GEOTRICHUM 



297 



gian Iambic beers and English stock beers (porter, stout, pale ale). 

 It takes several months for the fermentation to come to completion 

 but the final product may have as much as 10 per cent alcohol. 

 Conditions must be kept anaerobic to prevent acid, formation. A 



Fig. 117. Candida (Brettano- 



viyces bnixellensis var. noji- 



memhranaejaciens) . Camera 



lucida. 



Fig. 118. Trichosporon cutaneum: 

 1 and 2, blastospores; 3 and 4, 

 arthrospores ; 5 and 6, blastospores 

 and arthrospores. Camera lucida 

 from slide. 



thesis, not consulted by the authors, has been published by Ousters * 

 in the Dutch language on these organisms. 



For the so-called "Monilia nigra" see page 111 and for M. sitophila 

 see page 115. 



Trichosporon. This intermediate genus consists of those forms 

 which produce both blastospores and arthrospores. It is of some 

 medical importance. See Chapter X. Fonseca and Area Leao ^ have 

 reported the formation of ascospores in one species and have trans- 

 ferred it to the perfect genus Piedraia. In most species the perfect 

 stage has not been described. Puntoni - has recently added con- 

 siderably to our knowledge of this group of microorganisms and un- 

 doubtedly much more study will be given to this genus in the future. 

 T;richosporon with a variant spelling as Trichosporum must be dis- 

 tinguished from the totally different Trichosporium, one of the 

 Dematiaceae. There has been some confusion of these genera in 

 the literature. 



Geotrichum. This genus is less like what is ordinarily termed 

 yeast than any of the other genera mentioned in this chapter. It 



