MOLDS. 27 



and conidia are colorless, later some or all of the cells develop heavy 

 dark brown walls. Although not active as an agent of fermentation, 

 it occurs very frequently in the fermentation industries sometimes 

 discoloring the fermenting products. The conidia bud out from the cells 



FIG. ii. A colony of Manilla Candida. (Photographed by Zae Northrup.} 



of the mycelium in a manner resembling the yeasts. Its occurrence with 

 the yeasts has led to many careful descriptions of its several types of 

 spore production and its biological activities. 



SAPROLEGNIACE^: AND ENTOMOPHTHORACE^E. These are two groups 

 of Phycomycetes which differ from the mucors in habit and in their 

 prominent development of sexual reproduction. 



ENTOMOGENOUS FUNGI. Numerous species have been identified as 

 the destroyers of particular insects. 



