530 



PATHOGENIC FUNGI 



C4 



FIG. 161. A, Mucor mucedo ; 1, 2, 3, stages in formation 

 of a zygospore. 4, a sporangium containing spores. B, 

 Oidium lactis. C, Aspergillus glaucus (De Bary). 1, 

 mycelium. 2 and 5, gonidiophore-bearing spores. 3, 

 4, a perithecium (4 contains rudimentary asci). 6, piece 

 of gonidiophore ; a, sterigma ; b, spore. D, branched 

 gonidiophore of Penicillium glaucum bearing spores. 

 E, F, Saccharomyces cerevisiae, cells are budding. G, 

 ditto, formation of endospores (after Hansen). 



