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DescriptionMonoecious annual herb, erect or ascending, often branched from the base, 10-60 cm tall. Stipules c. 1.5 × 0.5 mm, narrowly lanceolate. Leaves 1.5-4 cm, ovate or elliptic, incised-dentate; the lower shorter than their petioles; petiole 3-5 cm long. Inflorescences dense at first, becoming lax and spike-like and up to 2.5 cm long, bisexual. Achene laterally flattened.