CATALOGUE OF CANADIAN PLANTS. 201 



Dominion of Canada. In the eastern provinces there are both the 

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

 tains and British Columbia, especially on Vancouver Island, the indi- 

 genous variety is the predominant or only one. 



Yar. ALBA, Yasey, Cat. Grasses, U. S. 47, (1885.) 



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

 A. decumbens, Muhl. Gram. 68. 



Naturalized in pastures and wet meadows, especially eastward. 

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

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

 Greenland. (Lange.) 



695. POLYPOCON, Desf. (BEARD-GRASS.) 



(2773.) P. MONSPELIENSIS, Desf.; Gray, Man. Ed. V., 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, Boland. 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 lalifolium, E. Br. ; Hook., Fl. II., 238. 



Vilfa arundinacea, Trin. Diss. I. 



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

 eon Strait. (R. Bell.) Nottingham Island, Hudson Bay. (Mackenzie.) 

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

 of the Arctic sea. (JEfooker, FL) Port Kennedy, Lancaster Sound. 

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

 Bay. (Dr. Rae.) Greenland. (Lange.) 



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



Colpodium latifolium, ft. Kuiith. (?) 



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



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

 Arctic coast. (John Murdoch.) 



