FIG. 30. Rhizopus nccans. i, section of a diseased lily bulb, the 

 dark portion of the base of the bulb is the part attacked by the fungus ; 



2, fruiting condition of the fungus growing on the root of a bulb ; 



3, cluster of sporangia of the fungus ; 4, cluster of sporangia more 

 highly mag. ; 5, optical view of a sporangium ; a, columella, the 

 portion b, between the columella and outer wall is filled with 

 spores ; 6, spores, some of which are germinating ; 7, spores more 

 highly mag., showing the markings on the epispore ; 8, zygospore ; 

 9, mycelium of the fungus running between cells filled with starch. 

 Figs, i and 2 nat. size ; remainder mag. (From Kew Bulletin}. 



