ABSTRACT
Lateral meristems give increase in girth (secondary growth). The vascular cambium (sometimes known just as cambium) is a cylinder of cells that forms new phloem and xylem (see ‘Vascular tissue’ below). New cells formed by the cambium are termed derivatives, while those that remain to divide again are initials. The cork cambium is a meristematic tissue found in woody plants. It is a cylinder of cells, located beneath the bark, which it forms (Fig. 1).
