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Perennial herb, prostrate, decumbent or erect and up to 30 cm high, glaucous, hairy, the hairs simple to clavate. Leaves basal and cauline, reducing up stems. Basal leaves 0.5–7.5 cm long, pinnatisect, 7–15-lobed, lobes 1–5 mm wide, deciduous; cauline leaves lanceolate, entire. Inflorescence a dense raceme, leaf-opposed. Sepals equal, 0.5–0.8 mm long. Petals 1–1.5 mm long, white. Stamens 2, median. Stigma subsessile. Silicula 0.8–1 mm long, 1–2 mm wide, emarginate above and below; valves globose, somewhat keeled, warted or reticulate-pitted (rarely almost smooth), corky when old, indehiscent but separating into two 1-or 2-seeded units. Seeds 0.5–0.8 mm long.
Perennial herb, 0.1-0.5 m high, prostrate, decumbent or erect. Stems and branches puberulous with hyaline or clavate hairs. Leaves: basal leaves in a rosette, pectinately 7-15-lobed, lobes semi-lunate, puberulous on upper surface, margins entire or shallowly toothed; cauline leaves lanceolate to oblanceolate, margins entire, with few hairs in lower half. Inflorescence a many-flowered raceme; rachis puberulous. Sepals greenish white or tinged with purple. Petals white. Stamens 2; filaments subulate. Fruit a siliqua, on erect pedicels, keeled, warted or pitted.
Perennial herb, up to 0.5 m high. Stems procumbent, decumbent or erect; puberulous. Leaves petiolate, basally crowded in a rosette; blade of basal ones pectinately 7-15-lobed, lobes semilunate, all or at least upper leaves with margins entire, upper leaves narrowly ovate or narrowly obovate, 5-75 mm x 1-5 mm, shortly petiolate. Flowers: in dense racemes; petals scarcely longer than sepals, ± 0.8 mm long, white; Sep.-Mar. Fruit with pedicels erect; siliquae of ± 2 globose halves, 0.8-1.0 mm in diameter, warted or pitted.
Prostrate or erect perennial herb, up to 300 mm tall, stems bearing ± club-shaped hairs. Leaves in a basal rosette, pinnatisect, 7-15-lobed, lobes semi-lunate, upper leaves entire, 50-75 x 1-5 mm. Flowers small, white. Fruit shaped in 2 ± globose halves, each 0.8-1 mm diam., warted or pitted.
Prostrate, decumbent or erect herb, up to 300 mm tall. Stems puberulous. All or at least upper leaves entire. Fruit of ± 2 globose halves. Flowers white.
