THE FLORA OP NORTH AMERICA. 25 



and had little effect on botany at large. The "Genera", however, have been of 

 inestimable value, tor no work contains such good and complete descriptions of 

 the genera of the world as this. 



The following work was done by Scandinavians during this period: 



A. United States and Canada. 



Thure Ludtviff Theodor KamUen was born at Herrlunda, 

 Vastero-otland, Sweden, the 9th of November, 1819, graduated at 

 Skara Gj^mnasium, and was for some time a pupil of Elias Fries 

 atUpsala. He emigrated to America in 1813 and settled near 

 Lake Koshkonong, Wis. For twenty j^ears he made collections 

 for the museums at Upsala, Stockholm, Leyden, the British Mu- 

 seum, and the Smithsonian. He was a zoologist as well as a bot- 

 anist, and a great lover of nature. In 18tj7 he became instructor 

 in botany and zoology at Albion College, and in 1883 conservator 

 of the Milwaukee Public Museum. He died the 5th of August, 

 1888. He published very little. The only botanical publication, 

 as far as the writer knows, is the following: 



On the Rapid Disappearance of Wisconsin Wild Flowers, 1876. 



Jacob Georg Agardh, son of C. A. Agardh, was born at Lund, 

 Sweden, the 8th of December, 1813, received his Ph. D. degree in 

 1832, became docent at Lund in 1834,extra-ordinary professor in 

 1817, and professor in 1854, retired in 1879, and died the 1 7th of 

 Januar}^ 1901. He was one of the most prominent phycologists 

 in the world, and specialized in the marine alga^, especialh' the red 

 sea-weeds. He has written little that bears directly on American 

 botany, but his principal work, '"Species, genera et ordines Alga- 

 rum", comprises the whole world, and therefore contains many 

 American plants. The first one given below contains more North 

 American species than exotic ones. The following are from his 

 hand: 



Synopsis generis Lupini, 1835. 



Nya alger frfi.n Mexico, 1847. 



Species, genera et ordines algarum, 1848 -'63. 



Bidrag till kannedom af Gronlands Laminarier och Fucaceer, 1872. 



Till algernas systematik, 1872 — '90. 



Gronlands Floridier och Ulvaceer. 



Nils Johan Anderson was born at Garderum, Sm&land, Swe- 

 den, the 20th of February, 1821, received his Ph. D. degree in 

 1845, was lector at the Gymnasium of Stockholm in 1851 — '53, 

 and director of the Botanical Museum in 1856 — '79. He died 



