PLATE II 



DEVELOPMENT OF COLLETOTRICHUM LINDEMUTHIANUM WITHIN HOST TISSUE 



1, Section across very small, newly formed lesion on Refugee Wax bean pod. The dotted part repre- 

 sents discolored area as seen in the microscope, the mycelium extending beyond this. Spores are being 

 produced in a pocket beneath the cuticle, which is not yet ruptured. X 55 



2, Same tissue, higher magnification. The disorganization of subepidermal cells can be noted. X 166 



3, A few cells from cross section of an infected wax-bean pod. showing advancing fungous hyphae 



4, Section across recently invaded tissue of outer coat of affected pod, showing twelve fungous hyphae 

 penetrating the wall of a cell. X ^3 



212 



