174 Observation of the Origin of \\uicties. 
minal inflorescences. The result proved my view to be 
correct and showed the necessity of the correction which 
it had suggested. For there were 22 plants which, al- 
though their terminal inflorescences were 21 -rayed, had 
a part-curve with an apex at 13-14. The following 
are the data as obtained at the end of August : 
L. F. 12 13 14 15 16 17 18 19 20 21 
Lateral flowerheads of 22 indiv. 2 54 58 51 28 19 19 12 2 2 
These plants therefore belonged to the 13-rayed race, 
and were consequently eradicated. 
Besides these, there were five plants with doubtful 
curves; they were also not retained. All that was left 
was a group of 6 individuals whose curves seemed to me 
sufficiently distinct and certain to justify the harvesting 
of their seed. The following line gives the sum of their 
data : 
L. F. 12 13 14 15 16 17 18 19 20 21 22 
Lateral flowerheads of 6 indiv. 1 3 5 4 6 11 21 30 29 1 
All in all there were 111 inflorescences. 1 If the 
terminal inflorescences of these plants (5 with 21, 1 with 
26 rays ) had been included, the maximum would have 
been exactly at 21. Seed was saved only from these 
six plants for the 1896 crop. It was harvested separately 
from each parent. 
The fertilization of these plants had not been wholly 
pure, because the rejected plants referred to above could 
not be recognized nor removed before the latter part 
of August, and because flowers which bloom in Sep- 
tember set hardly any seed with us. Each of the six 
crops actually gave a curve which had a distinct maxi- 
mum at 21, but only one of them (No. 1) wholly lacked 
1 The curve is figured in Bcr. d. d. bot. Gcs..Vol XVII. Plate VTI. 
. 2R. 
