THE GENOTYPICAL RESPONSE OF THE PLANT 289 
forms differing as to angle of stem, width of leaf, and characters of 
inflorescence has not been determined. The woody coast strip to the 
south, which replaces the sandfields, terminates in Stenshuvud, a hill 
rising 150 m. above sea. The steep slopes towards the sea are covered 
with beech, oak, aspen, ash etc., and Hieracium umbellatum is found 
growing here in the supralittoral and epilittoral belts of the rocky 
beach. A few individuals of the plant were brought home and put 
under culture in 1919 
(list no. 23). The remar- 
kable habitus called for 
another visit to the loca- 
lity and in 1920 the re- 
gion was once more in- 
vestigated and a larger 
collection was made and 
put under culture (list 
nos. 24 and 25; fig. 54). 
Table 20 summarizes the 
results. The remarkable 
width of the leaves, equal- 
ling that of the cliff. 
forms from the west 
coast, is here combined 
with an almost erect 
growth. It is not only 
in this latter character 
that this variety resembles 
the inland variety, but 
also as to the more or 
less contracted inflore- 
scences. The broadness 
of the leaves was not as 
well marked in the natural habitat as it has since become in the cul- 
tures, the plant resembling in this respect the behaviour of the cliff 
form representative of the west coast. The average width of ten leaves 
(the middle ones) on each of the first five individuals of list no. 
24 was ascertained in 1920 before transplanting; these values (in mm.) 
compared with the values obtained from the same plants in culture in 
1921 and 1922 are given here: 
Fig. 54. H. umbellatum. Cult. cliff type from 
Stenshuvud. 
