130 



MORPHOLOGY OF ANGIOSPERMS 



The number of chromosomes observed in connection with 

 the reduction division have been noted in the preceding chap- 

 ter (p. 81). 



Fig. 61. — First division of pollen mother-cell, showing formation of the bipolar from the 

 multipolar spindle. ,1, _Z?, E, F, Lilium Martagon ; C-D, L. candid um. A, double 

 row of chromatin granules upon the linin thread ; i?, later stage in which the entire 

 thread has split longitudinally ; t\ formation of a weft of fibers about the nucleus; 

 Z>, multipolar spindle; E, bipolar spindle; F, telophase of first division showing 

 that the division is of the successive type. — After Mottier. 26 



