Perennials; (cespitose); caudex branched (with persistent leaves, branches sometimes terminating in sterile rosettes); scapose. Stems unbranched, 0.2–0.9 dm, glabrous throughout. Basal leaves rosulate; sessile; blade oblong to narrowly oblanceolate, 0.2–1 cm × 0.6–2(–4) mm, margins entire, (ciliate, trichomes simple, 0.1–0.5 mm, apex obtuse), surfaces glabrous. Cauline leaves 0. Racemes 3–8-flowered, ebracteate, considerably elongated in fruit; rachis slightly flexuous, glabrous. Fruiting pedicels divaricate-ascending to ascending, straight, 4–13 mm, glabrous. Flowers: sepals oblong, 1.7–2.5 mm, glabrous; petals white, oblanceolate to obovate, 3.5–4.5 × 1.2–2 mm; anthers ovate, 0.3–0.4 mm. Fruits oblong to narrowly so, slightly twisted, flattened, 5–9 × 1.5–3 mm; valves glabrous; ovules 8–16 per ovary; style 0.3–0.9(–1.2) mm. Seeds oblong, 0.9–1.3 × 0.6–0.8 mm. 2n = 32.
