CATALOGUE OP CANADIAN PLANTS. 271 



(1261.) C. foliosus, Gray. 



Cardumfoliosus, Hook. Fl. I., 303. 



Cirdumfoliomm, DC. Torr. & Gray Fl. II., 461. Macoun's Cat., No. 

 1063. 

 Prairios of the Eocky Mountains. (Drummond.) South Kootauio 

 Pass, 49th parallel ; also, l^orth Pork of Old Man Elver, Eocky 

 Mountains. (^Dawson.) 



(1262.) C. arvensis, Pursh. Canada Thistle. 



Cardwus arvensis, Smith. Hook. Fl. I., 302. 



Cirsmm arvense, Soop. Gray, Manual, page 274. Macoun's Cat, No. 

 1062. 



Naturalized throughout the country and become a pestilent weed on 

 all badly cultivated farms. Many country roads in Ontario are almost 

 impassable in summer owing to the prevalence of this pest. 



(1263.) C. Hookerianus, Gray. 



Carduus discolor, var. fl. albis, Hook. Fl. I., 302. 

 Upper wooded and sub-alpine region of the Eocky Mountains, north 

 of Lat. 49°. (DougloLfi & Bmirgeau.) At the base of the high lime- 

 stone cliffs at the entrance to Bow Eiver Pass. (Macoun.') 



(1264.) C. edulis, Gray. 



Wet or shady places, along the southern boundary of British 

 Columbia. (^Gray.) 



(1265.) C. Kamtschaticus, Maxim. 



Oirdum Kamtschaticum, Ledeb. DC. Prodr. VI., 644. 

 Atkha, one of the Aleutian Islands. (Gray.) 



324. ONOPORDON, Vaill. (SCOTCH THISTLE.) 



(1266.) O. acanthium, Linn. 



Waste grounds generally escaped from gardens. Pictou, JST. S. 

 (McKay.) Buctouche and Bass Eiver, N.B. Eare. (^Fowler's Cat.) 

 Vicinity of London, Ont. (Burgess.) Vicinity of St. Thomas, Ont. 

 (McGill Goll. Herb.) 



325. SAUSSUREA, DC. 



(126*7.) S. alpina, DC. Hook. PL I., 303, in part. 

 S. monticola, Eichards. Hook. Fl. I., 303. 

 Elevated parts of the Eocky Mountains. (Drummond.) Eastern 



