Vascular cambium is a thin layer of cells or strip between xylem and phloem present in the vascular bundle. It consists of two types of cells they are;
Fusiform initials: They are elongated cells with tapering ends
Ray initials: They are isodiametric cells.
Vascular cambium is present parallel to the plant axis and the cell wall is thin and cellulosic. The cell wall contains pits, vacuolated cytoplasm and a large nucleus.