SLEEPING DISEASE OF TOMATO 



329 



mould. This mould consists of fruiting branches or coni- 

 diophores which bear conidia at the tips of their whorled 

 branches. The conidia fall to the ground, where they 



Fig. 90. — Fusarium lycopersici. i, Diplocladium 

 stage, X 300 ; 2, Fusarium stage, X300; 3, resting- 

 spores, X 300. 



germinate, producing a mycelium which attacks the root- 

 lets of tomato, and continue the disease. 



This is the first, or Diplocladium stage of the fungus, 

 which is quickly followed by the second, or Fusarium con- 

 dition, which forms from the same mycelium that pre- 

 viously produced the Diplocladium. The spindle-shaped, 

 curved spores of the Fusarium stage are produced in 



