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A STUDY OF LEAVES. 



STIPULES. 



Stipules are small, leaf-like organs at the base 

 of some leaves. Leaves having stipules are said to 

 be stipulate ; those without them are exstipulate. 



The stipules may be — 



Free (a) } looking like perfect leaves, and assist- 

 ing the leaves in their work. 



Adnate (<£), growing to the petiole 



Sheathing (c), surrounding the petiole like a 

 hood. 



Thread-like (d), long and slender. 



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