The intercalary meristems are located at the internodes or the base of the leaves. The intercalary meristems help in increasing the length of the internode. This is usually seen in monocotyledonous plants.
Intercalary meristems are capable of cell division, and they allow for rapid growth and regrowth of many monocots.
The primary function of an intercalary meristem is to facilitate longitudinal growth of a plant organ, independent of activity of the apical meristem. Examples are the meristems in the leaf sheaths and internodes of grasses and horsetails.