Perennials; (sometimes cespi-tose); caudex simple or branched (with persistent leaf bases); usually scapose. Stems unbranched, (0.2-)0.3-1(-1.3) dm, glabrous. Basal leaves rosulate; petiole (obscure), margin ciliate, (trichomes simple or 2-rayed, 0.25-0.6 mm); blade linear to oblanceolate or narrowly obovate, (0.3-)0.4-1.2(-1.6) cm × 1-3(-4) mm, margins usually entire, rarely toothed, surfaces abaxially pubescent or glabrous, trichomes simple, sometimes with fewer, short-stalked, 2-rayed ones, (midvein prominent), adaxially often glabrous. Cauline leaves 0-2; sessile; blade oblong to ovate, margins entire, (ciliate). Racemes (2 or) 3-11 (-14)-flowered, usually ebracteate, rarely proximalmost flowers bracteate, elongated in fruit; rachis not flexuous, glabrous. Fruiting pedicels divaricate-ascending, often straight, (1-)2-5(-6) mm, glabrous. Flowers: sepals (green or purplish), ovate, 1.2-2.2 mm, glabrous or pubescent, (trichomes simple); petals white, spatulate, 2-2.5 × 0.8-1.5 mm; anthers ovate, 0.2-0.25 mm. Fruits elliptic-lanceolate to oblong, plane, flattened, 3-8 (-9) × 1.5-2 mm; valves glabrous; ovules 12-24 per ovary; style 0.05-0.2(-0.3) mm. Seeds oblong to elliptic, 0.8-1 × 0.5-0.6 mm. 2n = 16.
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