244 GEOLOGICAL SDRVEY OF CANADA. 



refer to the indigenous form. On arid soil. Saskatchewan. (Drum- 

 mond.) Bank of Moose Jaw Creek, on arid clay. (Macoun.) White 

 Mud River or Frenchman's Creek, 49th parallel. (Dawson.) Abun- 

 dant in the dry interior of British Columbia, along the Thompson 

 River. (Fletcher & Hill.'} 



(1136.) H. petiolaris, Nutt. 



On arid soil along streams in the south-western part of the prairie 

 region, from the Elbow of the South Saskatchewan westward. 

 (Macoun.) Along Belly River. Sandy bank, Wood End on Souris River, 

 49th parallel. (Dawson.) 



(1137.) H. rigidus, Desf. Var. ft. Ton-. & Gray. 

 H. atrorubens, Hook. Fl. I., 312. 



Plains and grassy prairies. Banks of the Saskatchewan as far as 

 Edmonton. (Dnnnmond.) From the Red River to the Rocky Moun- 

 tains, on the 49th parallel. (Dawson.) . Yery common throughout the 

 whole prairie region. (Macoun.) 



(1138.) H. Nuttallii, Ton-. & Gray Fl. II., 324. 



On dry open prairie, often confounded with small forms of the next. 

 South of Battleford and near the Hand Hills. Also, west of Hum 

 boldt Telegraph Station. (Macoun.) Bow River valley at Calgarry. 

 (J! M. Macoun, C. P. E. Coll} Turtle Mountain, 49th Parallel. (Daw- 

 son.) Interior of British Columbia, (Gray. ) 



(1139.) H. giganteus, Linn. 



Grassy thickets and borders of marshes. Vicinity of Hamilton, Ont. 

 (Logic.} Cayuga and Maiden, Ont. (Maclagan.) Common at London, 

 Ont. (Burgess.) Coldstream, Port Colborne, Ont. (McGill. Coil- 

 Serb.) Marshy meadow at Point Edward near Sarnia, also in numer. 

 ous places along the Great Western Railway, between Sarnia and 

 Hamilton. Yery abundant on the prairie region from the Lake of the 

 Woods to the Rocky Mountains, and northward to the forest line. 

 (Macoun.) 



(1140.) H. strumosus, Linn. 



Dry, gravelly soil quite common in Hastings and Northumberland 

 counties, Ont. (Macoun.) Fields around Hamilton, Ont. (Logie.) 

 Strathroy, Ont. (McGill. Coll. Herb.) Yicinity of London, Ont. 

 (Burgess.) A variety of this species was collected somewhere in the 

 North-West by Bourgeau. See Palliser's Report, page 258. Possibly 



