A slender, much branched, erect, smooth, annual herb 10 to 15 centimeters in height, and with four-angled stems. Leaves are opposite and very thin; the lower ones are lanceolate, 4 to 7 centimeters in length, pointed at both ends; the upper leaves are much smaller and ovate, and gradually merge into bracts. Flowers have slender stalks, are 1 centimeters in length, and are borne in lax, has slender teeth. The corolla is white and has 4 lobes, 2 of which are loner than the others. Fruit is an oblong capsule, and as long as the calyx.

Tonic, laxative, an alternative, and a nerve tonic (whole plant).

Bureau of Plant Industry

The entire plant is decocted and used against stomach pain.