THE riOMENTS OF MICRO-ORGANISMS 305 



Pigments wliirji are derivatives oi 2-nicthyl anthra- 

 () 



quinone 







/>. 



CH, 



31 

 4 ,^ 



, arc responsi])lc for 



the colours of many of the lower fungi, notably in the 

 genus Helminifwsporium and certain Aspergillus and 

 Penicillium species. Some of them are listed in Table 28. 



Table 28 



It is possible that the anthraquinones, like the 

 toluquinones, may play the part of hydrogen carriers in 

 mould respiration. Some species related to A. glciiicus 



