Herbs or subshrubs, perennial, with thickened and often woody rootstock. Stems prostrate, sometimes forming dense mounds, 10–50 cm, glabrous. Leaves opposite; stipules distinct, subulate-filiform, 0.3–0.9 mm, pilose; petiole 0.3–1.2 mm, glabrous; blade usually ovate, rarely oblong, 2–7 × 1–5 mm, base usually asymmetric, rounded to hemicordate, margins entire, apex usually obtuse, rarely acute, surfaces glabrous; only midvein conspicuous. Cyathia solitary at distal nodes; peduncle 0.1–0.6(–2.2) mm. Involucre obconic to campanulate, 1–1.4 × 0.9–1.3 mm, glabrous except for pilose lobes; glands 4, pink to maroon, circular, 0.3–0.4 × 0.3–0.4 mm; appendages absent. Staminate flowers 40–50. Pistillate flowers: ovary glabrous; styles 0.3–0.6 mm, 2-fid 1/2 length. Capsules ovoid to oblate-ovoid, 1.6–1.7 × 1.6–1.9 mm, glabrous; columella 1.2–1.5 mm. Seeds whitish to light brown, ovoid, 4-angled in cross section, 1.2–1.4 × 0.6–0.8 mm, rugose or with indistinct, irregular, low transverse ridges.
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