THE MOULD-FUNGI. 



107 



of unequal form and size. Cienkowski, in his memoir on the 

 fungi occurring in films, first gave a detailed description of 

 Chalara. Hansen found that this mould-fungus develops 

 in ordinary wort and lager beer. 



10. A mould-fungus about which a great deal has been 

 written in the literature of our subject, but whose practical 



FIG. 24. 



Chalara Mycoderma, after Hansen : 1, a branched hypha, the terminal limb 

 of which is throwing off conidia ; 2, a hypha, at the upper cell of which 

 a sterigma, which has thrown off conidia ; 3 9. various forms of links 

 of hyphse, which are separating conidia. 



importance certainly stands in inverse ratio to the attention 

 bestowed on it, is Dematium pullulans (Fig. 25), which was 

 first described by de Bary, and later more minutely by Loew. 

 It frequently occurs on fruits, especially grapes, and has a 



