288 GOTE TURESSON ~ 
replace the sandfields at about 3,5 kilometres from the sea. The prost- 
rate dune form is found quite typically 1,5 kilometres from the sea. 
At Torup, due west of Vitemölle and 3,5 kilometres from the coast, the 
woodlands are found to harbour a mixed population. Table 26 (list 
no. 37) tabulates the results of the cultivation of a number of indi- 
viduals from this locality, which have been in culture since 1920. It 
seems more than probable that this collection includes mongrels 
between the prostrate dune form and the erect inland form and their 
segregates. Fig. 52 gives a picture of two extremes and one interme- 
diate plant (as to angle of stem), all three members of this collection. 
The intermediate zone, where the mixed population occurs, is probably 
Fig. 53. Hieracium umbellatum. Cult. mixed population from south of Kivik. 
quite narrow, as cultivated material collected at random at a distance of 
less than 1 kilometre to the west of Torup contains the typical woodland 
variety only. The southern limit of the extensive sandfield area touches 
Kivik, as has been said before, and then the woods begin. Here again 
mixed H. umbellatum populations are found. List no. 36 refers to a col- 
lection of plants made 0,5 kilometre to the south and a little to the west 
of Kivik. Table 25 (fig. 53) gives the result of the cultivation of these 
individuals, which have been in culture since 1920. The table includes 
extremes, as to the angle of stem, as well as intermediates. The width 
of the leaves is on the average greater than in the mixed population 
from Torup, which is probably due to the fact that the H. umbellatum 
form inhabiting the woody coast region to the south of the sandfield 
area is a broad-leaved type to be discussed more fully in the following. 
The extension of the intermediate zone harbouring this multitude of 
