94 EDGERTON: GNOMONIA 
The microscopic characters of the fungus as I have determined 
them are as follows: The perithecia (FIG. 2) are subglobose, 200- 
260 x 175-220 p, filled with the numerous asci. The asci (FIGS. 3@, 
4) are long-clavate, 30-50 x 6-9 p, and contain as a rule but four 
spores, though occasionally some aborted spores may be seen at 
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Fic. 1. Gnomonia Rubi Rehm on stem of Rubus nigrobaccus, Shows the beaks 
of the peritines protruding through the cortex. 
the base. The pore through which the spores escape, although 
not as prominent as in some other members of the genus Gnomonta, 
is surrounded by the thickened cellulose ring which appears as 4 
refractive dot on each side of the opening. The spores (FIG. 3¢) 
are in one or two series, filling nearly the whole ascus, about 
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