Biennials or, rarely, perennials; caudex simple or branched; not scapose. Stems branched or unbranched, 1–3.9 dm, pubescent throughout or proximally, trichomes simple, 0.3–1.4 mm, often with smaller, 2 (or 3)-rayed ones. Basal leaves (soon withered); rosulate; petiolate; petiole ciliate, (trichomes simple, 0.4–1.1 mm); blade oblanceolate to spatulate, 1–7 cm × 2–12(–26) mm, margins entire or dentate (pubescent as petiole), surfaces pubescent, abaxially with simple trichomes, 0.6–1.1 mm, and stalked, 2- (or 3-)rayed ones, often smaller, adaxially with subsetiform, simple trichomes, 0.5–1.2 mm (rarely with fewer, stalked, 2-rayed ones). Cauline leaves (2–)6–15; sessile; blade lanceolate to ovate or oblong, margins dentate, surfaces pubescent as basal. Racemes 10–51-flowered, ebracteate, elongated in fruit; rachis glabrous or pubescent as stem, not flexuous. Fruiting pedicels horizontal to divaricate, straight, 4–15 mm, glabrous or pubescent, trichomes simple and 2-rayed. Flowers: sepals ovate, 2.5–3.2 mm, pubescent, (trichomes simple and short-stalked, 2-rayed); petals yellow, oblanceolate, 4.5–6.5 × 1.5–2 mm; anthers oblong, 0.8–1.1 mm. Fruits elliptic-lanceolate, twisted (1 turn or plane, flattened, 6–10 × 2–2.5 mm; valves glabrous or sparsely puberulent, trichomes simple, 0.05–0.15 mm; ovules 14–20 per ovary; style (1–)2–3 mm. Seeds oblong, 1.1–1.4 × 0.7–0.9 mm.
