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



Plate X. 



Fig. 1.— Endothia fluens. Vertical Section of a Stroma from Italy, Showing 

 Young Perithecia IN A Single Layer, x 49. Fig. 2.— Endothia qyrosa. 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. 



