Convolvulus cataonicus Boiss. & Hausskn., Pl. Orient. Nov. (dec. prim.) 1: 5. 1875. (Boissier 1875a: 5).

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 : 173

163. Convolvulus cataonicus Boiss. & Hausskn., Pl. Orient. Nov. (dec. prim.) 1: 5. 1875. (Boissier 1875a: 5). Figure 21, t. 18-25

Convolvulus huber-morathii P.H.Davis, Notes Roy. Bot. Gard. Edinburgh 24: 24. 1962. ( Davis 1962: 24). Type. TURKEY, Stainton & Henderson 5471 (holotype E00285414!; isotype K!).

Convolvulus abdallahi Sa’ad, Meded. Bot. Mus. Herb. Rijks Univ. Utrecht 281: 114. 1967. ( Sa’ad 1967: 114). Type. TURKEY, Kastamonu, Davis 21640 (holotype K!; isotype E!).

Type.

TURKEY, Beryt Dagh, Haussknecht s.n. (holotype G; isotype W!).

Description.

Woody based perennial, branched at base with a thick, woody tap root, somewhat cushion-forming with short spreading woody branches and ascending herbaceous stems to c. 20 cm, adpressed pilose with some spreading hairs. Leaves mostly basal, sometimes folded, sessile, 1-6 × 0.2-0.3 cm, linear or linear-oblanceolate, acute, entire with long tapering base; lower surface and margins pilose, upper surface glabrous except at margins. Flowers in few-flowered terminal heads, occasionally also with solitary sessile or very shortly pedunculate heads from the axils of the uppermost leaves; bracts 10-20 × 1-2 cm, linear, acute; peduncles 0-2 cm; bracteoles 3-6 mm, linear; pedicels 0-1 mm; sepals 6-10 × 2 mm, ovate, the scarious base abruptly narrowed to a green caudate apex 2-3 mm long, shortly pilose; inner sepals with broad, scarious, glabrous margins; corolla 1.5-2 cm long, white, unlobed, midpetaline bands pilose, terminating in a tooth; ovary pubescent; style divided c. 4 mm above base, stigmas 3 mm. Capsule pilose; seeds not seen. [ Sa’ad 1967: 139; Parris 1978: 211]

Distribution.

A rare species of central and eastern Turkey (Buchner 16/8/1982).

Notes.

Similar to Convolvulus calvertii but distinguished by the calyx bicoloured, the apical part green.