Plants frequently reddish or purplish tinged; homophyllous or, rarely, heterophyllous. Stems prostrate, often zigzagged, branched mostly from base, wiry, 2-20(-40) cm. Leaves often opposite at proximal nodes; ocrea 2-3(-4) mm, proximal part funnelform, distal part soon lacerate, nearly completely deciduous; petiole 1-3.4 mm; blade usually reddish or purple tinged, obovate to oblanceolate, 3-12(-25) × (1.5-)2.5-4.5(-8) mm, margins flat, apex rounded to obtuse; stem leaves 1-1.5(-2) times as long as adjacent branch leaves, distal leaves overtopping flowers. Inflorescences axillary; cymes ± uniformly distributed, 2-6-flowered. Pedicels enclosed in ocreae, 0.5-1.5 mm. Flowers closed or semi-open; perianth 1.5-2.3(-3) mm; tube 28-49% of perianth length; tepals partially overlapping, green, margins pink, rarely white, petaloid, not keeled, oblong, ± outcurved, usually not cucullate; midveins unbranched or branched; stamens 5. Achenes exserted from perianth, dark brown to purple, ovate-lanceolate, 2-3-gonous, 1.4-1.6(-2.2) mm, faces unequal, apex not beaked or obscurely beaked, edges straight or concave, shiny or dull, smooth to roughened; late-season achenes common, 2-3.5 mm.
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