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Various Leaf Types

Leaves can be distinguished as follows:

 

Palmate leaves exhibit a fan-shaped lamina consisting of pinnae all attached to the apex of the rachis;

 

 

 

Costapalmate leaves exhibit a fan-shaped lamina consisting of pinnae attached to the distal end of the rachis, thus forming a rib projecting into the lamina; 

 

 

Pinnate or bipinnate leaves exhibit pinnae attached on both sides of the rachis.

 

 

 

Pinnae, exhibiting one to several folds, may be either linear or fish-tailed, or acute or finally truncate, lower ones are often turned into spines.