Perennials; (not stoloniferous); caudex branched (covered with persistent, dry leaves and midveins); scapose. Stems unbranched, 0.4-1.7 dm, glabrous or pubescent, trichomes simple, 0.2-0.9 mm, and fewer, 2-4-rayed, 0.1-0.6 mm. Basal leaves (imbricate); rosulate; petiolate; petiole (base thickened), ciliate throughout; blade linear to linear-oblanceolate, 0.5-1.5(-2.2) cm × 1-2.5(-4) mm, margins entire (thickened, ciliate, trichomes simple and 2-rayed, to 1.1 mm), surfaces pubescent, abaxially with simple trichomes, 0.3-1 mm, and 2-4-rayed ones, 0.1-0.5 mm, adaxially similar, or with only simple trichomes, (midvein prominent, thickened). Cauline leaves 0. Racemes (2-)4-12-flowered, ebracteate, usually elongated in fruit; rachis not flexuous, glabrous or pubescent as stem. Fruiting pedicels divaricate-ascending, usually straight, rarely curved upward, 6-13 mm, glabrous or pubescent as stem. Flowers: sepals ovate, 2-3.5 mm, pubescent, (trichomes simple and short-stalked, 2-rayed); petals pale to bright yellow, obovate, 3.5-6 × 2-3.5 mm; anthers ovate, 0.4-0.5 mm. Fruits elliptic to lanceolate, 5-11 × 3-4 mm, plane, flattened; valves glabrous or puberulent with simple and short-stalked, 2-rayed trichomes, 0.07-0.3 mm; ovules 12-20 per ovary; style 0.4-0.9 mm (stigma about as wide as style). Seeds ovoid, 1.2-1.4 × 0.8-1 mm.
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