2l6 



MORPHOLOGY 



Fig. 479. — Mature female gametophytc of Torreya, showing the single archegonium 

 containing a large egg nucleus (0), remnants of the neck canal cell nucleus (wc), and the 

 tip of the pollen tube containing tube nucleus {In), stalk cell nucleus (stn), and the two 

 unequal male cells (»(', »»-). — Aftci CoLLix.i and Land. 



