224 GOTE TURESSON 
number of individuals much taller than any of those of series no. 34. 
It would be difficult to understand why this should be the case were 
it not that the genoty- 
pical constitution of 
the plants differed in 
the two series. When 
it is remembered that 
the series, as well as 
the different plants of 
each series, grow un- 
der almost identical 
conditions of culture, 
little doubt remains as 
Fig. 4. Succisa pratensis f. nana. Plant to theleft to the hereditary na- 
10 cm. high. Torekov 1919. 
ture of the differen- 
ces seen between the plants in these two series, as well as of the 
differences between these salt meadow series and the inland series 
(no. 118). 
The differences in height between the plants in series nos. 34 and 
Fig. 5. Succisa pratensis. Behaviour of a dwarf series (no. 35) 
when cultivated. 
35 may probable be accounted for when the nature of the two origi- 
nal habitats is considered. No. 34 comes from a very sterile salt mea- 
dow, while no. 35 comes from a much less extreme salt meadow, 
