Perennial, caespitose, small herbs; rootstock 5-7 mm thick, somewhat fusiform, slender, with persistent leaf bases. Radical leaves narrowly linear, 10-20 mm long, 1.5-2 mm broad, usually entire, sessile or subsessile, glabrous; cauline leaves absent. Scapes (pedicel) 1-flowered, c. as long as the leaves with flower overtopping the leaves. Flowers 6-8 mm across, white, often turning pale violet. Sepals 3-3.5 mm long. Petals 5-6 mm long, c. 2.5 mm broad. Stamens c. 3: 4 mm long; anthers c. 1 mm long. Siliquae 10-15 mm long, c. 1.5 mm broad, glabrous, often slightly curved near the apex; seeds 5-6 in each locule, c. 1.5 mm long, ovoid, brownish, finely reticulated.