Perennials; caudex branched (branches usually slender, elongated, rhizomatous, some-times with persistent leaf bases); not scapose. Stems usually unbranched, rarely branched, (0.4–)1–3.6(–5.5) dm, often hirsute proximally, trichomes usually simple and 2-rayed, 0.5–1.1 mm, with short-stalked, 3–8-rayed ones, 0.1–0.4 mm (rarely simple trichomes absent distally). Basal leaves rosulate; blade ovate or obovate to oblanceolate, (0.5–)1–4.2(–6) cm × 3–10(–25) mm, margins dentate or denticulate, surfaces pubescent, trichomes short-stalked, cruciform, or (2–)4–6-rayed, 0.2–0.6 mm (principal rays usually simple, rarely 1 or 2 with a lateral branch, sometimes appearing to 10-rayed). Cauline leaves (2 or) 3–7(–12); sessile; blade ovate, margins entire or dentate, surfaces pubescent as basal or adaxially with some simple trichomes. Racemes (6–)8–20(–35)-flowered, ebracteate, elongated in fruit; rachis not flexuous, pubescent as stem. Fruiting pedicels divaricate or ascending, straight, (2–)4–8(–13) mm, pubescent as stem. Flowers: sepals ovate, 2–3 mm, pubescent, (trichomes simple); petals white, obovate, 4–6 × 2–3 mm; anthers ovate, 0.3–0.5 mm. Fruits ovate to broadly oblong or lanceolate, slightly twisted or plane, flattened, (5–)7–12 × 2.5–4.5 mm; valves pubescent, trichomes simple and short-stalked, 2–4-rayed, 0.1–0.4 mm; ovules 16–28(–30) per ovary; style 0.2–0.6(–0.8) mm, glabrous. Seeds oblong, 1–1.5 × 0.7–1 mm. 2n = 64, 80.
