Convolvulus hystrix Vahl
Subshrub, much branched with entangled spinescent branchlets to 1 (- 2) m, vegetative parts glabrous, sericeous, pubescent or densely pilose.
Leaves subsessile, 4-10 (-15) × 1-3 (-5) mm, narrowly oblong, elliptic or ovate, acute, base broadly cuneate, truncate to auriculate, margin entire.
Flowers 1-6 in subsessile, elliptic to suborbicular axillary clusters; peduncles absent; bracteoles 3-7 × 2-5 mm, narrowly elliptic to obovate; pedicels 0-1 mm; outer sepals 7-9 × 6-8 mm, broadly ovate or elliptic, acuminate, wider than inner ones; corolla 0.8-1.4 cm long, pale to dark violet, weakly lobed, midpetaline bands pubescent, brown; ovary glabrous; style glabrous, divided 6-7 mm above base, arms unequal c. 1-1.5 mm, stigmas short and narrowly elliptic, c. 1 mm.
Capsule glabrous; seeds glabrous.
native range is Egypt to NE. Tropical Africa , Syria to Arabian Peninsula.