THE FLORA OF NORTH AMERICA. 39 



New or less known species of Acrocai-pous Mosses from North America and 

 Europe, 1896. 



European and Nortli American BryineiB, 1896 — '98. 



Genera of European and North American Bryinese, i897. 



Mousses recoltees an Alabama, 1898. 



Musci in J. Macoun, Catalogue of Canadian Plants, 1892. 



European and North American Poli/trichacece, 1894. 



Notes sur un Hypopterygium in Canada, 1899. 



Addition to the North American and European Bryology, 1900. 



Bemerkungen iiber Nordamericanische Laubmoose, 1903. 



New North American Bryinea;, 1905. 



Johan cHordal Jischer Wille was born at Skj olden Haabol, Nor- 

 way, the 28th of October, 1858, received his degree of Ph. D. 

 in 1885, became amanuensis at the Natural History Museum 

 at Stockholm in 1883, professor at Stockholm in 1886, and 

 professor at the University and director of the Botanical Garden 

 of Christiania in 1893. He is a prominent phycologist, and has 

 published considerably, but rather little that refers specially to 

 American botany for instance: 



New Forms of Green Algse, 1899. 



Studien iiber Chlorophyceen, 1901. 



Algologiska notiser, 1903. 



Johan I'oar Lindroth was born at Sibbo, Nyland, Finland, took 

 his examination for the Ph. D. degree in 1903 and has been since 

 1902 teacher of Natural History' at the Forestry Institute at 

 Evo, Finland. He is specialist on parasitic Fungi. The following 

 publications contain some North American species. 



Mycologische Notizen, 1900. 



Uredinese nov£e, 1901. 



Carl Christensen, Ph. Cand., assistant in the Botanical Museum 

 at Copenhagen, is an ardent fern student. He has served the 

 world by issuing his Index Filicum, a work which is to the pterid- 

 ologist what the Kew Index is to the phanerogamic systematist. 

 It is even in many respects superior to the Kew Index, especially 

 in the matter of citing synonyms. As yet, Mr. Christensen has 

 published but little referring to American Botany. Of these the 

 most important are: 



American specie.s of Leptochilus section Bolbitis, 1904. 



Index Filicum, 1905. 



b. Scandinavian- Americans. 

 cAugast Gasiaf Eisen was born at Stockholm, Sweden, the 2ud 

 of August 1849, received his degree of Ph. D. in 1872 and became 



