Coloured light micrograph of a cross section of a poppy (Papaver rhoeas) bud. The central structure (yellow/green) comprises of the carpels and ovaries (female reproductive elements), this in turn is surrounded by a (purple/black) zone comprising of the stamens and anthers (male reproductive elements). These are encircled by whorls of petals (red) and the entire structure is enclosed by an outer calyx (green). Magnification: x8 at 10cm wide.