Lepidium papillosum

Ephemeral or annual herb to 30 cm high, mature plants often purplish; stems erect, covered with white, inflated, bladder-like hairs. Basal leaves linear-cuneate, to 10 cm long, petiolate, toothed to bipinnately lobed; stem leaves becoming smaller, finally sessile, auriculate and broadly toothed. Inflorescence an elongating raceme. Sepals 1 mm long or less; petals absent; stamens 4; stigma sessile. Fruit ellipsoid with deep apical notch, 4–6 mm long, 3–5 mm wide, with scattered slender hairs, wings broad, apically obtuse, forming deep narrow notch; pedicels 2–3 mm long, papillose on upper surface. Flowers mostly spring.