200 BOTANICAL GAZETTE | OC1OBER 
Fic. 28. Condition slightly later than 7g. 27 ; oogonium just before zona- 
tion; nuclei approximately at metaphase in both oogonium and antheridium ; 
no sharp separation between ooplasm and periplasm. X 857. 
Fic. 29. Slightly later than fig. 28; anaphase of first division; daughter 
nuclei entering ooplasm; ooplasm and periplasm sharply differentiated. 
xX 1366 
Fic. 30. Immediately after the first division; primary oospheric nuclei 
moving toward coenocentrum, two of them strongly elongated; differentia- 
tion between ooplasm and periplasm sharp; plasmoderma probably present 
and many periplasmic nuclei pressing against it; coenocentrum prominent. 
re 
Fig. 31. Slightly later than fg. 70; ooplasm and periplasm separated by 
definite plasmoderma ; oosphere multinucleate ; coenocentrum contracted to 
a spherical homogeneous globule surrounded by dense protoplasm; primary 
oospheric nuclei attracted by coenocentrum. X 857. 
FiG. 32. Metaphase of second mitosis; several nuclei attached to the 
coenocentrum ; periplasmic nuclei not dividing ; plasmoderma well defined ; 
coenocentrum staining darkly and not homogeneous. X 8 
Fig. 33. Antheridial tube nearly ready to open, eas several nuclei; 
oosphere in same condjtion as shown in fig. 32, z. e., nuclei in second mitosis. 
xX 1366. 
Fic. 34. Similar to #g. 72, nuclei in second anaphase; ten dividing 
nuclei discernible in this one section. x 857. 
F1G. 35. One female nucleus lying beside the coenocentrum — somewhat 
larger than daughter nuclei of second division; general appearance of the 
oosphere much like that in fig. 76. X 1366 
Fic. 36. After the opening of the antheridial tube; definite wall sur- 
rounding oosphere; remains of antheridial tube in oosphere ; female nucleus 
in resting condition much larger than in fig. 75 and lying beside the remains 
of the coenocentrum, which has lost its characteristic form ; sperm nucleus 
somewhat elongated. x 857. 
Fig. 37. Male and female nuclei lying in contact, both in resting condi- 
tion, enveloped by the remains of coenocentrum; male larger than in earlier 
stages ; compare figs. 75, 36. X 1366. 
Fic. 38. Similar to fig. 37, also showing degenerate nuclei from same 
oosphere. X 1366. 
1G. 39. Fusion nucleus and remains of coenocentrum. x 1366. 
Fic. 40. Anaphase of first division of fusion nucleus. x 1366. 
Fic. 41. Winter condition of spore, showing thirteen nuclei in one sec 
tion. X 857. 
Fig. 42. Receptive papilla; oosphere like that shown in fig. 32. 
