Herbs, 1–4.5 dm. Stems erect, brownish red to maroon-green, apex never flexuous. Leaves: petiole 0.5–2 mm; blade acicular to narrowly oblong, 1–6 × 0.2–0.6 cm, base acute to subcuneate, margins usually entire, sometimes serrulate, apex acute to obtuse. Inflorescences terminal (appearing leaf opposed) or axillary, glands absent, staminate flowers 2–3(–5) per raceme; staminate bracts 2–2.5 mm. Pedicels: staminate 1–2 mm, persistent base 0.5–0.8 mm, pistillate 2–3 mm in fruit. Staminate flowers: sepals 3–4(–5), green, 1–2.5 mm; stamens 3–4, filaments 1.2–1.4 mm, connate basally. Pistillate flowers: sepals lanceolate, 1.5–2 mm; styles connate 1/5 length; stigmas undulate to slightly papillate. Capsules 4–5 mm wide. Seeds mottled dark olive brown, 2.5–3 mm.
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