397 



Here is neither stone nor solid rock in any known depth, no 

 more is any clay found here. The surface is uneven from 

 little undulations and hillocks, and the sand is so loose that 

 the foot sinks into it. It is thinly, but evenly, covered by Festuca 

 rubra V. arenaria, Carex incurva, Chamaenerium latifolium 

 and Salix glauca. The three firstnamed plants commonly grow 



Fig. 20. Windworn D}-yas on stony plain. Klitdalen. (From photo, by 



Chr. Kruuse). 



in rows of a length of up to 2 m after the direction of the 

 rhizomes, which lie in a depth of from 5 to 10 cm. The covering 

 with sand is great, Chamaetierium and Salix only rise 2 — 6 cm 

 above the sand, hardly anything but leaves is seen, seldom 

 flower and fruit, never parts of stems. Carex incurva is 5 — 

 7 cm high, has curved leaves and, here and there, sheaves. 

 Festuca is 10 — 15 cm high and has many sheaves. The whole 

 is decidedly a purely æolian formation. 



