CATALOGUE OF CANADIAN PLANTS. 207 



(2792.) D. rubescens, Yasey, Cat, Grasses, IT. S. 51, (1885.) 



Calamagrostis rubescens, Buckl. Proced. Phil. Acad., 92, (1862.) 

 Quite common on burnt slopes in the Rocky Mountains, from Banff 

 westward to Roger's Pass, Selkirk Mountains, B.C. (Macoun.) 



/ 

 (2793.) D. Strigosa, Kunth; Yasey, Cat. Grasses U.S. 51, (1885.) 



Calamagrostns strigosa, Bong. ; Hook., Fl. II.,. 241. 

 Sitka. (Bongard vide Hooker.) 



(2794.) D. sylvatica, Kunth; Yasey, Grasses of U. S. 51, (1885.) 



Calamagrostis sylvatica, DC. ; Macoun, Cat. No. 2137. 

 C. purpurascena, R. Br. : Hook., Fl. II., 240, in part. 



Apparently a mountain species, extending far to the north. Old 

 Bow Fort, near Morley, (1879), and very common westward on dry 

 gravelly slopes through the Rocky Mountains to Roger's Pass, in the 

 Selkirks, B.C. (Macoun.) Crow Nest Pass, Rocky Mountains ; Lewes 

 River, lat. 62, Pelly Banks, lat. 62, and Dease River, lat. 59, N.W.T., 

 and B.C. (Dawson.) Bennett's Lake, Lewes R,, B.C. (W. Ogilvie.) 

 Rocky Mountains. (Hooker, Fl.) 



(2795.) D. Suksdorfii, Scribner, Bull. Torr. Club XY., 9. 



This is an uncommon grass on* the burnt ridges covered with Pinus 

 Murrayana at Castle Mountain, Rocky Mountains ; and Donald, Colum- 

 bia Yalley. (Macoun.) South Kootanie Pass, Rocky Mountains, 1883. 

 (Dawson.) 



(2796.) D. borealis. 



An imperfectly characterized species, having the general appearance 

 of D. Lapponica, has been named (by Dr. Yasey) D. Vancouverensis, in 

 Bulletin Torrey Botanical Club, Yol. XY., 48. It is indicated as a 

 " small species, 10 or 12 inches high, with spicate panicle 1J to 2 inches 

 long, approaching D. strigosa, Kunth." It grows plentifully in water 

 at Fort George, James Bay. Collected July 1887. (J. M. Macoun.) 

 With Dr. Yasey's permission I have changed the name to the above, 

 which is more in accordance with the locality where found. 



(2797.) D. Columbiana. 



This species is related to D. Aleutica, but the specimens are very 

 poor and difficult to characterize. Collected at Ta-gish Lake, Lewes 

 River, N.W.T., Sept. 1887, (Dawson.) 



