peronosporai.es 



1059 



Fig. 90. Phytophthora 



A-B. Phytophthora oryzae (Ito and Nagai) Waterhousc; A, sporangial 

 bearing branch with one proliferous zoosporangium; B, sporangial branch 

 with empty, discharging, and immature zoosporangia. C-F. Phytophthora 

 megasperma Drechsler: C, sexual apparatus; D, proliferous, discharge zoo- 

 sporangia; E-F. sexual apparatus. G-I. Phytophthora cryptogea Pethybridge 

 and Lafferty: G-H, proliferated zoosporangia; /, sexual apparatus showing 

 amphigynous antheridium. 



(A-F, Ito and Nagai, 1931; G-I, Pethybridge and Lafferty, 1919) 



