Perennials; (loosely cespitose); caudex branched (somewhat surculose, with persistent leaf bases, branches sometimes terminating in sterile rosettes); scapose. Stems unbranched, 0.3-1.2 dm, glabrous throughout. Basal leaves rosulate; petiolate; petiole (persistent, midvein prominent), ciliate, (trichomes sparse, short-stalked, 2-4-rayed, sometimes with simple ones, 0.2-0.5 mm); blade (somewhat fleshy), oblanceolate or spatulate to obovate, 0.3-1.5 cm × 1.5-5 mm, margins entire, (pubescent as petiole), surfaces glabrous. Cauline leaves 0. Racemes 2-6-flowered, ebracteate, elongated in fruit; rachis not flexuous, glabrous. Fruiting pedicels divaricate-ascending, straight, 3-8 mm, usually glabrous, rarely trichomes simple. Flowers: sepals ovate, 3-4 mm, glabrous; petals yellow, oblanceolate, 5-7 × 1.3-2 mm; anthers oblong, 0.7-0.9 mm. Fruits lanceolate to elliptic-lanceolate, plane, strongly flattened, 10-23 × 4-6 mm; valves (each with distinct midvein), glabrous; ovules 8-12 per ovary; style 2-3 mm. Seeds (broadly winged), orbicular, 3-4.5 in diam.; (wing 1-1.5 mm wide).
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