CATALOGUE OF CANADIAN PLANTS. 201 



Dominion of Canada. In the eastern provinces there ai-e both the 

 introduced and indigenous forms, but westward in the Eocky Moun- 

 tains and British Columbia, especiallj' on Vancouver Island, the indi- 

 genous variety is the predominant or only one. 



Var. ALBA, Vasey, Cat. Grasses, U. S. 47, (1885.) 

 A. alba, Linn. ; Pursli, Fl. I., 64 ; Hook., FI. II., 239. 

 A. decumberu, Muhl. Gram. 68. 



Naturalized in pastures and wet meadows, especiallj- eastward. 

 This and the preceding are invaluable for pasture and permanent mea- 

 dow land, and are the Bed Top and Herd's Grass of the agriculturalists. 

 Greenland. (Lar^ge.) 



695. POLYPOCON, Desf. BEARD-GRASS.) 



(2773.) P. MoNSPELiENSis, Desf; Gray, Man. Ed. Y., 612. 



Waste heaps around Victoria, especially at the head of James Bay, 

 Vancouver Island. (Fletcher. Macoun.) Introduced; 



<2774.) P. LiTTORALis, Smith ; Bot. Calif II.. 270, 

 P.fugax, BolanJ. Cat. .34. 

 Eefuse heaps at the head of James Bay, Victoria, Vancouver Island. 

 {Macoun.) Introduced. 



696. ARCTACROSTIS, Criseb. Ledeb. Fl. Eoss. IV., 434. 



(2775.) A. latifolia, Ledeb. Fl. Eoss. IV., 434. 



Colpodium tatifolium, R. Br. ; Hook., Fl. II., 238. 



Vilfa arundinacea, Trin. Diss. I. 

 Cape Chudleigh, Cape Prince of "Wales, and Mansfield Island, Hud- 

 son Strait. (i2. Bell.) Nottingham Island, Hudson Bay. (Mackenzie.) 

 Arctic sea-coast and islands; Hudson Baj-; and Bear Lake, to the shores 

 of the Arctic sea. (Hooker, Fl.) Fort Kennedy, Lancaster Sound. 

 (Br. Walker.) Between Fort Churchill, and Cape Lady Pelly, Hudson 

 Bay. (Dr. Bae.) Greenland. (Lange.) 



Var. AlaskensiS, Vasey, Cat. Grasses, U. S. 48, (1885.) 



Colpodium latifohum, X Kunth. (?) 



C. arundinaceum, Hook., Fl. II., 238. (?) 

 Kotzebue Sound, and Arctic coast. (Bothr. Alask.) Point Barrow, 

 Arctic coast. (John Murdoch.) 



