Perennials; (terrestrial or of wet habitat, not submerged, with underground rhizomes); gla-brous or pilose, (trichomes crisped). Stems decumbent, much-branched distally, 0.5-2.5 (-3) dm, (glabrous or pilose proximally). Basal leaves not rosulate; blade margins subpinnatifid to sinuate. Cauline leaves sessile or shortly petiolate; blade broadly oblanceolate to oblong, (lateral lobes oblong to ovate), 1-3.2 cm × 3-12 mm, base not or minutely auriculate, margins subpinnatifid to sinuate, or (lateral lobes) usually entire, (surfaces pilose or adaxially glabrous). Racemes (subumbellate), not or slightly elongated. Fruiting pedicels erect to divaricate-ascending, straight, 3-7(-9) mm, (pilose). Flowers: sepals (persistent), erect, oblong or ovate, 2-3 × 1-1.5 mm; petals yellow, spatulate to oblanceolate, 2.5-3.5 × 1-1.7 mm; median filaments 2-2.5 mm; anthers narrowly oblong, 0.8-1.2 mm. Fruits silicles, straight, subglobose to broadly oblong, 3-6 × 2-3.5 mm; valves glabrous; ovules 30-44 per ovary; style 0.8-1.5 mm. Seeds biseriate, yellowish brown, angled, cordiform, 0.8-1.1 mm, strongly colliculate.
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