TllALLUPlIYTES; FUNGI 



i!T7 



Fu;. 2-11. Head of rye attacked by " er- 

 got " {a), peculiar graiu-like masses 

 replacing the grains of rye ; also a 

 mass of "ergot" germinating' to 

 form spores (6).— After Tulasne. 



Fic..'2-lii. A cup-fungus (Pitya) grow- 

 1112; on a spruce iPicea). — After 

 Eedm. 



In some of these forms the ascocarp is completely closed, 

 as in the lilac mildew ; in otlicrs it is flask-sliaped ; in 

 others, as in the cup-fungi, it is like a cup or disk ; but in 

 all the spores are inclosed by a delicate sac, the ascus. 



