4<i <iEipLO(iI(\M. srK\ KV oi' CANAItA. 



4G. SISYMBRIUM, Linn. iHEDGE-MUSTARO.^ 



(]J0.) S. officinale, Scop. Hedgc-niuslaiil. 



ivn/*'/"'"" ojjirlifnir, I.inn. rmsli, WMi. 



An iiitrt)(liU'o<l and iui8ii;'hlly wood I'uuiid in all oilios, Luwns and 

 villa«i:os (lir()Ui.rlion( (Ontario and tho oastoni proviiicos. 



(^If)!/! S. linifolium, Nnit. 



S.jiiiituHiu, Hook. V\. I., I'll. Maconn's Cal., No. H(i. 



In some abundance alonii: tho Thompson Kivei- l)oU)W Spcncc's 

 Bruigc, B. C, 1875. {^rarotw li- mil.) 



(15?.) S. sophioides, Flseh. Hook. V\. I., <;i. 



S. Sophia var. Eicliards. in Frankl. .Touin., 1(>. 



VorU Factory on Hudson's Bay ; to the shores of the Arctic Sea, wcst^ 

 Nvard ot the Mackenzie llivor. (Hooker.) Along Nelson River ncai- 

 York Factory. (7i. Bell.) Lake Winnipeg. (Bark.) 



(153.) S. Sophia, Linn. Flaxweed. 



Introduced from Kurojje. On the sand bar at the mouth of Magdalen 

 Eiver, Gaspo, 1882. (Maro^m.) Borders of fences near (iuobec. 

 {Brunei.) Montreal. (Mar lagan <& Holmes.) East Street, Prescott, 

 Ont. (Billlm/s.) 



(154.) S. canescens, Xntt. Tansy-mustard. 

 Cardamine (.^) mullipda, Tursh, 440. 

 S. Sophia, Pursh, 440 ; not Linn. 



In the low grounds, Lat. 50°-G0'. {Richardson.) Plentiful about 

 the Saskatchewan and Eed Rivei-.^. {Douglas.) In the Eocky Moun- 

 tains and about Fort Franklin, Lat. 66.° {Drummond.) Very common 

 throughout the prairie region, and extending to Peace Eiver. Common 

 in the dry interior of British Columbia. *S'. incisum, Engelm. is included 

 in the above references. 



Var. brachycarpum, Torr. & Gray Fl. I., 92. 



S. hrachycarpura, Eichards. in Frankl. Jouni., Ki. Hook. Fl. I., 62. 



I take this to be the forest form and the one which is found both 

 East and North. St. Helen's Island, Montreal. {Maclagan.) Whiskey 

 Island, Lake Huron. {J.Bell.) Point Pelee, Lake Erie ; Little Current, 

 Georgian Bay. North shore of Lake Superior at the Pic Eiver, and 

 quite frequent in the mixed forest and prairie to the Eocky Mountains. 



