PLATE 6 c 
Schizoparme straminea Shear 
A. —Mature pycnidium grown on strawberry; buffer tissue well-developed; walls 
of cells surrounding the ostiole thickened and blackened; layer of stainable cell 
remains clinging to inner wall; sporogenous tissue below. 
B. —Black conical ostiole more distinct, the only part yet “carbonized.” 
C. —Mature pycnidium grown on agar in such a way as to cause inversion of the 
sporogenous tissue; buffer apparatus penetrated by the pointed ostiole oblique to the 
surface of the medium. 
D. —Fertile tissue completely inverted so that two ostioles are formed. 
E. —Mature pycnidium grown on strawberry. 
F. —Normal mature pycnidium taken from a leaf of sumac; ring of cell remains 
lining the central cavity. 
c Figure A is from a photograph by Marguerite Ickis. 
