Bul. 380, U.S. Dept. of Agriculture, 
PLATE IX. 
ENDOTHIA GYROSA. VERTICAL SECTIONS OF STROMATA ON 
BEECH. xX 32. 
Fia. 1.—SHOWING NUMEROUS PYCNIDIAL CAVITIES ANDT WO MATURE PERITHECIA. 
Fig. 2.—SHOWING MaTuRE PYCNIDIA AND PERITHECIA SIDE BY SIDE. 
Except where otherwise indicated, the photomicrographs of stromata are from unstained 
sections cut with a freezing microtome. 
