Lepidium monoplocoides

Annual herb to 20 cm high; stems erect, without hairs, sometimes scabrous with small tubercles. Leaves narrowly linear, to 5(–10) cm long, 1–2 mm wide, pinnately lobed to entire, usually with a few dome-shaped tubercles. Inflorescence an elongating raceme. Sepals 1 mm long or less; petals rudimentary to absent; stamens 4, filaments dilated base; stigma sessile. Fruit broadly ovate to circular, 4.5–5.5 mm long, 4–4.5 mm wide, without hairs, wings broad, apically acute and pincer-like, sometimes overlapping over the narrow notch; pedicels 2–3 mm long, flattened. Flowers mostly spring–summer.