Perennial, slender herb with 20-50 cm long stems, ascending to largely prostrate and running with rooting nodes from which more stems may arise. Stems glabrous with few, slender branches. Leaves glabrous or sparsely ciliate, imparipinnate with 1-3 pairs of lateral leaflets (rarely leaflets lacking); basal leaves 2-7 cm long with 1.5-3 mm long petioles, soon disappearing; cauline leaves distantly inserted, rather few, up to 6 cm long with non-auriculate, up to 2 cm long petioles; terminal leaflets trifid, orbicular or reniform, in upper leaves oblanceolate, obtuse, 0.5-1.5(-3) by 0.1-1.2(-2) cm, on 0-8 mm long petiolules; lateral leaflets trifid to oblanceolate, 0.2-0.7 by 0.1-0.5 cm, petiolules c. 1 mm. Racemes terminal, with 3-10 flowers, often very slender; pedicels straight, erect to erecto-patent, 8-15 mm long. Sepals green to reddish white with hyaline margins, oblong, 1.8-2.7 mm long. Petals white, spathulate, obtuse, 3.5-6 mm long, ± ⅓ as broad. Stamens 6, tetradynamous, with subulate filaments; anthers 0.3-0.5 mm long. Ovary cylindrical with indistinct style and flat stigma. Siliqua straight linear, 13-35 by 1.3-1.8 mm; style 0.4-2 by c. 0.5 mm. Seeds red-brown, oblong in outline, 1.4-1.7 by c. 1.1 mm, smooth.
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