Chap. X. 



APOGEOTEOPISM. 



505 



tlie upward curvature cannot be due to heliotropism or iifpo- 

 uasty, but to apogeotropism. 



Fig. 188. 



N, 



OxaHs camosa : moTements of flower-peduncle, traced on a vertical giau 

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

 injij vertically; C, subsequent upward movement, due to apogeotropism 

 and hvponasty combined 



