Bui. 38C, 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 gyrosa. Ver- 

 tical Section of a Stroma on Beech, Showing Mature Pycnidiawith 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. 



