198 



YEASTS AND MOULDS 



Multiplication occurs in two ways. Upon the hyphae 

 may develop a reproductive organ, the sporangium, 

 containing spores that become free upon its rupture. Or 



FIG. 56. These two half-plates show three months' growth on 

 peptone-maltose agar of two megalosporon varieties of the ringworm 

 fungus. Natural size. (Park.) 



the hyphse may split into segments, giving off end-pieces 

 reproducing elements, called conidia, the whole 



as 



giving the appearance of the hand bones, the phalanges 

 representing the conidia (see Penicillium glaucum). 



