FUNGOID DISEASES 



a piece of cotton-wool to represent a hypha, then 

 several such threads represent the hyphae ; and a 

 little of the wool spread out thinly corresponds to 

 the mycelium. 



Sporangiophore and Conidiophore. — After ''feed- 

 ing" for a time, certain aerial hyphas grow out from 

 the mycelium, on which spores are subsequently 



A B 



Fig. 2. — Mucor mucedo — (A) Showing the formation of a sporangium ; 

 (B) the sporangium full grown containing the oval spores. The stalk 

 (5) is called a sporangiophore. (Highly magnified.) 



formed. If the spores are enclosed in a sac (e.g. 

 Mucor mucedo, Fig. 2) these aerial hyphas are called 

 sporangiophores, if they are borne externally on 

 branches the aerial hyphse are called conidiophores. 

 Sclet'otia. — Under certain conditions — usually 

 when food or moisture is lacking — the hyphae, at 

 certain points of the mycelium, branch and interlace 

 to such an extent that firm felted masses called 

 sclerotia result. These sclerotia are hard and 



