FIG. 40. Penicillium glaucum. 



A, Diagrammatic vertical section of a young growth (x 5), showing 

 mycelium (my), submerged hyphse (s. hy\ and aerial hyphee (a. hy\ 



B, group of spores : I, before commencement of germination ; 2, after 

 imbibition of fluid : the remaining three have begun to germinate. 



C, very young mycelium formed by a small group of germinating 

 spores. 



