Annual, up to 1 m tall herb, glabrous or young parts rarely minutely papillose. Stem ribbed, reddish. Leaves petiolate, petiole 0.5-2 cm long, grooved lower leaves with long petiole, upper ones subsessile; lamina triangular or sagittate, cordate, basal lobes rounded to acuminate, 1.5-10 x 1-8 cm. Ochrea 2-3 (-5) mm long, hyaline, pubescent near the base. Inflorescence axillary and terminal, pedunculate, many-flowerd corymbose cyme. Flowers pink or red, pedicelled, c. 1 mm across. Perianth segments 5-partite, ovate or oblong-ovate c. 3 x 2 mm broad. Stames 8, unequal, alternating with glands, c. 1.5 mm long. Ovary 3-angled; styles 3, as long as ovary. Nuts deeply 3-angled, angles acute, brown, smooth, narrowed at both the ends, 4-8 x 2.5-5 mm broad.