Small, delicate, much branched, leafy, diffuse herb, 5-25 (-40) cm long, glaucous, glabrous. Leaves (2-) 3-10 cm long, (1-) 2-5 cm broad, long-stalked to subsessile, much dissected, 2-3 -pinnatisect or decompound, with (2-) 3-5 pairs of lateral pinnae and a terminal one; pinnae long-petioluled to subsessile; 1-3 cm long, 0.5-2 (-2.5) cm broad, often ternately lobed with each lobe deeply, finely lobuled into linear ultimate segments (lobules) up to 5 (-8) mm long, 1 mm broad, flat to slightly channelled. Racemes shortly peduncled to subsessile, leaf-opposed, 6-12 (-15)-flowered, 10-20 mm long; bracts as long as or slightly longer than pedicels; linear, submembranous, whitish. Pedicel erect, 1.5-2 (-2.5) mm long, with midian ridge and somewhat expanded margins, slightly broader below the fruit or at its apex. Flowers 5-6 mm long, usually white or pale pinkish. Sepals minute, less than 1 mm long, 0.5 mm broad, sometimes obsolete or inconspicuous, laciniate-dentate, whitish, membranous. Upper petal with very short suborbicular, slightly oblong and obscurely downcurved spur, c. 1.5 mm long (or about ½ of the lamina of upper petal). Fruit c. 2 mm in diam., suborbicular, with usually rounded apex when mature (slightly or minutely apiculate when young), slightly or obscurely keeled (on the margins corresponding to pedicel margins), keel more distinct in slightly young fruits, somewhat rugose when dried and with 2 obscure apical pits, 1-seeded; seed 1-1.5 mm in diam., brownish.