THE FLORA OF NORTH AMERICA. 35 



ago, Jamaica, Panama and Curaqao in 1891—93, and made ex- 

 tensive collections. The following publications are from his hand: 



Erindringer fra Mexico, 1869. 

 St. Croix's Flora, 1S76. 

 Rhizojihofa Mangle L., 1877. 



Rei/nosia Griseb. En hidtil ufuldstandig kjendt Slsegt af RhaniDaceernes Fa- 

 milie, 1877. 



Naturen paa de Dansk-Veetindiske Oer. 1878. 



The Flora of St. Croix and tlie Virgin Islands, 1879. 



Et Besog paa Oen Dominica, 1S80. 



Die Poyale des ostlichen Porto Eico, 1882. 



Porto Rico, 1883. 



Reise in das Innere von Sto. Domingo, 1888. 



Flora of the Bahamas, 1892. 



Supplement til St. Croix's og .lomfruoernes Flora, 1889. 



Botanical Exploration to Cuba, 1S90. 



Die Insel Tobago, 1893. 



Veii Brecher Witirock (See United States and Canada, page 26). 



Carl Emit Hansen Ostenfeld (See Greenland and Arctic America, 

 page 45). 



Carl Fredrik Otto Nordsiedi (See Greenland, page 28). 



William cNiylander was born at Dleaborg, Finland, Jan. 3, 1822, 

 received the degree Ph. Cand. in 1843 and that of M. D. in 1847. 

 He lived in France from 1851 to 1857, when he was appointed 

 professor at the University of Helsingfors, Finland. He returned 

 to France in 1863 and died in Paris the 29th of March, 1899. He 

 was perhaps the most prominent lichenologist of the world and 

 was the author of numerous publications. Those relating to 

 North America are the following: 



Synopsis methodica Lichenum omnium huousque cognitorum, 1858 — '59- 



Collectio lichenum ex insula Cuba, 1866. 



Enumeration des Llchenes recoltes par M. T. Husnot aux Antilles franeaises, 

 1868. 



Circa Pyrenocarpeos in Cuba collectos a C. Wright, 1876. 



Lichenes nonnulli insulse St. Thomas Antillarum, 1880. 



Enumeratio lichenum Freti Behringii, 1888. 



Mexicanas plantas nuper a colletoribus expeditionis scientifica? [together 

 with B. Fournier and E. Bescherell]. 



Llchenes exotici a W. Nylander descripti 1892. 



oA^f/s Gusiaf Lagerheim was born at Stockholm the 18th of Octo- 

 ber, 1860. In 1889 he became conservator at the museum at 



