Perennials or subshrubs; (woody base aboveground); (glaucous), glabrous throughout. Stems several from base, erect or ascending, branched (several) distally, 2-5.5(-10) dm. Basal leaves absent. Cauline leaves sessile; blade linear and undivided or pinnately lobed (lobes 3-7(-9), linear), (1.5-)2.2-8.4(-10.2) cm × (0.7-)1-2.8(-4.2) mm, base attenuate, not auriculate, margins entire, (similar, smaller distally). Racemes (panicles), elongated in fruit. Fruiting pedicels divaricate-ascending to horizontal, usually straight, rarely slightly curved, (terete), (3.5-)4.3-7.6 (-8.5) × 0.15-0.2 mm. Flowers: sepals obovate, 1.5-2.5 (-3) × 1-1.6 mm; petals white, spatulate, 2.5-4.2 × 1.5-2.2 mm, claw 1-2 mm; stamens 6; filaments 1.8-3 mm; anthers 0.4-0.7 mm. Fruits obovate to orbicular, (4-)4.5-7(-8) × 4.2-7(-8) mm, apically winged, apical notch (0.1-)0.2-0.5 mm deep; valves thin, smooth, not veined; style 0.2-0.8(-1) mm, exserted beyond apical notch. Seeds ovate, 1.6-2.1 × 0.9-1.1 mm. 2n = 32.
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