102 



MICRO-ORGANISMS AND FERMENTATION. 



conidiophores (A, Fig. 27) are thrown up perpendicularly. They 

 consist of elongated cylindrical cells, the terminal cell of which 



FIG. 27. Penicillium glaucum (after BREFELD and ZOPF): A, conidiophore ; B 

 organs of generation ; C, first development of the sclerotium (a, ascus-forming hyphfe 

 b, sterile filaments); D, very young sclerotium in section (, ascus-forming hyphae 

 b, sterile portion of the sclerotium ; m, mycelium) ; E and F, ascus-forming hyphse 

 (a) with young asci (s) and sterile mycelium threads (m) from a more developed 

 sclerotium ; G, group of asci with spores ; H, spore ; /, germinating spores ; K, young 

 mycelium (with spore at x). A E (below), germination of a conidium, after ZOPF 

 (more highly magnified) : A , conidium before germination ; B, it has thrown out a 

 germ tube ; C, three germ tubes have been formed ; D, each germ tube shows towards 

 the spore a transverse septum (s) ; E, each germ tube has become divided by another 

 septum (s') into a terminal cell (e) and an inner cell (b). 



soon stops in its longitudinal growth and becomes tapering and 

 pointed ; the cell next below throws out one or more opposite 



