254 THE FUNGI WHICH CAUSE PLANT DISEASE 



Fio. 185. — ^V. insequalis. A, portion of a section through a scab spot on apple; 6, spread- 

 ing under and lifting the cuticle, a; c, partly disorganized cells of the apple; e, healthy 

 cells of the apple. B, two conidiophores with summer spores /. C, spores ger- 

 minating. D, portion of a section showing a perithecium and asci. E, two asci, each 

 containing 8 two-celled spores, three of which are shown at F. After Longyear. 



