THE FLORA OF NORTH AMERICA. 39 
New or less known species of Acrocarpous Mosses from North America and 
Europe, 1896. 
European and North American Bryinee, 1896—’98. 
Genera of European and North American Bryinex, 1897. 
Mousses recoltées an Alabama, 1898. 
Musci in J. Macoun, Catalogue of Canadian Plants, 1892. 
European and North American Polytrichacew, 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 Bryinex, 1905. 
Johan Nordal Fischer Wille was born at Skjolden Haabdl, 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. Heis a prominent phycologist, and has 
published considerably, but rather little that refers specially to 
American botany for instance: 
New Forms of Green Algze, 1899. 
Studien iiber Chlorophyceen, 1901. 
Algologiska notiser, 1903. 
Johan Ivar 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 
Eyo, Finland. He is specialist on parasitic Fungi. The following 
publications contain some North American species. 
Mycologische Notizen, 1900. 
Uredinese nove, 1901. 
Garl 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 species of Leptochilus section Bolbitis, 1904. 
Index Filicum, 1905. 
_b. ScANDINAVIAN-AMERICANS. 
August Gustaf Eisen was born at Stockholm, Sweden, the 2nd 
of August 1849, received his degree of Ph. D. in 1872 and became 
