Spineless cactus of northern Mexico and the southwestern USA. It has white or pink flowers. Its buttonlike tops contain mescaline, which causes hallucinations and is used by American Indians in religious ceremonies. (Lophopora williamsii, family Cactaceae.)
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.