Herbs annual. Stems erect, 10-30(-50) cm tall, branched at base, glabrous, striate. Petioles 1.5-3 cm; leaf blade greenish abaxially, green adaxially, cordate, 1-3 × 0.8-2.5 cm, abaxially small papillate along veins, adaxially glabrous; ocrea 3-5 mm, membranous, glabrous, apex acute, oblique. Inflorescence geminate, capitate, dense; peduncle dichotomous; bracts funnel-shaped, 2.5-3 mm, apex acute, glabrous, each 2-or 3-flowered. Pedicel 3-4 mm, slender, apex articulate. Perianth pinkish; tepals elliptic, 2-2.5 mm. Stamens included. Stigmas capitate. Achenes exceeding persistent perianth, brown, slightly shiny, narrowly ovoid, trigonous, 3-4 mm. Fl. Jul-Aug, fr. Aug-Sep.
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