56 GEOLOGICAL SURVEY OF CANADA. 



6O. CAPSELLA, Vent. (SHEPHERD'S PURSE.) 

 (197.) C. Bursa-pastoris, Moench. Gray, Manual, 73. 



Tlilaspi Burfia-pastoris, Linn. Pursh., 435. 



An introduced weed that is found in profusion wherever there is cul- 

 tivation from the Atlantic to the Pacific. South Greenland. (Hook. 

 Arct. PI.} 



(198.) C. divaricata, Walp. 



Hi/mi"itololius divaricatu*-, Nutt. Torr. & Gray, Fl. I., 117. 

 H. flrfctus, Nutt. Macoun's C 1 at., No. 186. 



Near Oregon Jack's, above Spence's Bridge, B.C., 1875. 



61. THLASPl, Tourn. (PENNY-CRESS.) 



(199.) T. arvense, Linn. Mithridatc Mustard. 



Naturalized from Europe. Abundant in many parts of Quebec; 

 scarce in Ontario ; but a real pest in Manitoba and around all the 

 Hudson Bay Co. Posts in the North-west Territoiy. This weed- has 

 attracted much attention already in Manitoba. 



(200.) T. alpestre, Linn. Hook. Fl. I., 58. Torr. & Gray, Fl. I., 114. 



T. montanum, Hook. Fl. I., 58. Torr. & Gray, Fl. I., 113. 

 T. cochleariforme, DC. Hook. Fl. I., 58. Trr. & Gray, Fl. I., 113. 

 Shores of the Arctic Sea to the westward and eastward of the Mac- 

 kenzie .River, (franklin Back.} 

 



62. SMELOWSKIA, C. A. Meyer. 



(201.) S. calycina, C. A. Meyer. 



ITutcMmia calycimi, Desv. Hook. Fl. I., 58. Torr. & Gray Fl. I., 114. 



On the Eocky Mountains, Lat. 52-57. (J)rummond.) Kocky Moun- 

 tains, in the Bow Eiver Pass. (Bourgeou.) Summit of South Koo- 

 tanie Pass. (Dawson.} Kotzebuo Sound and Cape Kurzenstern. 

 (Rothr. AlasL] 



63. LEPIDIUM, Linn. (PEPPER-WORT.) 



(202.) L. sativum, Linn. Pepper-grass. 



Escaped from cultivation. On waste heaps, Ste. Anne des Monts, 

 Gaspe, Q. Frequent close to old Fort Garry, Winnipeg, Man. 



