Floating Lace Plant is a small aquatic herb found in Sri Lanka and India.
Its leaves are mostly floating, with only the long slender petiole below
the surface of the water. Leaves are narrow-oblong or lance-shaped. Flowers
are borne in dense, narrow spikes. The stalk carrying the spike is 10-45 cm
long. Spike 3-7 cm, usually dense flowered. Floating Lace Plant is a
popular plant in Western countries for use in aquariums.