CHAP. X. 



APOGEOTKOPISM. 



505 



the upward curvature cannot be due to heliotropism or hypo- 

 nasty, but to apogeotropism. 



9 Fig. 188. 



"--... 



Oxalis camosa : movements of flower-peduncle, traced on a vertical glass : 

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

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

 and hyponasty combined 



