Herbs annual. Stems branched at base, ca. 8 cm; branches diffuse. Leaves opposite or 3-verticillate, less often alternate; leaf blade obovate-spatulate, 7-12 × 3-6 mm, base attenuate and spurred, apex obtuse to rounded. Cyme 2-branched, divaricate, lax. Flowers sessile, unequally 5-merous. Sepals oblanceolate, ca. 3.5 × 2 mm, apex acuminate. Stamens 10; anthers yellow, globose, ca. 0.3 × 0.2 mm, base subcordate, apex truncate. Nectar scales opposite carpels. Carpels divergent at a definite angle at maturity, oblong, ca. 3 × 2 mm, base connate. Seeds yellow, narrowly oblong, ca. 0.6 mm. Fl. May-Aug, fr. Sep-Dec.
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