Edible parts - Plant, Leaves
An erect annual herb. It grows 50 cm tall. The stems are 4 sided and purplish-green. They are hairy. The stems come from a taproot. The leaves are simple and opposite. They are oval or oblong and taper to both ends. They are light green and hairy. The flowers are small and pink. They are 15 mm long. The fruit is a stalked capsule. It is flattened and on the sides and has 4 seeds.
A tropical plant.