S11 
more than the first four. For plants with two and three stami- 
nodes differences in the external conditions might be the cause, but 
for those with only two this is less likely. 
TABLE IV The number of staminodes of the F 2. 
Number of staminodes 
SOMMER ece toe SS Se Sai te, 
three three to four three to two > two 
1 56 6 1 l 
V's 27 4 4 0 
3 131 3 6 0 
4 44 0 | 4 1 
oF 157 8 9 4 
6 113 3 10 l 
7 67 6 6 2 
TotakAint st. [7505 | 30 38 9 
In a discussion of the colour of the flowers it will be shown 
that, even apart from the fairly large variation of these figures, no 
independent Mendelian segregation occurred, since in the first four 
-sowings the individuals with two and with two or three staminodes 
were out of proportion more numerous among the plants with 
yellow than among those with red flowers. 
The length and breadth of the staminodes. 
These differ considerably in C. indica and C. glauca. In the 
former species the length varied from 45—69 mm. and the average 
was 59,297 mm. calculated from 482 specimens. The breadth was 
8—14 mm., the average of 480 flowers 10,808 mm. For C. glauca 
these figures were 70—97 mm. with an average of 87,076 mm. 
for 485 measurements, and 18— 20, average 16,235 mm. 
The Fi had staminodes of length 70—89 mm. average 82.661 mm. 
and breadth 14-18, average 16.524 mm. The staminodes were 
therefore a trifle shorter than those of the parent with longest 
staminodes; there is no appreciable difference in breadth. In com- 
parison with C. g/auca the extent of variation is very limited, which 
is no doubt explained by the fact that the F1 consisted of a single 
