MORPHOLOGY 



sin 

 in 



nc 



FlG. 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 (tn), stalk cell nucleus (stn\ and the two 

 unequal male cells On 1 . t 2 ). After COULTER and LAND. 



