Fig. 23. Nepenthes gracilis, a pitcher-plant inhabiting swamps in 

 the East Indies. Some of the leaves are normal, others have the 

 midrib continued as a long, slender, tendril-like stalk that becomes 

 expanded at the apex into a hollow pitcher -like body furnished with 

 a lateral opening near the apex, and constructed for the purpose of 

 capturing and digesting insects. 



