257 
on Inconspicuous Flowers. 
number of seeds per capitulum of the cross-fertilized being to 
the average number per capitulum of the self-fertilized as 
ioo to 73. 
Table I— Senecio vulgaris. 
In their original order. 
In order of magnitude in 
a single series. 
A 
B 
c 
D 
E 
F 
Crossed. 
Self-fert. 
Crossed. 
Self-fert. 
Difference. 
cms. 
cms. 
cms. 
cms. 
cms. 
Pot I 
10-4 
8-0 
T 9’5 
15-0 
-4-5 
13-4 
12-5 
19*0 
13-9 
io-o 
12-7 
17*5 
i3-7 
-3.8 
Pot II 
105 
9-5 
14.4 
12-8 
— i-6 
13-2 
15.0 
i3-4 
12*7 
- o «7 
Pot III 
1 1-6 
12-8 
13-2 
12-5 
-07 
12-0 
I 2*0 
12*0 
12-0 
± 0 
I4.4 
1 1*6 
1 1-6 
12-0 
4 - 0.4 
Pot IV 
19*0 
13-9 
n -5 
1 1*6 
+ 0-1 
io*5 
9.0 
10.7 
9.9 
-0.8 
Pot V 
10.5 
8.5 
10.5 
9-5 
— 1-0 
Pot VI 
10-7 
8-8 
10.5 
9.0 
- i-5 
Pot VII 
11. 5 
i3-7 
10.5 
8*8 
-1.7 
i9-5 
9-9 
io*4 
8-5 
-i >9 
J 7-5 
12-0 
10-0 
8*o 
— 2-0 
Total in cms. 
194.7 
169.9 
II.- — Capsella Bursa-pastoris. 
According to H. Muller, this species is visited by insects to 
some extent, but its flowers are very inconspicuous and per- 
fectly self-fertile 1 . The plants used were taken from the same 
Befruchtung d. Blumen, p. 138 . 
