BLACK MOLD 



47 



plant with numerous nuclei. Rhizopus and other multi- 

 nucleated plants are called Coenocytes. 



Asexual Reproduction. At first the aerial hyphse are similar 

 to the other hyphse but in a short time the apical portion 



FIG. 16. Fungi. Bread mold (Rhizopus nigricans). The four upper 

 figures show the development of the sporangia. The fifth upper figure shows 

 the spores removed from the columella and the sporangial wall ciirved down- 

 ward. The lower figures show hyphae conjugating to form the large rough- 

 walled zygospore. 



