PERISPORIALES 



205 



In Lanomyces tjibodensis (Gaumann, 1922c), parasitic on the leaves 

 of Castanopsis argentea in the mountain forests of West Java, the hyphae 

 are generally 2 to 3 nucleate; as those of Leveillula taurica they are pri- 



Fig. 130. — Lanomyces tjibodensis. 1. Extramatrical mycelium with three loosened peri- 

 thecia. 2. Sinker penetrating between epidermal cells. 3, 4. Young copulation branches. 

 5, 6. Copulation branches which failed to mate and have hypertrophied. 7, 8. Fertiliza- 

 tion. 9 to 13. Development of the young perithecium. 14. Section through a perithe- 

 cium, showing both peridial layers. 15. Section through an immature perithecium; the 

 outer peridial layer is left off, the ascospores are compressed. (1 X 55; 2 X 550; 3 to 15 X 

 335; after Gaumann, 1922.) 



marily endophytic, penetrate large areas of mesophyll, form knob-like 

 haustoria of medium size and stimulate the leaves to form small galls. 

 In time they push out between the epidermal cells, branch much there, 



