Stimulation and Correlation. 



133 



the scape. As the development of the numerous flowers pro- 

 ceeds, the curve in the scape is straightened and the inflores- 



^ 



Fig. 107. — Positions of inflorescence of Allium Neapolitanum in earlier stajjes. 



cence is finally held erect. Meanwhile the pedicels exhibit a 

 series second of independent movements. These structures 





"^^ 



Fig. 108.— Positions of flowers of Allium Neapolitanum in advanced and final 



stages. 



acquire a sensitiveness to gravity, by which they tend to curve 

 upward independently. After the scape has assumed a final 



