132 BOTANICAL GAZETTE [aucusT 
Following the free nuclear stage of the female gametophyte, 
radical walls come in, closing the cavity before the appearance of 
periclinal walls. 
The archegonia appear early in the endosperm. The central 
cell is the functional egg, no ventral canal cell or ventral nucleus 
being formed. 
More than one female gametophyte in an ovule is common; as 
many as 5 were observed. 
In fertilization the nuclear contents of the pollen tube are 
discharged into the egg. A cytoplasmic sheath is formed about 
the two fusing nuclei. 
From pollination to fertilization may be as ast as one month. 
Mature seeds have been collected 6 weeks later. 
In general the gametophyte history agrees with that reported 
for T. baccata. 
The writer takes hamic: in acknowledging obligations to Pro- 
fessors JoHN M. Coutter and C. J. CHAMBERLAIN, under whose 
direction the study was made. 
BRIDGEWATER, VA. 
“Coniferen.. pp. 179. pis. 33- “Leipzig 1851: igh translation. Lon- 
don. 1862 a ; 
_ 2 Smaenons, E» De Angopemen unt ie Grmncspemen. 17 
