Lepidium virginicum

Annuals; puberulent, (trichomes cylindrical). Stems simple from base, erect, branched distally, (0.6–)1.5–5.5(–7) dm. Basal leaves (withered by anthesis); not rosulate; petiole 0.5–3.5 cm; blade obovate, spatulate, or oblanceolate, (1–)2.5–10(–15) cm × 5–30(–50) mm, margins pinnatifid to lyrate or dentate. Cauline leaves shortly petiolate; blade oblanceolate or linear, 1–6 cm × (1–)3–10 mm, base attenuate to subcuneate, not auriculate, margins serrate or entire. Racemes considerably elongated in fruit; rachis usually puberulent, rarely glabrous, trichomes curved, cylindrical. Fruiting pedicels divaricate-ascending to nearly horizontal, straight or slightly recurved, (slender, terete or flattened), 2.5–4(–6) × 0.15–0.4 mm, puberulent adaxially or, rarely, throughout or glabrous. Flowers: sepals oblong to ovate, (0.5–)0.7–1(–1.1) × 0.4–0.7 mm; petals (rarely rudimentary), white, spatulate to oblanceolate, 1–2(–2.5) × 0.3–0.8(–1) mm, claw undifferentiated or to 0.8 mm; stamens 2, median; filaments 0.6–1.2 mm; anthers 0.1–0.2 mm. Fruits orbicular or nearly so, 2.5–3.5(–4) mm diam. (widest at middle), apically winged, apical notch 0.2–0.5 mm deep; valves thin, smooth, not veined, glabrous; style 0.1–0.2 mm, included in apical notch. Seeds ovate, 1.3–1.9(–2.1) × 0.7–1(–1.2) mm; (cotyledons accumbent or incumbent).

Lepidium Virginicum

Lepidium virginicum

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