THE MOSSES OF ALASKA 347 



Of the species and varieties here described as new only one, Hypnujn 

 plesiostramineum, may possibly be identical with one of Mr. Williams's 

 new species, H. amblyphyllum. 



It should also be added that Mr. Williams's list contains 115 species 

 not found in our list, so that at present the total number of mosses 

 unquestionably shown to be Alaskan or of the Bering Sea islands is 

 about 350. 



Note 2 (p. 326). — In a recent paper in the Journal of Botany, vol. 

 39, pp. 339-341, Mr. E. S. Salmon points out that Bartramiopsis 

 lescurii has the same leaf structure as Lyellia crispa, and he suggests 

 placing it in this genus. But Bartramiopsis differs from Lyellia by 

 its small, erect, symmetrical, not angular and macrostomate capsule, 

 and it seems preferable to keep it as a distinct genus. 



Note 3 (p. 343). — A preliminary diagnosis of this moss has been 

 published by Mr. Renauld in Bryologist, iv, p. 65. It is perhaps the 

 same species as H. amblyphyllum Williams, in Bull. N. Y. Bot. 

 Garden, 11, p. 139. 



June, 1902. 



