Coast as far north as Lat. 48° in sandy 

 soils, near streams. (Douglas.) Along the Fraser a short distance 

 above New Westminster, B.C.. 1875. (Macoun.) Near Yale. B.C. 

 (Hill.) 



