i 20 Ernest S. Salmon. 
TABLE VII. 
Infection-experiments with conidia of Sphaerutheca Hamuli 
var. fuliginea on Plantago lanceolata. 
Exper. 
No. 
Date 
1903 . 
• 
o ■ 
O CL) 
Species used as Host. 6 S ^ 
z * g 
No. of 
leaves 
infected. 
58a 
July 21 
... Plantago lanceolata ... 2 
2 
135a 
Aug. 24 
„ 2 
2 
58b 
July 21 
P. major ... 2 
0 
135b 
Aug. 24 
... Taraxacum officinale ... 2 
0 
Remarks. 
58a. July 31. Under and upper surfaces of both leaves 
covered with very numerous scattered conidiophores at the inocu¬ 
lated places ; control leaves (five) free. August 3. Both leaves 
with powdery Oidium- patches. 
135a. September 8. Numerous scattered conidiophores with 
chains of ripe conidia at the inoculated places on both leaves; 
controls free. September 16. Scattered conidiophores on both 
leaves ; controls still free. 
(Note.— Young potted plants of all the species were used). 
TABLE VIII. 
Infection-experiments with conidia of E. Cichoraceanim on 
Plantago major. 
Exper. 
No. 
Date. 
1903 . 
Species used as Host. 
No. of 
leavesino-^ 
culated. 
No. of 
leaves 
infected. 
77a 
Aug. 4 
Plantago major (flowering plant) 
2 
2 
199a 
Sep. 15 
„ (seedlings) 
3 
3 
220a 
„ 23 
11 11 
3 
3 
220e 
„ 23 
11 11 
3 
3 
229a 
„ 24 
11 11 
2 
2 
77b 
Aug. 4 
P. lanceolata (flowering plant) 
2 
0 
220c 
Sep. 23 
„ (seedlings) .. 
3 
0 
220g 
„ 23 
Ji 11 
3 
0 
77c 
Aug. 4 
P. media (flowering plant) 
2 
0 
199b 
Sep. 15 
„ (seedlings) 
2 
1 
220b 
„ 23 
11 11 
3 
0 
220f 
„ 23 
11 11 
3 
0 
229b 
„ 24 
11 11 
2 
1 
77d 
Aug. 4 
... Galium A purine 
6 
0 
220d 
Sep. 23 
... Eupatorium cannabinum ... 
3 
0 
Remarks. 
77a. August 16. Patches of radiating mycelium bearing a 
few conidiophores on the upper surface of the two leaves at the 
places of inoculation ; control leaves (5) free. August 20. Patches 
