CATALOGUE OP CANADIAN PLANTS. 207 



(2792.) D. rubescens, Vasey, C:it. Grasses, U. S. 51, (1885.) 



Calamar/roslis rubescens, Buckl. Proced. Phil. Acad., 92, (1862.) 

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

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



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

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

 Sitka. {Bongard vide Hooker.) 



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



Calamuyrostis sylmtka, DC. ; Macoun, Cat. No. 2137. 

 C. purpurascens, R. Br. : Hook., Fl. 11., 240, in part. 



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

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

 gravelly ^-lopes through tho Eocky Mountains to Eoger's Pass, in the 

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

 Eiver, lat. 62°, Pelly B:mks, lat. 62", and Dease Eiver, lat. 59°, N.W.T., 

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

 Eocky Mountains. (Hooker, Fl.) 



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



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

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

 bia Valley. (Macoun.) South Kootanie Pass, Eocky Mountains, 1883. 

 (JDawson.) 



(2796.) D. borealis. 



An imperfectly characterized species, having the general appearance 

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

 Bulletin Torrey Botanical Club, Vol. XV., 48. It is indicated as a 

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

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

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

 With Dr. Vasey'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 B. Aleutica, but the specimens are very 

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

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



