PLATE LXXXII 



Fig. i. — A tuber of Colocasia esculenta showing a powdery grayrot caused by Fu- 

 sarium solani. From a laboratory inoculation. 



Fig. 2. — A tuber of Xanthosoma sagittifolium showing partial decay by Fusarium 

 solani. From a laboratory inoculation. 



Fig. 3. — A tuber of C. esculenta softened throughout by Sclerolium rolfsii. Note 

 the hyphae over the entire surface. From a laboratory inoculation. 



