Herbs perennial, (0.5-)1-2 m tall, tomentose above. Root to 15 cm in diam. Trichomes flattened, crisped. Caudex considerably thickened. Stems erect, branched above. Basal and lower cauline leaves oblong or oblanceolate in outline, pinnatisect, 15-60 cm, glabrous or sparsely pubescent; lateral lobes 6-12 on each side, oblong or lanceolate, 6-20 × 1-5 cm, base decurrent, margin serrulate, sinuate-dentate, or subentire, apex acuminate. Upper cauline leaves auriculate, similar to lower ones but gradually reduced in size. Fruiting pedicels slender, 1.5-4 cm, strongly recurved, pubescent. Sepals yellowish, oblong, 3.5-5(-6) × 1.5-2.5 mm, sparsely pubescent or glabrous. Petals pale yellow, oblong or obovate, entire, 4-6(-7) × 2-4(-6) mm, base cuneate, apex rounded to subacute; claw 1-2 mm. Stamens (8-)12-16(-24); filaments 3.5-5 mm; anthers narrowly oblong, 1-1.3 mm. Fruit halves suborbicular to obovate-orbicular, 3-4 × 2.5-3 cm; wings 5-10(-18) mm wide; replum 7-16 mm; locule 1.5-2(-2.8) × 1.2-1.7 cm. Seeds brown, broadly ovate, 1.4-1.7 × 0.7-1.1 cm. Fl. May-Aug, fr. Aug-Oct.
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A cabbage family herb which keeps growing from year to year. It grows to about 2 m high. The lower leaves are deeply divided. The lobes occur in 5-9 pairs. They are 10-20 cm long and oblong to sword shaped. It has pointed teeth. The upper leaves are narrow and without teeth. The flowers are yellow. The fruit is winged and with one seed.
It is a subtropical plant. It grows on slopes, rocky areas, along streams between 3000–4600 m in China. It grows in Nepal between 2700-4500 m altitude. It grows on open slopes in light forests.
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Alpine meadows and open forests, 3000-4300 metres.
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