2l6 
MORPHOLOGY 
sin 
Fro. 479. Mature female gametophyte of Torreya, showing the. single archegonium 
containing a large egg nucleus (o), remnants of the neck canal cell nucleus (nc), and the 
tip of the pollen tube containing tube nucleus (tri), stalk cell nucleus (stn), and the two 
unequal male cells (ff l , m 2 ). After COULTER and LAND. 
