Annuals or perennials; (short-lived); (glaucous), glabrous or sparsely pubescent basally. Stems branched basally and distally, (1.4-)2-5(-6) dm, (glabrous or sparsely pubescent basally). Basal leaves rosulate; petiole 0.5-4 cm; blade oblanceolate, 2-7 cm × 5-22 mm, margins irregularly dentate. Cauline leaves sessile; blade lanceolate to oblong, (smaller distally), base auriculate, margins entire, (surfaces glabrous). Racemes dense. Fruiting pedicels divaricate-ascending, straight, (5-)6.6-13(-15) mm. Flowers: sepals spreading to reflexed, yellow, 5-7.5(-8.5) × 1.7-2.5 mm; petals yellow, spatulate to broadly oblong, 7-11(-13) × 2-3.5 mm, claw 5-7 mm (to 2 mm wide); median filament pairs 5-6.5 mm; anthers linear, 3-4 mm; gynophore (slender), 2-6(-8) mm. Fruits erect to divaricate-ascending, straight or slightly curved, torulose, 5-7.5(-9) cm × 1.2-1.7 mm; ovules 72-98 per ovary; style subclavate, 0.5-2 mm; stigma 2-lobed. Seeds 1.2-1.5 × 0.6-0.8 mm. 2n = 22.
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