144 THE FUNGI WHICH CAUSE PLANT DISEASE 



Chlorosplenium Fries (p. 135) 



Ascoma mostly aggregated, small, stalked, smooth without, 

 green; asci cylindric, 8-spored; spores elongate, 1-celled, guttulate, 

 hyaline; paraphyses linear. 



The genus consists of some ten species only one of which is of 

 interest here. 



C. aeniginosum (Oed.) d Not. 



The apothecia and mycelium are verdigris-green as is also the 



Fig. 101. — D. wilkomii. A, natural size and single apothe- 

 cium enlarged; B, an ascus. After Lindau. 



wood penetrated by it. The fungus appears to be mainly sapro- 

 phytic but may be partially parasitic. Fig. 100. 



Dasyscypha Fries (p. 135) 



This is a genus of some one hundred fifty species, mostly sapro- 

 phytic but soiuetimes parasitic on twigs. The apothecia are small, 

 short-stalked or sessile, waxy or membranous, bright colored in the 

 disk, with mostly sifflple hairs on the outside and margin. Asci 

 cylindrical or clavate," 8::«pored ; spores ellipsoid or fusiform, 

 hyaline, 1-celled, rarely 2-ceiicd, sometimes guttulate; paraphyses 

 blunt, needle-like. 



