The plant leaves represented are made of blades and petioles.
The blade is the plant leaf. It is the blade of the basil leaf that it used to season food.
The petiole is attaches the leaf to the plant stem.
Petioles are the part of the leave that attaches the blade to the plant stem. What is generally called the celery stalk is actually the petiole. Both the petiole and blades (leaves) of celery are eaten.
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