PLATE 2 
Phyllostictina carpogena Shear 
APrimordiiim in which a few cells at the center have undergone disorganization: 
mucilaginous remains of other cells still visible; cells surrounding lower portion of 
the central cavity beginning to grow inward; two or three layers of “carbonized” 
tissue suirounding the primordium not shown. 
—Primordium of a small pycnidium; cavity formation progressing; protosporo* 
phores growing inward; “carbonized” portions of outer wall not shown. 
C.—Similar to the preceding, but protosporophores more definite. 
D—Layer of cells lining the cavity composed of protosporophores; colloidal cell 
remains still present in the cavity; inner wall of pycnidium becoming organized; cell 
divisions in various planes account for the increase in the number of cells. 
Figures were drawn with the aid of camera lucida, Zeiss No. 8, ocular, ?-mm. oil- 
immersion lens. 
