-36- 



Science," Vol. IV., pp. 294-374, July 31st, 1902. The eleven plates illus- 

 trating the new species are executed by M. Theriot, in this author's excellent 

 and painstaking style and show microscopic details with accuracy. The list 

 of 280 species of Alaskan mosses enumerated here includes, besides the 

 Harriman collection, previous collections as follows: that of W. H. Dall, 

 in 1867; of the Krause brothers, in 1882 ; of W. G. Wright, in 1891; of James 

 M. Macoun, 1891-2; of B. W. Evermann, in 1892: of C. H. Townsend, in 

 1893-1895 (Expedition of the U. S. S, Albatross); of W. M. Canby, in 1897: 

 of W. H. Evans, in 1897 ; of W. A. Setchell, in 1899; and of F. C. Schrader, 

 in 1899. Of these, 124 are new to Alaska, and 46 are new to science. Of 

 the latter 29 are new species, and 17, new varieties. 



The new species and varieties will be described in successive numbers 

 of The Bryologist as space permits. Three new combinations are made. 

 First, Irichostoimnn affine Schleich., which in Bryol. Eur. stands as a 

 synonym for Rhacomitrium heterostichiim alopeciirum B. S., is written 

 Rhaco7nitriuin heterostichu7fi affijie (Schleich) C. & Th. Then, Atrichu7n 

 Lesciirii James, which Mr. E. S. Salmon had placed under Lyellia, the 

 authors place under Bartramiopsis Lesciirzi QsimQS,) C. & Th. not Kindb. 

 Also Pogo7iatuin M acot^ nil Kindh., becomes Pogonatiim alpimcm Macoiinii 

 C. «& Th. 



A number of species are accompanied by critical notes recording the 

 authors' judgment. Thus Mnium tmduiJi Williams, for reasons stated, 

 is considered rather a subspecies of Miiitun pu7ictatiini. Psilopilii77i 

 Tschuctschicn77i, discussed under P . arctic7t77i Brid,, is discredited as a good 

 species. On this point there appears to the writer ground for difference of 

 judgment. (See The Bryologist, September, 1902.) Incidentally it may 

 also be noted that the authors have preferred to retain the name Psilopiht77i 

 arcticu77i in place of the revised name. Poly trie hu7n Ytikone7ise C. & Th. 

 is under suspicion of being only a form of P. Je7ise7iii Hagen, most of the 

 differentiating characters given being variable in the typical P. Je7tse7iii. 

 Psetidoleskea stenophylla Ren. & Card., for which Dr. Best in his Revision 

 of this genus had substituted P. rigesce7is {y^\\^.)\AvLd\)., is restored, Dr. 

 Best's substitution being shown as untenable. Likewise Brachytheciii77i 

 NovcE-A7iglia: Jaeg. & Sauerb. is restored, the character on which it was 

 recently erected into the new genus BryJmia, the papillose leaves, having 

 proved to be variable. 



There is a short postscript of three notes. The first of these refers to 

 Mr. R. S. Williams' Catalogue of the Bryoph^^tes of the Yukon, which was 

 published in 1901 in the Bulletin of the New York Botanical Garden and 

 which contains 115 species not listed in the present paper. This brings the 

 number of species of mosses now known from Alaska and the Bering Sea 

 Islands up to about 350, not considering a large number of doubtful species 

 mentioned in passing by the authors. 



John M. Holzinger. 



