Convolvulus koieanus Bornm., Dan. Sci. Invest. Iran 4: 37. 1945. ( Koeie 1945: 37).

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 : 150

129. Convolvulus koieanus Bornm., Dan. Sci. Invest. Iran 4: 37. 1945. ( Koeie 1945: 37). Figure 16, t. 17-23

Type.

IRAN, Luristan, Chah-Bazan, Köie 1301 (lectotype C, designated by Sa’ad 1967: 97; isolectotype B).

Description.

Undershrub with woody taproot, from which arise many rigid branched stems to c 40 cm, stems minutely adpressed pilose, the hairs resembling cystoliths. Leaves sessile, 10-30 × 0.5 mm, filiform, acute, adpressed pubescent. Flowers 1-3 in long-pedunculate, axillary and terminal dichasial cymes; peduncles up to 20 cm long, straight, slender and not very rigid; bracteoles 1-2 × 0.25 mm, filiform; sepals 5-6 × 4 mm, obovate-elliptic, apiculate, glabrous; corolla1.4-1.5, colour unknown, midpetaline bands pubescent; ovary comose; style divided 2 mm above base; stigmas 3 mm. Capsule and seeds not known. [ Sa’ad 1967: 97, Nowroozi 2002: 53 (plate), 102 (map)]

Distribution.

Iran ( Köie 1302, 684).

Notes.

Appears to be close to Convolvulus leptocladus but is distinguished by its filiform leaves, pubescent ovary and longer, oblong sepals.