236 



FOOTNOTES FROM 



not in regular rows, but like leaves or fruit in irregular 

 clusters on each branch, whereas the stem of the asper- 

 gillus is unbranched, and bears on its summit many 



FIG. 30. (a) PEJTICILLIUM CRUSTACEDM. (6) ASPERGILLUS CANDIDUS. 



rows of spores, which are placed in linear order like 

 necklaces, and joined to the stem like a bundle of 

 hairs on a brush. The third kind of mould included in 

 this group forms the genus Mucor (Fig. 31), or yellow 



FIG. 31. MUCOR MUCEDO. 

 (a) Natural size. (6) Highly magnified. 



mould, also extremely common. It differs from the two 

 preceding kinds in having its spores, instead of being 

 exposed naked to the air like them, enclosed in a 

 rounded membranous case, bursting irregularly as the 



