1906] Contributions to Canadian Botany. 139 



perianth segments. In A. cemuum the leaves are almost flat 

 and more or less keeled. In A. recurvation there is no keel 

 and the channel is rounded as well as the back. The leaves 

 of A~. cemuum are also much wider, the flowers are generally 

 much paler in that species and the perianth segments have an 

 indistinct midvein. A. recurvation is common in the Rocky 

 Mountains and British Columbia. 



Habenaria macrophylla, Goldie. 



This species is much rarer than H. orbiculata with which 

 in recent years it has been confounded. H. orbiculata ranges 

 from the Atlantic to the Pacific and north to Alaska. H. 

 macrophylla has not been found west of Wisconsin. Our 

 specimens are from Newfoundland, 13,771, (B. L. Robinson 

 & H. Schrenk), and Muskoka, Ont., 27,223. (JV. Spread- 

 borough.) Many specimens of both species have been ex- 

 amined by Mr. Oakes Ames ; the spur of H. orbiculata was 

 found to be from 16 to 27 mm. long, while that of H. 

 macrophylla ranged from 32 to 43 mm. in length. The flowers 

 of the latter species are also much larger. 



Salix chlorolepis, Fernald, Rhodora, vn : 186. 



Meadows at the headwaters of Ruisseau au Diable, Mt. 

 Albert, Gasp6, Que. (Collins and Fernald.) 



Salix macrostachya, Nutt. 



Along the Kettle River at Cascade, B.C. In flower, June 

 26th, 1902, No. 68,128. (/. M. Macoun). New to Canada. 



Salix serissima, (Bailey) Fernald, Rhodora, vi : 6. 

 S. lucida, Cat. Can. PI. 11 : 450 in part. 



Mr. Fernald gives no other Canadian localities for this 

 species than " north shore of Lake Superior." Our herbarium 

 specimens are from the mouth of Albany River, James Bay, 

 Hudson Bay, No. 62,628. [W. Spreadborough) ; Salt Lake, 

 Anticosti, Que., No. 24,584. (John Macoun); Gait, Ont , No. 

 63,120. (JV. Herriot) ; Nipigon, Lake Superior, Ont., No. 

 24.583. (John Macoun) ; Severn River, Keewatin, No. 2,028, 

 Beren's River, Man., No. 24,618, and Muskeg Island, Lake 



