IRZ/TYBES. OF ICELANDIC VEGETATIOZ 
dE types of the Icelandic vegetation, their floristic composition, 
and their distribution in the various parts of Iceland have been 
treated in a series of works by Chr. Gronlund (1887 and 1884), 
St. Stefansson (1895), Helgi Jönsson (1895, 1900, 1905 and 
1913), C. H. Ostenfeld (1899 and 1905), Th. Thoroddsen (1914), 
and Ingimar Oskarsson (1927). 
In “The Botany of Iceland” 1914, pp. 317—343, Thoroddsen 
gives a general view of the types of Icelandic vegetation, attaching 
to each type a brief discussion of its floristic peculiarities. 
According to this the types of vegetation occurring in Iceland 
are the following: 
1. The Vegetation of the Coast Line. a. Rock vegetation, 
b. fowling cliff vegetation, c. sand strand vegetation, d. salt- 
marsh vegetation. 
The Vegetation of Fresh Water. a. Vegetation of running 
water, b. of lakes and pools. 
3. The Vegetation around Springs (the Dy Vegetation). 
4. The Vegetation around Hot Springs. a. Around hot 
alkaline springs, b. around the solfataras. 
5. The Vegetation on Wet Soil. a. Myri vegetation, b. flöi 
vegetation. 
6. The Vegetation on Rocky Flats. a. On gravelly flats 
(melar), b. stone-covered ridges (holt), c. river gravel (urd), 
d. rocky boulders (hamrar), e. (eyrar), f. clayey flats (flag). 
7. The Vegetation of the Mountain Slopes. Under this 
head come the herb slope and the herb flats. 
8 Psammophilous Vegetations. a. Sand-covered tracts (san- 
dar), b. blown sand (dunes). 
9. The Vegetation of the Lava Streams; in various stages 
of development. 
Do 
