MUCORINI OR GLOBULAR MOULDS. 



151 



fumigatuSj are the cause of most of the so-called mycoses, 

 such as keratomycosis, otomycosis, myringomycosis, and 

 pneumonomycosis. The growth is either black, gray, green, 

 or yellow in color. 



Penicillium or brush moulds (Fig. 60) : In this variety the 

 terminal extremity of the sporangium divides dichotomously 

 into small endings, basidia, which form a brush. On the 

 free end of each basidium is a long row of spores, as though 



FIG. 60. 



Penicillium. (Lehmann.) 



the end of the basidium had segmented into small globules. 

 Penicillium glaucum is the example of this class. It is found 

 widely distributed in nature, and is the most common mould. 

 Its growth on bread is at first white, but as soon as sporula- 

 tion occurs it assumes a greenish color. 



Mucorini or globular moulds : These moulds (Fig. 61), 

 although very common, are not met with so often as the pre- 

 ceding group. Their growth is white. The end of the 

 sporangium enlarges to form a globular bulb, which is parti- 

 tioned off into several compartments, each of which contains 



