Herbs annual, 50-80 cm tall. Stem erect, much branched above, terete below, green striate and slightly obtusely ribbed above; branches obliquely spreading, slender. Petiole slender; leaf blade of lower and middle leaves ovate-triangular to ovate-rhombic, usually 3-4 × 2-3 cm, 2-3 × as long as petiole, slightly farinose abaxially, not farinose adaxially, base broadly cuneate, margin distinctly 3-lobed, apex acute; middle lobe triangular, lateral lobes near base, usually 2-toothed; upper leaves smaller, leaf blade subhastate. Glomerules borne on upper branches, arranged into slender, spikelike panicles. Flowers bisexual. Perianth segments 5, slightly spreading in fruit, ovate, abaxially keeled, farinose. Pericarp dark brown, adnate to seed. Seed horizontal, black, very slightly lustrous, lenticular, 1.3-1.5 mm in diam., distinctly radially lineate. Fl. and fr. Jul-Sep.
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A herb. It grows 50-80 cm tall. The stem is erect and much branched. The lower leaves are oval or triangle shaped. The flowers are in slender spike like groups on the branches.
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