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Stems erect, simple, 1.8-5.5 dm, glabrous to sparsely farinose. Leaves nonaromatic; petiole 0.3-4.5 cm, usually shorter than leaves; blade distinctly 3-lobed, narrowly ovate to elongate, (1.4-)2.7-6.2 × (0.5-)1.2-2.5 cm, base cuneate, margins toothed or nearly entire, with pair of basal lobes, apex obtuse to subacute, sparsely farinose. Inflorescences glomerules in terminal and lateral spikes and panicles, 11 cm; glomerules irregularly globose, in different stages of development, 1.7-1.9 mm diam.; bracts absent or leaflike. Flowers: perianth segments 5, connate at base into 0.3 mm tube; lobes ovate, 0.5-0.9 × 0.5-0.8 mm, apex acute, farinose, keeled, covering fruit at maturity; stamens 5; stigmas 2, 0.3 mm. Utricles depressed-ovoid; pericarp nonadherent, smooth. Seeds lenticular, 0.9-1 mm diam.; seed coat black, honeycomb-pitted. 2n = 18.
It is a herb. It grows 20-50 cm tall. The stems are green and have ridges along them. The leaf blade is oval and 3-5 cm long by 1-4 cm wide. They usually have 3 lobes. The flowers are in round groups spreading along the ends of the branches. The seeds are black and 1 mm across.
