182 



this plant is remarkably abundant on „Gammel Manø% 

 which is almost covered by it. I would draw attention to^ 

 the fact, that on Manø the leaves of Statice scanica are- | 

 very often invaded by Erysiphe lamprocarpa. \ 



The appearance of the sandhills on the North-Frisian' 

 Islands is the same as that of the sandhills in Jutland and: 

 in both places we find a very small number of species in- 

 comparison with those found on the sandhills in the East- 

 and West-Frisian Islands and in North- and South-Holland.. 

 Then we find even in the sandhill- vegetation a very per- 

 ceptible difference between the northern and the southern; 

 part of the coast from the Scaw to the mouth of the river- 

 Shelde, a difference which is made more conspicuous by 

 comparison with the other elements of the vegetation. A. 

 plant characteristic of the northern part is Lathyrus 7nari- 

 tnmis, which is fairly abundant on the North-Frisian Islands^, 

 especially on Sylt; it is furthermore common- along the coast 

 of Jutland particularly to the north, where the chalk reaches 

 the surface of the earth. • In the southern part Lathynis^ 

 maritimus is only found in one place, namely Spiekerooge.. 



Bogs proper so called and meadows with a boggy 

 ground virtually do not exist on the North-Frisian Islands;: 

 they are partly washed away by the sea, partly covered by 

 the sandhills or at all events much covered with sand, but 

 the vegetation in the sandy valleys and flats between the 

 sandhills proves to us the fact, that they have existed here.. 

 The vegetation in these valleys and' flats is very rich in; 

 species Avhen taking into account the limited area and the- 

 unceasing destroying action- of the sand; the abundance of 

 species in this locality only proves that we have here to> 

 do with the scanty remainder of far-stretching bogs and! 

 heaths. On Amrum Ave find these vestiges especially on; 

 the southern side between the lighthouse and Stenodde,< 

 where even Narthecium ossifragum is as abundant as in the- 

 bogs of West-Jutland.- South of the fight-house Ave find 

 a few low and wet sandhill-valleys in which a great many 

 interesting plants grow. The sandhill-flats on the contrary 



