Slender herb, branches arising from rather short rootstock; stems decumbent, up to 10 cm. long, very slender, flexuous, glabrate, sparingly branched, produced into racemes. Lvs entire, very narrow; radical up to 3 cm. long, linear-spathulate with scarious sheathing base; cauline c. 2.5 mm. long, linear, sessile or nearly so, minutely ciliate. Racemes short at anthesis, elongating in fr. to c. 4 cm.; fls minute, pedicels very slender. Sepals ovate-suborbicular, 0·5 mm. long; petals narrower, shorter, sts obsolete; stamens 4, glands 6, filiform. Silicles c. 2.5 mm. long, ovate-suborbicular, subacute, slightly compressed, minutely notched; style exserted. Seeds narrow-ovoid, somewhat compressed, yellowish brown, c. 1·5 mm. long.

Perennial. Stems slender, prostrate, flexuous, branching, glabrous, 4-8-(10) cm long. Lvs entire, glabrous or with a few hairs on margin. Basal lvs linear-spathulate, 0.5-2-(3) × 0.3-0.6 cm, with persistent broad sheathing scarious bases. Stem lvs linear-oblanceolate, 1-3 × 0.3-0.5 mm. Racemes flexuous, 1-3 cm long; pedicels spreading, 1-2 mm long at fruiting. Sepals 0.5-1 × 0.3-0.8 mm. Petals white, narrow-spathulate, = sepals or 0. Stamens 4. Silicle ovate, 1.5-2 × 1-1.5 mm; style 0.1 mm long, free from the very narrow wing, = or slightly exceeding the very shallow notch; valves glabrous. Seeds ovoid, pale brown, not winged, c. 1.5 mm long.