Plants 20-40 cm tall. Stems branched from base; old branches nearly alternate, prostrate or ascending, brown-green, woody, bearing opposite, shortened, budlike, dwarf branchlets; young branchlets opposite, suberect, gray-green, jointed, glabrous. Leaves opposite, connate. Spikes borne on upper branches, decussate, 5-15 × 2-3 mm. Perianth with 2 lateral segments incurved, outline obdeltoid. Seed brown, ovoid or globose, 0.5-0.75 mm in diam., densely finely papillate. Fl. and fr. Aug-Oct.