PHYTOPHTHORA. 



21 



Fig. 32. — Pki/tofihthora infataiu. The Potato disease. A, Potato leaf with 

 brown spots and white patches of fungi on the lower side. B, Groups of conidio- 

 jihores emerging from a stoma clo.se beside a hair of the potato leaf. C, Conidio- 

 jihores and conldia, much enlarged. D, Leaf of potato miieh shrivelled up and 

 brown, as in the laier stages of the disease, (v. luVieuf del.) 



