Perennials or, rarely, biennials; (caudex slender). Trichomes of leaves 2-5-rayed. Stems erect, unbranched or branched (few to several) basally, 0.4-6.5 dm. Basal leaves: blade spatulate to broadly oblanceolate, 2.5-7 cm × 3-10 mm, base attenuate, margins dentate or subentire, apex often obtuse, (surfaces pubescent adaxially, trichomes 2 or 3-5-rayed). Cauline leaves (distal) sessile; blade margins often entire. Racemes considerably elongated in fruit. Fruiting pedicels divaricate-ascending, slender, narrower than fruit, 4-12 mm. Flowers: sepals linear-oblong to oblong, 8-12 mm, lateral pair saccate basally; petals yellow, broadly obovate to suborbicular, 15-22 × 3.5-6 mm, claw 8-14 mm, apex rounded; median filaments 7-14 mm; anthers linear, 3-4 mm. Fruits erect to ascending, narrowly linear, straight, torulose, 3.8-14 cm × 1.2-3 mm, latiseptate, not striped; valves with prominent midvein, pubescent outside, trichomes 2 or 3 (or 4)-rayed, glabrous inside; ovules 26-44 per ovary; style cylindrical, slender, (1.5-) 2-5.5 mm, sparsely pubescent; stigma subentire to slightly 2-lobed, lobes as long as wide. Seeds ovoid, 2-3.4 × 1-2 mm; not winged or, rarely, winged distally. 2n = 36.
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