PLATE XLVIII. 



PERISPORIACEI. 



FIG. 



1. Miciosphaeria Hedwigii, 

 (conccptacle magnified.) 



2. Erysiphe lamprocarpa, 

 {co»(Cei)tacIc and .sporangium magnified.) 



3. Chaetomium chartarum, 

 (perilhectum aiidfree spore magnified.) 



4. Ascotiiclia chartarum. 



5. Podosphsra Kuuzei. 



