It is a perennial plant, commonly in tropical areas, it has a fast moving small leaves, so it has another name dancing plant, grow 2 to 4 feet tall, the leaves are arranged oppositely, broad, oblong or lance-shaped, leaflets lanceolate, up to 10 centimeters long, flower are tiny, up to 9 millimeters long, blue in color, sepals  are cup, flowering August to September.Fruit is pod, long, up to 4.4 cm and 6.5 mm broad, slightly curved.