ZEA 165 



(a) Pedicellate spikelet shortens and becomes sessile; the 

 difference between the two flowers of this becomes greater. 



(b) The lower glume shortens and thickens. 



Fig. 6r.- — Corn (Zca mays). Young pistillate infLjrescence ("ear"), showing 

 the long styles ("silks"). 



(c) Lemma and palet of upper flower become reduced 

 while the lower flower becomes abortive. 



(d) Sessile flower becomes pistillate. 



(e) Both flowers become pistillate. 



