Biennials or perennials; (caudex thickened, usually simple, rarely branched). Trichomes of leaves 2-(or 3-) rayed. Stems erect, unbranched or branched basally and/or distally, (0.8-) 1.5-7(-9.4) dm. Basal leaves: blade oblanceolate to linear-oblanceolate, 2-7 cm × 2-7 mm, base attenuate, margins entire or denticulate, apex acute. Cauline leaves sessile; blade margins entire or denticulate. Racemes (densely flowered), elongated or not in fruit. Fruiting pedicels usually ascending, rarely divaricate-ascending, stout, slightly narrower than fruit, (often crowded), 4-7(-10) mm. Flowers: sepals linear-oblong, 5-8 mm, lateral pair saccate basally; petals yellow, narrowly obovate to spatulate, (8-)10-15 × (2-)2.5-4 mm, claw 6-9 mm, apex rounded; median filaments 6-10 mm; anthers narrowly linear, 1.7-2 mm. Fruits suberect to ascending, (subappressed to rachis or not), narrowly linear, straight, not torulose, 2.5-5.8(-6.4) cm × 1.8-2.5 mm, slightly 4-angled, not striped; valves with somewhat prominent midvein, pubescent outside, trichomes 2-4-rayed, glabrous inside; ovules 40-56 per ovary; style stout, 0.5-1.5 mm, moderately to sparsely pubescent; stigma strongly 2-lobed, lobes as long as wide. Seeds ovoid to oblong, 1.5-2 × 1-1.2 mm; not winged. 2n = 54.
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