Perennial stoloniferous herb. Stems trailing, glabrous, to several m long. Lvs glabrous, all similar, but becoming smaller near infl., pinnate, petiolate, 2-10-(25) × 1-5 cm; basal auricles small; leaflets rounded, ovate; margins entire or sinuate. Pedicels glabrous, slender, erecto-patent, spreading to deflexed at fruiting, (5)-10-15-(18) mm long (very rarely to 30 mm). Sepals 1.5-2.5 × 0.7-1.5 mm. Petals white, (3)-4-6 × (1)-1.5-2.5 mm. Silique glabrous, narrow-oblong, curved, (8)-12-15-(18) × 2-2.5 mm; valves with distinct midrib, at least below; style c. 1 mm long. Seeds distinctly in 2 rows per locule, brown, c. 1 mm long, coarsely reticulate with 20-50 polygonal depressions per face.