CATALOGUE OP CANADIAN PLANTS. 227 



Burgess.) Vicinity of Hamilton, Ont. (Logie.) Gravelly shore of 

 Lake Superior, at Port Arthur, Ont. (Burgess.) Nelson Eiver, Kee- 

 watin. (R. Bell.) Moose Mountain, Assiniboia. (J. M. Macaun.) Sand 

 Creek, Kootanie Valley, Eocky Mountains. (Dawson.) Cotoau de 

 Missouri; abundant on the Saskatchewan, and northward to Lake 

 Athabasca; very common in wet places and ditches, Vancouver Island. 

 {Macoun.) Lake Winnipeg to the Eocky Mountains. {Hooker, Fl.) 

 Eed Eiver, Man., 182'7. (Douglas) 



We have vars. Hallii and erecta from the praii-ie region, but they 

 may be only transient forms of the species, and not good varieties. 



(2872.) P. stenantha, Trin.; Hook., Fl. II., 247. 

 lestuca nervosa, Hook., Fl. II., 251. (?) 

 Sitka, and Ounalashka. (Rothr. Alask.) Nootka Sound, west coast 

 of Vancouver Island. (Hooker, Fl.) On the beds of snow slides on the 

 higher Selkirk Mountains in Soger's Pass, B.C. (Macoun.) 



(2873.) P. sub-aristata, Scribner. 



On the summits of the higher Eocky Mountains, from Canmore 

 westward to the Columbia. (Macoun.) 



(2874.) P. tenujflora, Nutt. ; Gray, Proced. Am. Acad. VIII., 409 

 Atropis tenuiflora, Thurber, Bot. Calif. II., 310. 

 An exceedingly valuable grass, especially in the foot-hills of the 

 Eocky Mountains and throughout British Columbia. One of the 

 " Bunch Grasses.'' In Its numerous unrecognized varieties it extends 

 from Brandon westward through the whole prairie region, especially 

 to the south, and appears again west of the Eocky Mountains, where 

 it is the chief pasture grass, and forms part of the natural hay in 

 northern British Columbia. On Vancouver Island it is abundant, 

 from the searcoast to the snow-line, and hence is essentially the native 

 pasturage grass of the Pacific coast. 



Var. Oregona, Vasey, Cat. Grasses U.S. 85, (1885.) 

 This variety has only been detected along the coast of Vancouver 

 Island, from Victoria, to Nanaimo. 



(2875.) P. TRiviALis, Linn. (Eough-Stalked Meadow Grass.) 



Introduced in ballast at Eichibucto, N.B. (Fowler, Gat.) A number 



of forms of this fine grass were abundant in the wet pastures at, and 



around, Victoria, Vancouver Island; doubtless introduced. (Macoun.) 



We have still a number of undetermined forms of Foa, some of 



