Brassica nigra

Annuals; sparsely to densely hirsute-hispid (at least basally, proximally rarely subglabrate). Stems usually branched distally, (widely spreading), 3–20 dm. Basal leaves: petiole to 10 cm; blade lyrate-pinnatifid to sinuate-lobed, 6–30 cm × 10–100 mm, lobes 1–3 each side, (smaller than terminal, terminal lobe ovate, obtuse). Cauline leaves sessile or subsessile; blade (ovate-elliptic to lanceolate, similar to basal, reduced distally and less divided), base tapered, not auriculate or amplexicaul, (margins entire to sinuate-serrate). Racemes not paniculately branched. Fruiting pedicels erect (straight), (2–)3–5(–6) mm. Flowers: sepals 4–6(–7) × 1–1.5 mm; petals yellow, ovate, 7–11(–13) × (2.5–)3–4.5(–5.5) mm, claw 3–6 mm, apex rounded; filaments 3.5–5 mm; anthers 1–1.5 mm. Fruits erect-ascending (± appressed to rachis), smooth, ± 4-angled, 1–2.5(–2.7) cm × (1.5–)2–3(–4) mm; valvular segment 2–5(–8)-seeded per locule, (0.4–)0.8–2(–2.5) cm, terminal segment seedless (linear, narrow), (1–)2–5(–6) mm. Seeds brown to black, 1.2–1.5(–2) mm diam.; seed coat coarsely reticulate, minutely alveolate, not mucilaginous when wetted. 2n = 16.

3-6 hours of sun per day, with protection from intense mid-day sun

Water moderately, allowing the top 3cm to dry out between watering.

Brassica Nigra

Brassica nigra

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