Fig. 2. 



Fig. 3. 



Fig. 2. — Spring-sown Onion Plant attacked by White Rot, showing 

 the white mycelium around the base of the bulb. 



Fig. 3. — A pure culture of the White Rot fungus grown on potato 

 agar in a test tube. The culture is about a fortnight old, and shows 

 the production of numerous black sclerotia amongst the white mycelium. 



