Plants mostly sparsely to densely pubescent, trichomes sessile, 3–5-rayed, stellate (base of plant often mixed with much longer, simple ones). Stems (0.2–)1–5(–7) dm. Basal leaves: petiole 0.5–4(–6) cm; blade oblong or oblanceolate, (0.5–)1.5–10(–15) cm × 2–25(–50) mm, base cuneate or attenuate, apex acute or acuminate. Cauline leaves: blade narrowly oblong, lanceolate, or linear, 1–5.5(–8) cm × 1–15(–20) mm, base sagittate, amplexicaul, or, rarely, auriculate. Fruiting pedicels usually straight, (0.3–)0.5–1.5(–2) cm, glabrous. Flowers: sepals green or reddish, 1.5–2 × 0.7–1 mm (margins membranous); petals (1.5–)2–4(–5) × 1–1.5 mm; filaments 1–2 mm; anthers to 0.5 mm. Fruits (0.3–)0.4–0.9(–1) cm × (2–)3–7(–9) mm, base cuneate, apex emarginate or truncate; valves each with subparallel lateral veins; style 0.2–0.7 mm. Seeds brown, 0.9–1.1 × 0.4–0.6 mm. 2n = 32.
