Perennating robust herb, 20-70 cm tall, thick and woody below, glabrous, somewhat glaucous, erect, branched. Lower leaves obovate, 4-11 cm long, 2-7 cm broad, usually entire, obtuse or rounded at the apex, narrowed into a short, petiole-like base; upper leaves ± ovate, 1.5-6 (-8) cm long, 1-6 cm broad, sessile, cordate, amplexicaul, entire with usually rounded apex; all leaves fleshy, glabrous, glaucous, sometimes slightly papillose-looking. Racemes few to 30-flowered, lax, up to 20 cm long in fruit. Flowers about 1 cm across, pink or violet; pedicel 3-5 mm long, hardly increasing in length in fruit, slightly thickened, ascending. Sepals 6-8 mm long, 2 mm broad. Petals 12-15 mm long, 4-5 mm broad, obovate-oblong, long clawed, apex subtruncate. Stamens about 7:9 mm long; anthers about 2 mm long. Siliquae linear, 45-80 mm long, 1.5-2 mm broad, compressed-terete, glabrous; valves with a prominent mid-rib; beak 1.5-3 mm long, conical with a bilobed (lobes decurrent) stigma; septum membranous with biseriate depressions formed by the seeds; seeds numerous, biseriate, very small, less than 1 mm long, ellipsoid, brown.

Fl. Per.: July-October.

Type: Sinai. Aucher Eloy 167 (G,K).

Distribution: Egypt, Sinai, Arabia, Iran and Pakistan.

Distinguished from M. arvensis (L.) DC. by its robust habit, large leaves and pods having very short beak.

It is perhaps browzed by camel and goats.