Herbs, annual, 10–40 cm, glabrate. Stems spreading to erect, few-branched. Leaves alternate, spreading; stipular glands moderately developed at proximal nodes, absent on distal nodes; blade linear, 5–30 × 0.5–1.5 mm, margins entire, not ciliate, apex acute. Inflorescences panicles. Pedicels 5–13 mm. Flowers: sepals deciduous, linear-lanceolate to lanceolate, 4–12 mm, margins narrowly scarious, glandular-toothed, apex acute to acuminate; petals yellow to orange salmon, faintly maroon banded near base, obcordate, 7–12 mm; stamens 4–5 mm; anthers 1–1.5 mm; staminodia absent; styles connate nearly to apex, 3–4 mm; stigmas dark, capitate. Capsules ovoid, 3.3–4 × 2.6–3.1 mm, apex obtuse, dehiscing into 5, 2-seeded segments, segments persistent on plant, false septa complete, proximal part membranaceous, not terminating in loose fringe, distal part cartilaginous, margins not ciliate. Seeds 2.5–2.7 × 1.1 mm. 2n = 30.
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