Perennials; (cespitose); caudex branched (with persistent leaves, branches sometimes terminating in sterile rosettes); scapose. Stems unbranched, 0.3-1.3 dm, glabrous throughout. Basal leaves rosulate; sessile; blade obovate to obovate-oblanceolate, 0.4-1 cm × (2-)2.5-4(-5) mm, margins entire, (ciliate, trichomes simple, 0.2-0.5 mm, apex acute), surfaces glabrous. Cauline leaves 0. Racemes 6-14-flowered, ebracteate, elongated in fruit; rachis not flexuous, glabrous. Fruiting pedicels divaricate-ascending, straight, 5-13 mm, glabrous. Flowers: sepals ovate, 2-3 mm, glabrous; petals white, spatulate to obovate, 5-6.5 × 2-3 mm; anthers ovate to oblong, 0.4-0.5 mm. Fruits lanceolate to narrowly oblong, slightly twisted or plane, flattened, 6-12 × 2-3.5 mm; valves glabrous; ovules 8-16 per ovary; style 0.6-1.8(-2.5) mm. Seeds oblong, 1.1-1.4 × 0.7-0.8 mm. 2n = 52.
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