The cell wall formed during growth of a cell is generally called the primary cell wall. Different textural and functional requirements mean that this wall may be subdivided into the “initial” wall and the “growth” wall. The initial wall may be defined as the wall formed after cytokinesis. An alternative term could be “meristematic” wall. The growth wall, laid down during extension of the cell, could also be called the “extension” wall. Initial walls show a random texture of interwoven microfibrils, while the textures of growth walls are composed of lamellae, i.e. monolayers of parallel-oriented microfibrils, or of layers, a pack of parallel-oriented microfibrils.