CONIFERALES (TAXACEAE) 



337 



Fig. 386. — Torrcya laxifolia: median longiludinal section of female gametophyte, 

 showing egg with large nucleus (0), the remains of a neck cell (nc), and antipodal 

 haustorial cells (hr) ; also the tip of a pollen tube in contact with the egg, showing stalk 

 nucleus (sin), tube nucleus (/«), and the two unequal male cells (w' and m^); the 

 upward growth of the endosperm cells forms a sheath around the pollen tube; August 

 12, 1904; X460. — After Coulter and Land (ioi). 



