Variety of Ludwigia repens with striking dark red leaves and stalk. It makes a fine colour contrast to the green shades in the aquarium. Plant in large groups to enhance the decorative effect, and prune regularly to encourage bushy growth. The plant makes few demands, but if light is insufficient the lower leaves tend to fall off. In strong light the colour becomes more intense. Its scientific name is at present uncertain. See also Ludwigia repens.