Convolvulus pungens Karelin & Kirilov.

Subshrubs or cushion shrubs, 10-20(-30) cm tall; branches densely straggling, divaricate, densely silvery sericeous; twigs with short hard spines. Leaves subsessile, lanceolate, oblanceolate, or linear-lanceolate, densely silvery sericeous, base attenuate, apex acute to obtuse. Pedicel 1-2 mm. Flowers solitary, axillary, on short branches. Sepals unequal, 0.8-1.2 cm, sparsely pilose or glabrous abaxially, or ciliate distally; outer 2 broadly ovate-circular, base cordate; inner 3 narrower. Corolla rose, funnelform, 1.7-2.2 cm, midpetaline bands densely hirsute. Stamens included, slightly unequal; filaments glabrous; anthers sagittate. Disc ringlike. Ovary conical, long pubescent. Stigmas linear. Capsule ellipsoid-ovoid, ca. 6 mm, apex sparsely pubescent. Fl. May-Jun.

Sandy or pebbly deserts, stony dry slopes. Gansu, Nei Mongol, Ningxia, Shanxi, Xinjiang [Kazakhstan, Kyrgyzstan, Mongolia, Russia, Tajikistan, ?Uzbekistan].