38 ERYTHEA. 



sixteen to the descriptions. The authors describe their work as 

 being one of compilation and analysis for the most part, original 

 matter being inserted only in the cases of the genera Dicranum 

 and Amblystegium, in which the investigations of Barnes, True, and 

 Cheney have been utilized. These keys and descriptions help greatly 

 in providing a substitute for that which is urgently needed, viz., a 

 manual of North American mosses which shall be both critical and 

 complete. 



This work is issued as No. 5 of volume 1 of the science series of 

 the Bulletins of the University of Wisconsin. — W. A. S. 



Index Desmidiacearumcltatiouihts loaipletissimus atque bibliographia. 

 Auctore C. F. O. Nordstedt. Berlin, 1896. 



Professor Nordstedt has signalized the completion of thirty years' 

 critical study of the desmids by presenting to the world the most 

 complete bibliography and index to specific references which we 

 possess of any group of plants. For accomplishing this he possessed 

 especial advantages and fitness, and as a result he hns brought 

 together 1,200 titles, many of them being the small notices and 

 references which so readily escape the general worker. The 

 citations number about 24,000, and show the scope and com- 

 pleteness of the work done. The botanical world is certainly 

 greatly indebted to Professor Nordstedt for his arduous labors in its 

 behalf, and also to the two learned societies whose liberality permitted 

 these results to be rendered accessible in permanent form. — W. A. S. 



SHORT ARTICLES. 



A Correction in Nomenclature. — Ribes montigenum. R. 



nihhigenum McClatchie. Erythea, II, 80, not R. nubigenum Phil., 

 Linnsea, XXVIII, 646. As the specific name previously given the 

 multi-spinose Ribes described from specimens collected on the sum- 

 rait of Mt. San Antonio, proves to have been previously assigned to 

 a Chilean jjlant, it becomes necessary to give it another name. I 

 now propose to call it Ribes montigenum. Dv. Davidson reports 

 it as occurring upon the summit of Mt. San Jacinto also. — A. J. 

 McClatchie. 



