THE PLANT BODY 



73 



FIG. 37. Common Pitcher-plant (Sarracenia purpurea). At the right, one 

 of the pitcher-like leaves is shown in cross section. (From Bergen.) 



FIG. 38. Leaves of Sundew during digestion of captured prey. The one at 

 the left has all the tentacles closed ; the one at the right, only half of them closed 

 over the prey. (From Bergen.) 



