250 GEOLOGICAL SURVEY OP CANADA. 



(McGill Coll. Herb.') Islands in Rice Lake and along the river Trent at 

 Crow Bay; also, Lake Isaac and Red Bay, Lake Huron. (Macoun.) 

 Vicinity of Hamilton, Ont. {Logic.} Niagara Falls and along the 

 Detroit River. (Maclagan.) Near London, along the Thames. 

 (Burgess.) Not uncommon throughout the prairie region and extend- 

 ing westward to the Pacific. (Macoun.) From Lake Huron to the 

 Arctic Circle and from Hudson Bay to the Pacific. (Hooker.) 



3O2. GAILLARDIA, Four^eroux. 



(1169.) C. aristata, Pursh. 



O. tricolor, Lam. Hook. FL L, 315. 



Common on dry soils from the eastern part of Manitoba to the Rocky 

 Mountains and in the dry interior of British Columbia. The variety 

 /?. of Hooker has been collected in the Rock3 r Mountains by Dr. Dawson. 



The form from the Foot Hills of the Rocky Mountains has very large 

 flowers often over two inches across, the rays are 3 r ellow and nearly 

 all the leaves are entire. Another form has a very woolly involucre 

 and nearly all the leaves deeply pinnatified. The three forms are 

 limited as follows : 



(1) Flowers large, rays deep yellow and with a long limb, leaves 

 nearly all entire. 



(2) This form has also large flowers, but the rays have a tinge of 

 purple at the base and the outer bracts are long and taper pointed. 



(3) In this the rays are quite short and involucre and upper part of 

 the peduncle quite woolly, nearly all the leaves are more or less 

 pinnatifid. This form has a purplish disk and is always of small size. 



303. ACTINELLA, Pers. 

 (1170.) A. acaulis, Nutt. 



Galardia acaulis, Pursh. Fl. II., 743. 



Dry gravelly soil, prairie region. West Butte, on a dry hill, 49th 

 parallel ; Fossil Coulee, Milk River Ridge. (Dawson.} On the Missouri 

 Coteau, 49th parallel. (Burgess.) 



(1171.) A. Richardsonii, Nutt. 



Picradenia Richardsonii, Hook. Fl. I., 317. 



Dry gravelly hillsides in the prairie region. About Carlton on 

 the Saskatchewan. (Drummond.) On ridges west of Moose Moun- 



