— 281 — 



Phragmites communis 

 Equisetum limosum . . 

 Anemone nemorosa . . 



A 

 5 

 14 



B 



G 



D 



4 



Points . . 



diageic 

 epigeic 



388 1G9 117 224 



318 147 105 109 

 70 22 16 115 



Table III A shows the composition of the vegetation of this lo- 

 cality. The soil is mud, not peat. Mosses are little frequent, only 

 on a few spots, mostly near the somewhat higher terrain more 

 inside, some Hypna and a few Sphagna grow. 



The spot is moist, yet normally not covered with water. The 

 easy drainage makes the soil less sour here than in the interior of 

 the island. Agrostis canina is here found in the form with nu- 

 merous epigeous runners, while subterranean wandering is insigni- 

 ficant, in wet summers the different species of Car ex are luxuriantly 

 flowering, and Agrostis has a modest, vegetative existence. In 

 dry years the Carices do not thrive, while Agrostis dominates and 

 is richly flowering. 



While A shows the composition of the vegetation of the south- 

 western point, B of Table III gives us a picture of the vege- 

 tation a few meters farther to the east. The southern coast is here 

 protected by the stone-reef, whose vegetation is illustrated in 

 Table I. Though this spot is situated a little higher than the lo- 

 cality A, it is nevertheless moister and especially more sour, owing 

 to the more difficult drainage. The soil is densely covered with 

 mosses, especially Polytrichia but also many Sphagna. Juncus 

 filiformis is here the dominating plant. The vegetation has, as 

 far as concerns the vascular plants, the same growth-forms as the 

 former locality, but Juncus filiformis contributes to make the 

 aspect still more xeromorphous, corresponding to the sourer and 

 for this reason physiologically drier soil. 



Where Agrostis canina is growing in Polytrichum it has 

 subterranean runners. In Sphagnum, the subterranean shoots of 

 Agrostis as a rule soon strive up to the light and do not form 

 runners. 



In the other parts of the island there is a well marked dif- 

 ference between the western, higher part and the eastern, lower 

 part. In the west the terrain soon rises some few decimeters and 

 become more dry. In the eastern part the terrain is everywhere 

 low and humid, as it only very slowly rises towards the north. 



