204 



VEGETABLE PHYSIOLOGY 



apex attaches itself to the ground, and the free portion 

 moves round, describing a sort of spiral in the air. If 



FIG. 102. SECTION OF STEM OP DICOTYLEDONOUS PLANT ATTACKED BY 

 HAUSTOKIA OP Cuscuta. 



it comes in contact with a suitable host, it twines round 

 it after the fashion of a tendril, and numerous suckers are 



