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Erect annual herbs 20-50 cm high, branched. Stems sparsely puberulous, especially in the lower part, glabrescent. Basal leaves rosulate but dying off soon, petiolate, the petiole expanded at the base, auriculate-amplexicaul; up to 15 cm long, lyrate-pinnatipartite with 3-5 pairs of ± ovate-lanceolate, sharply dentate-lobulate lateral lobes and a ± ovate, lacerate-lobulate or serrate-dentate terminal lobe. Stem leaves similar but smaller with fewer and narrower segments. Upper leaves sessile, auriculate-amplexicaul, ± lacerate-pinnatifid with narrow lobes. Racemes terminal, dense in flower, lax in fruit. Sepals 1.5-2.2 mm long. Petals 2-2.7 mm long, oblanceolate. Ovary oblong with a short, stout style and a large, capitate stigma. Fruiting pedicels 2-3.5 mm long, wide-spreading. Siliquae 1-1.8 cm long, about 2 mm in diameter, subcompressed; valves reticulately veined; style 0.5-1 mm long, ± obconical or clavate. Seeds numerous, 0-5 mm in diameter.
A herb. It grows from seeds each year. It has a fine taproot. The leaves are in a ring. They have lobes and are divided. They are 3-11 cm long by 2 cm wide. The segments are in 4-6 pairs. There can be rounded teeth along the edge. The end leaflet is usually the largest. The flowers are in dense groups in the axils of leaves. The fruit is a long seed capsule. It is 7-15 mm long by 1 mm wide. It splits open into 2 valves. There are many seeds.
Leaves sessile, up to about 8 x 5 cm., somewhat amplexicaul at the base, obovate, oblong or ovate in outline, pinnatipartite or lyrate-pinnatipartite, lobes often toothed or crenate, glabrous or very sparsely pubescent.
Erect, annual herb, up to 500 mm tall. Stems leafy. Leaves lyrate-pinnatipartite. Petals 2.0-2.7 mm long. Flowers yellow.
Flowers yellow, pedicellate, pedicels 1.5–3 mm. long, in terminal racemes up to 15 cm. long.
Ovary 1.5 x 0.8 mm., ellipsoid, with a short, stout style and capitate stigma.
Silique up to 18 x 2 mm., cylindric, glabrous, style persistent, 0.5–1 mm.
Annual herb with branched, erect, glabrous stems up to 40–50 cm. tall.
Stamens 6, filaments 1.6–2 mm. long, anthers 0.5 mm. long.
Seeds 2-seriate, about 0.7 mm. in diam., lenticular.
Petals 2–2.5 x 0.7–0.8 mm., narrowly oblong.
Sepals 1.5–2 x 1 mm., oblong.
