Fusariwn Blight of the Soy Bean 
21 
Table 1. — Characters which separate a numher of the wilt-pro- 
ducing species of Fusarium from F. tracheiphilum and 
the soy hean fungus. 
Species 
V - 
Sclerotia 
Sporodochia 
Pionnotes 
Chlamydospores 
. discolor 
None 
Numerous 
Perfect 
Intercalary; no 
measurements. 
F, vasinfectum .... 
Green and 
flesh-colored 
do 
do 
Intercalary and 
terminal; no 
measurements. 
F. oxysporum 
do 
Few 
Reduced 
Intercalary and 
terminal; 6 to 
12 M. 
F. ly coper sici 
Flesh-colored 
Numerous 
Perfect 
Intercalary and 
terminal; no 
measurements. 
F. niveum 
Large green 
do 
Reduced 
Same as for F. 
lycopersici. 
F. tracheiphilum . . . 
Green and 
flesh-colored 
Few 
None 
Intercalary and 
terminal; 6 to 
12 
Fusarium sp. on 
soy bean 
Mostly green; 
some flesh- 
colored 
do 
do 
Same as for F. 
tracheiphilum. 
