Perennials; (cespitose, not pulvinate); caudex simple or branched; rarely scapose. Stems unbranched, 0.3-1.7 (-2.4) dm, pubescent, trichomes 4-10-rayed (rays sometimes branched), 0.1-0.3 mm, with fewer, simple ones, to 0.7 mm. Basal leaves rosulate; petiolate; petiole base ciliate, (trichomes simple, 0.2-0.8 mm); blade oblanceolate to narrowly obovate, 0.4-2.3(-3) cm × 1.5-6.5 mm, margins usually entire, rarely with 1 tooth on each side, surfaces densely pubescent with minutely stalked, 8-12-rayed, stellate trichomes, 0.2-0.4 mm, sometimes with coarser, simple or 2-rayed ones, (midvein distinct abaxially). Cauline leaves 0 or 1(-3); sessile; blade ovate or oblong to lanceolate, margins entire, surfaces pubescent as basal. Racemes 3-18(-25)-flowered, ebracteate, elongated in fruit; rachis not flexuous, pubescent as stem. Fruiting pedicels divaricate-ascending or ascending, straight, (1.5-)2-6 mm, pubescent, trichomes stalked, stellate, and, sometimes, simple. Flowers: sepals ovate, 2-2.5 mm, pubescent, (trichomes short-stalked, 2-or 3-rayed, and simple); petals white, spatulate to obovate, 3.5-6 × 1.8-2 mm; anthers ovate, 0.3-0.4 mm. Fruits oblong to lanceolate, plane, slightly flattened, (5-)6-11 × 2-3 mm; valves pubescent, trichomes short-stalked, 2-5-rayed (some rays branched), 0.05-0.3 mm; ovules 20-32 per ovary; style 0.1-1 mm (stigma distinctly wider than style). Seeds ovoid, 0.8-1.1 × (0.6-)0.7-0.8 mm. 2n = 80.
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