Convolvulus persicus L., Sp. Pl. 1: 158. 1753. (Linnaeus 1753: 158).

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 : 106-107

72. Convolvulus persicus L., Sp. Pl. 1: 158. 1753. (Linnaeus 1753: 158). Figure 10, t. 22-30

Type.

TURKEY, Constantinople, G. V. Aznavour (neotype BM!, designated by Staples in Staples and Jarvis 2006: 1021); isoneotypes B, E!, P!).

Description.

Perennial branched undershrub with woody rootstock and lower branches, the whole plant shortly tomentose; stems very stout, 3-5 mm thick. Leaves petiolate, coriaceous, 2-5 × 1-3.5 cm, elliptic, oblong-elliptic or obovate, apex obtuse to rounded, margin entire, base broadly cuneate to rounded, slightly asymmetric; petioles 0-6 cm. Flowers solitary, axillary, pedunculate, usually arising from the middle part of the stem; peduncles 0.8-3.3 cm; bracteoles 3-5 × 1-3 mm, ovate to oblong-elliptic, acute; pedicels 5-7 mm; sepals 12-15 × 7-9 mm, ovate, obtuse or acute; corolla 3-4.5 cm, white, unlobed, undulate, midpetaline bands pilose; filaments glandular below; ovary very narrow, thinly pilose at apex; style divided c. 18 mm above base; stigmas 2 mm, narrowly elliptic. Capsule glabrous, seeds tuberculate. [ Sa’ad 1967: 163; Nowrooze 2002: 103 (map); Grigoriev 1953: 11 (plate)]

Distribution.

Coasts of the Black Sea: Georgia (Cosson 8 in Hohenacker), Turkey (Olivier & Brugière s.n., Uslu 2141), Bulgaria (Bosseva et al. 88), Romania (Grintescu 1094b) and Caspian Sea: Russia [Daghestan] (Becker 1876), Azerbaijan (Lewandowsky 519, Kerimov 32), Iran (Aucher-Eloy 4940), Turkmenistan (Dubiansky s.n. [14/7/1932]). Coastal sand dunes.

Notes.

A very distinct, apparently isolated species.