184 



GRASSES OF IOWA. 



well-known fact that several of the moulds 

 related to Asperillus are the cause of 

 what is called mycosis in many of the 

 lower animals. Aspergillus glaucus or, 

 more properly speaking, the Eurotium 

 {Aspergillus) glaucus is extremely common 

 not only in hay but in many other objects, 

 and yet this disease is very rare. This 

 question should be further investigated. 



Fig. 78. Common blue 

 mould (PenicUlium glau- 

 cum). Spores at end of 

 branches; spores borne 

 1/1 chains. (Pammel and 

 King) 



Fig. 79. Common Herbarium mould. (1) general appearance, showing long conldl- 

 ophore and sterlgmat^ on end; (2) perltheclum with one of Its ascl and ascospores; (3) 

 contents from an unripe perltheclum; (4) a small part of a mycelium with conldlophore 

 c, and spore bearing sterlgmata, young ascogonlum a. 8. (DeBary except 1.) 



