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lows: I. A list of 148 endemic species. 2. A list of 38 species common to 

 them and to other parts of South America. 3. A list of 50 species common 

 to them and to the islands of the South Pacific Ocean, including especially 

 New Zealand, Tasmania and Kerguelen Island. 4. A list of 24 species com- 

 mon to them and to Kerguelen Island alone. A comparison of lists 2 and 3 

 impresses the fact that the Magellanic Flora has in fact greater affinities 

 with the Pacific Islands than with the rest of South America. 



Beitr^ege zur Laubmoosflora Ostgrcenlands und der insel Jan Mayen, by 

 P. Dusen, Stockholm, 1899. 



This is a " Bihang till Svenska Vet. Akad. Handlingar, Band 27, Afd. 

 III. No. I." It is in German, and comprises 71 pages of printed matter, and 

 four plates. One of these constitutes the map of the region visited by the 

 Swedish expedition in 1899 led by Dr. A. G. Nathorsf, which covered the 

 east coast of Greenland from about 70° to 75° N. Lat. The first part of the 

 treatise deals principally with the ecological conditions at the 17 stations 

 where the collections reported on were made. In the second part the author 

 enumerates the 134 species collected. The determinations were made by Mr. 

 Dusen, in cooperation with Mr. C. Jensen and Dr. H. W. Arnell, both able 

 students of arctic mosses. For the sake of uniformity the nomenclature 

 adopted is that of Lindberg in " Musci Scandinavici," which is also followed 

 in other reports on arctic explorations. 



While of great interest to American moss students in its entirety, this 

 Ijaper is especially valuable to them by reason of the elaboration of the 

 genus Bryum by Dr. Arnell, including numerous helpful notes on some little 

 known species, illustrative drawings, and five new species. Thus Bryum 

 obtusifolium Lindb. is here for the first time fully described and figured, B. 

 teres Lindb. is illustrated, B. elegajis elongatiim Arnell is described and the 

 following five new species are described and figured: B. sjibiiitidiilmn 

 Arnell, B. Dusenii Arnell, B. inimis Arnell, B. Groenla7idicicvi Arnell and 

 B . Jan-Mayense Arnell. John M. Holzinger. 



Grimmia pachyphylla Leiberg (1893). In his Mossflora of the Magel- 

 lanic Lands in the " Resultats du Voyage du S. Y. Belgica," Mr. Cardot men- 

 tions a Grimmia pachyphylla C. M. Inquiry about this Grimmia. the publi- 

 cation of which must have antedated that of Leiberg's species, resulted in the 

 generous information from Mr. Cardot that Gen. Paris in his " Index Bryol- 

 ogicus" had changed Leiberg's plant to Gri?nmia Leibergii Paris, but that 

 since the publication of this second name of this Idaho moss, Dr. Brotherus 

 had discovered that Carl Mueller's plant is an Andresea. Now the question 

 arose: Should Leiberg's first name be resumed for this Idaho plant, or, 

 should Paris' name stand? Not having access to the "Paris Code" nor to 

 the " Rochester Code of Botanical Nomenclature." I asked the judgment of 

 my friend Dr. G B. Sudworth on this problem. The following is the state- 

 ment of his view: "You have quite a puzzle; but it seems to me perfectly 

 plain. Grimmia pachyphylla C. Mueller (1880-1890) becomes a synonym of 

 Andreasa. Grimmia pachyphylla Leiberg (1893) falls with G. pachyphylla 

 C M. which is preoccupied as a synonym of Andresea. According to the 

 principles of the Paris Code Grimmia Leibergii Paris stands. The Roches- 

 ter Code_ would also hold this name on the ground that G. pachyphylla 

 Leiberg is a homonym and therefore inadmissible. In my judgment the 

 Idaho plant can be maintained only as G. Leibergii Paris." 



Since this is a matter of general interest to moss students the facts above 

 stated are offered for pubhcation. J. M. Holzinger. 



