An erect, aromatic, nearly glabrous herb with green or purplish branches. Leavessimple, opposite, ovate, acute, entire or toothed, base cuneate, glabrous on bothsurfaces. Flowers white, or pale purple in simple or much branched racemes oftenthyrsoid. Nutlets ellipsoid, black and pitted. (India) Herb 30-90cm high, stem purple, leaf opposite, flower white (Indonesia)