2o6 Diseases of Greenhouse Crops 



Leaf Spot 



Caused by Ascochyta aspidistra Mas. 



This disease is characterized by roundish, whit- 

 ish spots on the leaves. The trouble is as yet of no 

 economic importance. Little is known of the causal 

 organisms. Of the other fungi recorded on aspidis- 

 tra may be mentioned Fyrenochczta bergevini Roll. 



