CHAV. X. 



APOGEOTROPISM. 



505 



t]ie upward curvature cannot be due to heliotropism or hypo- 

 nasty, but to apogeotropism. 



Fig. 188. 



OxaKs cai-nosa : movements of flower-peduncle, traced on a vertical |iau 

 A, pinastic downward movement; B, circumnutation whilst depend- 

 ing vertically ; C, subsequent upward movement, due to apogeotropisra 

 and hvpoimstv combined 



