Brassica rapa

Annuals or biennials; (roots fleshy or slender); (green to slightly glaucous), glabrous or sparsely hairy. Stems unbranched or branched distally, 3–10 dm. Basal leaves: petiole (winged), (1–)2–10(–17) cm; blade ± lyrate-pinnatifid to pinnate to pinnatisect, (5–)10–40(–60) cm × 30–100(–200) mm, (margins sinuate-dentate, sometimes ciliate), lobes 2–4(–6) each side, (terminal lobe oblong-obovate, obtuse, large, blade surfaces usually setose). Cauline leaves (middle and distal) sessile; base auriculate to amplexicaul, (margins subentire). Racemes not paniculately branched, (with open flowers overtopping or equal to buds). Fruiting pedicels ascending to spreading, (5–)10–25(–30) mm. Flowers: sepals (3–)4–6.5(–8) × 1.5–2 mm; petals deep yellow to yellow, obovate, 6–11(–13) × (2.5–)3–6(–7) mm, claw 3–7 mm, apex rounded; filaments 4–6(–7) mm; anthers 1.5–2 mm. Fruits ascending to somewhat spreading, torulose, terete, (2–)3–8(–11) cm × 2–4(–5) mm; valvular segment with 8–15 seeds per locule, (1.3–)2–5(–7.5) cm, terminal segment seedless, 8–22 mm. Seeds black, brown, or reddish, 1.1–2 mm diam.; seed coat very finely reticulate-lightly alveolate, not mucilaginous when wetted. 2n = 20.

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

Brassica Rapa

Brassica rapa

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