486 
Syncotylous Races. 
preferably with seedlings which did not differ much from 
those of the main culture. These have, however, prac- 
tically always exhibited no more than slight deviations; 
and where these happened to be exceptionally large, the 
cause of the deviations has remained obscure. As a rule, 
we may assume that favorable conditions increase the 
Fig. 102. Hclianthus annnus syncotyleus. The first leaves 
of syncotylous seedlings. A, a leaf of the first pair with 
three peaks and inserted above the syncotyl ; B, a leaf 
with two peaks placed opposite the syncotyl ; C, a leaf 
with two peaks above the first pair of leaves. 
hereditary values ; but only to an inconsiderable extent, 
and especially so within the relatively narrow limits of 
the scale on which our plant can be cultivated in the 
garden. 
In 1892, and at other times, I also collected the seeds 
from the flowers on lateral branches ; both the flower- 
heads and their fruits are smaller here than at the top of 
