One or more layers of pericycle under endoderm. It is composed of parenchyma or scarenchyma or both tissues. Sclerenchyma tissue sits like a cap on top of the phloem. It is called Bundle cap. Pumpkin and sunflower stems have hard busts. Pericycles are present in the roots and stems of pteridophytes and in the roots of flowering plants. In the stems of pumpkin and kumarica plants, the pericycle is multi-layered and composed of scarenchyma tissue. It is absent in parasites and aquatic plants. In modern concepts, the pericycle is part of the phloem.
Function of pericycle: It produces apical roots in the stem. It gives strength to the plant. It stores food. It creates side roots.