Bui. 380, U. S. Dept. of Agriculture. 



PLATE X. 



FIG. 1. ENDOTHIA FLUENS. VERTICAL SECTION OF A STROMA FROM ITALY, SHOWIN'G 

 YOUNG PERITHECIA IN A SINGLE LAYER. X 49. FIG. 2. ENDOTHIA GYROSA. VER- 

 TICAL SECTION OF A STROMA ON BEECH, SHOWING MATURE PYCNIDIA WITH MATURE 

 PERITHECIA BELOW THEM, x 32. FIG. 3. ENDOTHIA GYROSA. VERTICAL SECTION 

 OF A PORTION OF A LARGE STROMA, SHOWING PERITHECIA IRREGULARLY ARRANGED 

 IN SEVERAL LAYERS. 



