226 BOTANICAL GAZETTE {Marcu 
Fic. 6.—Cells in apical region of another archicarp when this phenomenon 
is taking place, X 500. 
Fic. 7.—Ascogonial cells of archicarp putting out ascogenous hyphae, 
X 500; note paired nuclei, and persistence of a single pair of deeply staining 
ads 
PLATE IV 
Fics. 8, 9.—Transverse sections through budding ascogonial cells at 
points Sicaoen places where ascogenous hyphae arise, X 1315; note vacuolated 
cytoplasm and paired nuclei; no fusion stages have been observed; in those 
cases in which a solitary nucleus appears, its companion lies either above or 
below. 
Fics. 10, 11.—Transverse sections through budding ascogonial cells, 
X1315; in these cases ascogenous hyphae at their point of origin lie in plane 
of section; note paired condition of nuclei in ascogenous hyphae 
Fic. $5 Riigesin hyphae midway between ascogonial elt and devel- 
oping hymenium, X1315. 
Fic. 13.—Terminal branches of ascogneous hypha just preceding crozier 
formation, X1315. 
Fics. 14~18.—Ascus hooks containing single pair of nuclei preceding 
conjugate division, 1315. 
IGS. 19-21.—Ascus hooks containing 4 nuclei after conjugate division has 
taken place, X1315. 
Fics, 22, 23.—Young asci, fusion nucleus in each still showing two nucleoli, 
Fic. 24.—Fusion nucleus containing single fusion nucleolus, < 1315. ; 
Fics. 25-27.—Young asci showing fusion nucleus with single nucleolus, 
oO. 
