The leaves of Dionaea muscipula are arranged in rosettes with a diameter varying from 10 to 15 centimeters in adult size (much more for certain varieties of culture) and are composed of a blade in two parts:

 

     - The lower (base of the leaf) has a very variable width compared to its length, itself variable depending on the variety.

     - The upper part of the blade is formed by the trap, a kind of jaw composed of two separate lobes and connected by a thick central vein, connected to the lower part by the petiole, also of variable length according to the cultivars.

 

On the periphery of the two lobes there is a series of 15 to 20 marginal teeth slightly curved inward.

At the edge of the lobes and located on the inner side of the walls, the peripheral strip contains small sessile glands which secrete a nectar rich in carbohydrates, in order to attract prey.

 

The digestive surface (or internal surface) on which stand three hairs arranged in a triangle is located in the center of the two lobes and is covered with a multitude of digestive glands.