268 GEOLOGICAL SURVEY OF CANADA. 



(1247.) S. hydrophilus, Nutt. 



.In water or very wet ground, especially in brackish water, Montana 

 to British Columbia. (Gray.') 



319. CACALIA, Linn. (INDIAN PLANTAIN.) 

 (1248) C. atriplicifolia, Linn. 



Senecio atriplicifolius, Hook. Fl. L, 332. 



Canada. (Cleghorn vide Hooker.) Moist woodland, western Ontario. 

 (Ton. & Gray.} Not collected recently. 



(1249.) C. tuberosa, Nutt. , 



Marsh at the head of Chicken Bay, Lake Huron, Bruce Peninsula. 

 (Macoun.) 



Excluded Species. 



Cacalia suaveolens, Linn, reported from Windsor, N.S., is Erechtites 

 hieracifolia, Eaf. 



320. TETRADYMI A, DC. 



(1250.) T. canescens, DC. 



Hills and plains, along with Artemisia tridentata, N. Wyoming and 

 British Columbia. (Gray.) 



321. Arctium, Linn. (BURDOCK.) 



(1251.) A. Lap pa, Linn. Common Burdock. 



Lappa major, Gasrtn. Torr. & Gray Fl. II., 463. 



L. officinalis, All. var. major, Gray, Manual, page 275. Macoun's Cat., 

 No. 1071. 



Naturalized throughout the settled parts of the country and becoming 

 a pest on vacant lots in towns and cities. In the country places it is 

 seen in too great profusion about farm houses. 



Var. tomentosum, Gray. 



Collected at Morrison's Mill, Fredericton ; also, abundant at Eich- 

 mond, Carleton Co., N.B. ( Vroom.) 



