CATALOGUE OF CANADIAN PLANTS. 207 



<2'792.) D. rubescens, Vasey, Cat. Grasses, U. S. 51, (1885.) 

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

 Qaite common on burnt slopes ia the Eocky Mountains, from Banff 

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



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

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

 Sitka. (Bongard vide Hooker.) 



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



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

 C. purpurascens, 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 Eocky Mountains to Eoger's Pass, in the 

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

 Eiver, lat. 62°, Pelly Banks, lat. 62", and Dease Eiver, lat. 59°, KW.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. 

 (^Dawson.) 



(2796.) D. borealis. 



An imperfectly characterized species, having the general appeai-ance 

 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 IJ to 2 inches 

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

 at Port 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 D. Aleutica, but the specimens are very 

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

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



