In botany, a layer of actively dividing cells (lateral meristem), found within stems and roots, that gives rise to secondary growth in perennial plants, causing an increase in girth. There are two main types of cambium: vascular cambium, which gives rise to secondary xylem and phloem tissues, and cork cambium (or phellogen), which gives rise to secondary cortex and cork tissues (see bark).
Red and white are the traditional colours of South East Asia. The blue canton recalls the British Empire and represents unity. Yellow is the colour of the Sultans of Malaysia. Effective date: 16 September 1963.