Perennial herb, up to 0.6 m high. Stems annual, erect, glabrous. Leaves crowded near base or plants tussock-forming with leaves in a dense rosette; petiolate; blade filiform to strap-shaped, or lobed in upper half with lobes short, 3-5 mm long, or up to 30 mm long, or finely to coarsely pinnately lobed, somewhat fleshy, apex acute or acuminate, midribs of basal leaves persistent. Flowers: in accrescent racemes, peduncles 80-350 mm long; petals narrowly obovate to obovate-circular, 6.5-13.5 mm long, clawed; white to purple; Oct.-Jan. Fruit with pedicels recurved; siliquae linear, 25-80 x 2.5-5.0 mm, flat, faintly reticulate.
Perennial dwarf shrub, up to 0.6 m high, erect, glabrous, tussock forming, leaves in a dense rosette. Stems: lower part reddish or purplish. Leaves stipulate, filiform to strap-shaped or lobed in upper half; lobes short, long or pinnately lobed, entire. Flowers white, pink to violet. Sepals oblong, outer 2 cucullate, horn-tipped; inner 2 saccate, margins broad, membranous. Petals narrowly obovate to obovate-circular, rounded, claw thick, minutely papillate. Flowering time Sept.-Mar. Fruit broadly linear, margins straight, faintly reticulate, flat. Seeds subcircular or broadly oblong, winged.
Shrublet, up to 600 mm tall, lower part of annual shoots often reddish. Leaves ± crowded at base, ± strap-shaped, entire to few-lobed in upper half to pinnately lobed, 30-200 x 0.5-4 mm, often ± fleshy. Flowers large, white, pale mauve or pink, rarely purple or blue, crowded near apex, ovules 14-30. Fruit broadly linear, 25-80 x 2.5-5 mm, margins straight. Flowering Aug.-Oct. (in W), Sept.-Jan. (in E).
Tussock-forming shrublets to 60 cm with annual stems from a woody base. Leaves stipulate, filiform or lobed above. Flowers white, pink to violet, ovules 14-30. Fruits broadly linear, 25-80 mm long.
Erect, glabrous dwarf shrub without axillary glands, up to 0.6 m high. Lower leaves often in a rosette, petiolate. Petals narrowly obovate to obovate-circular, clawed. Flowers white to purple.