OKDER LAGENIDIALES 



103 



Fig. 33. Lagenidiales, Family Lagenidiaceae. Lagena radicicola Vanterpool & 

 Ledingham. (A) Zoospore and semidiagrammatic representation of infection of root 

 hair of wheat. (B) Zoosporangia in top and side view and an empty zoosporangium. 

 (C) Formation of vesicle at apex of discharge tube of zoosporangium. (D) Semidia- 

 grammatic representation of the conjugation of two thalli. (Courtesy, Vanterpool 

 and Ledingham: Can. J. Research, 2(3):171-194.) 



