Dorotheanthus bellidiformis or Mesembryanthemum is a succulent, annual or semi-annual, mat forming plant with fleshy light green leaves and amazingly bright, almost iridescent daisy type flowers in yellow, white red and pink.
They need lots of light and will close up if it is cloudy or if you sprinkle them with the hose.
Best planted en masse to make the most of their spectacular colour in borders, as edging or cascading across low rockeries and over planter edges.