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Perennial herb, up to 1 m high. Stems erect, annual or biennial from woody base; patently, greyish hairy in lower parts, less dense higher up. Leaves with basal ones subrosulate, long-petiolate, narrowly ovate, 200 x 6 mm, margins pinnately lobed, lobes opposite or alternate, often pointing backwards, apices obtuse; stem leaves shortly petiolate, fewer, smaller, narrower lobes, upper leaves sessile, glabrous, lobed or dentate. Flowers: in dense, corymbose racemes, elongating in fruit, ebracteate; rachis glabrous or sparsely hairy; petals spathulate or narrowly obovate, 6-8 x 1.5-2.5 mm, yellow; Oct.-Apr. Fruit with pedicels ascending, slender; siliquae linear-filiform, 40-85 x 0.8-1.0 mm, glabrous. May hybridise with S. turczaninowii.
Annual herb, 0.3-1.0 m high, erect. Stems grey-hairy in lower part, less dense higher up. Leaves: lower leaves subrosulate, petiolate, pinnately lobed, lobes opposite or alternate, hairy on both or only lower surface, glabrescent, lanceolate, dentate; cauline leaves petiolate, lobes smaller, fewer, narrower, less hairy, uppermost ones glabrous, sessile, lanceolate or linear-lanceolate, lobed or dentate to subentire. Inflorescence a raceme. Sepals linear-oblong, glabrous or sparsely hairy. Petals spathulate or oblanceolate, clawed, yellow. Flowering time all year. Fruit a siliqua, subterete, linear-filiform, slightly bulged by seed. Seeds ellipsoid.
A cabbage family herb. The stems are erect and hairy. It grows 1 m tall. It can grow for one or two years. The leaves are hairy. The lower leaves are broadly sword shaped and almost in a ring. They have lobes along the stalk. The leaves on the stem are smaller with less lobes. The flowers are small and yellow. They are 6-8 mm long. The fruit are oblong seed capsules. The seeds are narrowly oval and flattened.
Perennial, up to 1 m tall, stems pubescent with simple grey hairs, shooting from woody base. Leaves crowded below, pinnatifid, with up to 12 pairs of lobes. Flowers subcorymbose, yellow. Fruit erect, subterete, 40-85 x 0.8-1 mm.
Grey-hairy perennial with annual stems to 1 m from a woody base. Leaves crowded below, pinnatifid. Flowers subcorymbose, yellow. Fruits erect, subterete.
