26 SCANDINAVIANS AND 



March 27, 1880. In 1851— '53 he was the botanist of the journey 

 around the world of the Swedish man-of-war Eugenie, on which 

 tour the Galapago Islands were especially studied. Anderson was 

 the most prominent salicologist of his time, and numerous wil- 

 lows from America as well as elsewhere have been described and 

 named by him. The works from his hand that bear on North 

 American botany are the following: 



Salices boreali-americanse, A Synopsis of the American Willows, 1858. 



Monograpbia Salicum hucusque cognitarum, 1867. 



Salicacese in De Candolle's Prodromus, 1868. 



Veit Brecher Witirock was born at Holm, Dalsland, Swe- 

 den, the 5th of May, 1839, received the degree of Ph. D. in 1866, 

 was appointed docent at Upsala the same year^ and professor in 

 1878. The following year he became director of the Botanical 

 Garden at Stockholm. He is a prominent algologist and a spe- 

 cialist on green algee. The following publications refer more or 

 less to American plants: 



Algologiska studier, 1867. 



On the Development and the Systematic Arrangement of the Pithojphoraceae, 

 a new order of jVlgse [all Tropical, some West Indian], 1877. 



Prodromus Oedogoniorum, 1874. 



Sextas Otio Lindherg was born at Stockholm the 29th of 

 March, 1835, received his Ph. D. in 1865, and became professor 

 and director of the Botanical Garden at Helsingfors, Finland, in 

 1865. He died there the 20th of February, 1889. He was one of 

 the most prominent bryologists of the world, and is the author of 

 a new system of arrangement of the genera and species of mosses. 

 Works that bear directly on the North American flora are the fol- 

 lowing: 



Revisio critica iconum in opere Flora Danica muscos illustrantium, 1871. 



Europas ocli Nord-Amerikas hvitmossor, 1882. 



B. Greenland and Arctic America. 



In 1870 began a series of expeditions to Greenland and other 

 parts of Arctic America; but before this time several collections 

 had been sent to Copenhagen by men who had made longer or 

 shorter stays in Greenland. The most important of these were 

 made by 



Captain Norman, 



Dr. L. Schiodte, who was a phj'^sician at Ivigtut in 1867, 

 and by 



