84 
AMERICAN JOURNAL OF BOTANY 
[Vol. 9 
Tabt.e I. Statistical Data for Successive Generations of Thirty- five Strains of Pestalozzia 
from Five Difierent Hosts 
The number of measurements in each generation was 25 for each character, except in 
a very few instances, when either 15 or 50 measurements were made. Measurements are 
in IX. 
Strain 
Source 
Genera- 
tion. 
- . 
Spore Length 
Terminal Appendage 
Range 
Mean 
Range 
Mean 
. 
I 
I 
17-24 
20.3 
4-21 
II.O 
2 
17-23 
20.2 
9-21 
13.8 
3 
16-24 
20.4 
1 5-2 1 
9.0 
4 
J ^ 2 
19.9 
3 ^3 
T r» c 
5 
17-23 
19.6 
15-17 
9.2 
6 
16-21 
19.0 
3-21 
II.6 
2 
Cocoanut; leaf spot 
I 
17-21 
19.4 
4-14 
9-5 
2 
19-24 
21.0 
4-20 
9.5 
3 
16-26 
21.3 
4-21 
I3-I 
4 
17-23 
19.9 
6-20 
12,9 
5 
17-23 
20.6 
3-17 
.2.5 
3 
Cocoanut; leaf spot 
I 
17-26 
22.3 
17-29 
22.0 
2 
19-26 
22.2 
11-27 
20.0 
3 
20-24 
22.3 
17-31 
22.2 
4 
19-29 
22.4 
10-29 
17-3 
5 
19-24 
Z I .0 
7-23 
T C 
6 
17-24 
20.9 
6-24 
17.6 
4 
Cocoanut; leaf spot 
I 
20-29 
23-5 
17-27 
20.1 
2 
19-24 
21.5 
19-24 
20.1 
3 
19-26 
21.9 
14-26 
19.7 
4 
19-26 
21.8 
11-29 
18.4 
5 
Cocoanut; leaf spot 
I 
20—29 
^4-4 
TO— 19 
OA A 
2 
17-26 
21. 1 
14-34 
23.1 
3 
17-24 
22.3 
13-24 
20.5 
4 
17-24 
20.2 
20-29 
23.0 
5 
19-26 
22.2 
17-27 
22.1 
6 
19-29 
22.4 
13-29 
I9.I 
7 
17-24 
20.6 
11-29 
19-3 
8 
19-29 
23.2 
14-26 
19.0 
6 
Cocoanut; leaf spot 
i I 
19-26 
22.0 
17-29 
22.6 
2 
20-31 
23.8 
14-36 
21.4 
3 
19-30 
22.9 
16-29 
22.8 
4 
21-26 
22.9 
13-26 
20.1 
7 
Cocoanut; milk from infected 
nut 
20-26 
22.8 
14-26 
18.8 
2 
20-26 
23.6 
13-23 
17.9 
3 
21-27 
24.2 
9-21 
14.6 
4 
21-29 
24.2 
9-20 
15.0 
5 
21-30 
25-3 
14-24 
18.5 
6 
20-29 
24-3 
9-20 
14.9 
8 
Oil palm; leaf spot 
I 
23-29 
24.7 
21-36 
26.3 
2 
21-30 
24.7 
20-43 
27.2 
3 
21-29 
24.7 
17-33 
24.7 
4 
21-27 
24.4 
19-34 
26.2 
5 
21-29 
24.6 
21-33 
26.8 
