Convolvulus pseudocantabrica Schrenk, Enum. Pl. Nov. [F.E.L. Fischer & C.A. Meyer] 1: 21. 1841. (Fischer and Meyer 1841: 21).

Wood, John R. I., Williams, Bethany R. M., Mitchell, Thomas C., Carine, Mark A., Harris, David J. & Scotland, Robert W., 2015, A foundation monograph of Convolvulus L. (Convolvulaceae), PhytoKeys 51, pp. 1-282 : 151

131. Convolvulus pseudocantabrica Schrenk, Enum. Pl. Nov. [F.E.L. Fischer & C.A. Meyer] 1: 21. 1841. (Fischer and Meyer 1841: 21).

Type.

KAZAKHSTAN, Koksu River, Schrenk s.n. (lectotype LE!, sheet with single rootstock, designated here).

Description.

Perennial undershrub with tough woody rootstock from which arise several erect, woody, branched fastigiate stems to 50 cm; stems adpressed pubescent. Basal leaves sessile, 2-4 × 0.2-0.5 cm. oblong, acute, entire, attenuate to somewhat abruptly narrowed at the base, glabrous to thinly adpressed pubescent on the veins and lower surface; stem leaves similar but linear, diminishing in size upwards. Inflorescence terminal and panicle-like, formed of terminal dichasial cymes and solitary flowers at the apex of lateral branches; bracteoles 2-5 mm, filiform; pedicels 1-10 mm; sepals 5-7 × 2 mm, oblong to obovate, acute to mucronate, glabrous, the inner sepals larger, c. 3 mm wide, obovate, with a clearly demarcated wing-like margin; corolla 1.8-2.2 cm, pink, undulate, midpetaline bands pilose, terminating in a broad tooth; ovary glabrous, style glabrous, divided c. 4 mm above base, stigmas 3 mm. Capsule glabrous, 1-seeded, seeds pubescent (fide Sa’ad). Sa’ad 1967: 100; Austin and Ghazanfar 1979: 14.

Notes.

Two well-defined subspecies can be recognised: