300 Carl S^ottsberg 



New Amsterdam and west to Masafuera, and 2 species endemic 

 in Juan Fernandez. The second and larger section has 4 Ameri- 

 can and 12 Neo-Zelandic species, and i which is credited to both 

 regions. All the American species are found in southern Chile, 

 2 reach Tierra del Fuego, and one of these goes north to Central 

 America and has a remote station in Masafuera. Of the 12 Neo- 

 Zelandic species, 7 seem to be restricted to New Zealand, i 

 reaches Tasmania and the Philippine Islands, i extends to Tas- 

 mania and Australia, and 2 are more widespread (i being com- 

 mon to Australia, Tasmania, New Zealand, and Macquarie Island, 

 ranging west to New Amsterdam and Kerguelen; the other ex- 

 tending from Auckland and Campbell Island to Australia, Tas- 

 mania, Lord Howe Island, and New Guinea); and finally, 

 U. uncinata of New Zealand and Warikauri is also found in 

 Hawaii, if Dr. Kiikenthal's identification, as expressed in the 

 Pflanzenreich, is correct. 



In the Pacific there is a small group of related species of 

 Carex, three of which recendy have been described by F. B. H. 

 Brown,^'' C. tahitensis from Tahiti, C. Sto\esii from Rapa, C. 

 feani from the Marquesas, C. Rechingeri from Samoa, and C. 

 sandwicensis. To the same assemblage belong two species from 

 New Zealand and the Magellanian C. Darwinii, which is also 

 credited to Warikauri and the subantarctic islands. However, to 

 our present knowledge, these species do not form a closed group; 

 near them are placed a number of Boreal species from the Arctic, 

 North America, Europe, and Asia. It is quite possible that 

 Antarctica is not involved in the history of the Pacific species. 

 Students in plant dispersal will remark that the utricles of 

 Uncinia, with their hooked rhachilla, are well adapted to be 

 transported in birds' plumage, and carriage by wandering ma- 

 rine birds may account for the great range of some species and 



