Convolvulus schirazianus Boiss., Diagn. Pl. Orient. 11: 82. 1849. (Boissier 1849: 82).

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 : 162

148. Convolvulus schirazianus Boiss., Diagn. Pl. Orient. 11: 82. 1849. (Boissier 1849: 82). Figure 20, t. 15-22

Convolvulus chamaerhacos Bornm., Mitth. Thüring. Bot. Vereins, n.f., 37: 53. 1927. ( Bornmüller 1927). Type. IRAN, Mount Kuh-i-Besri, Sultanabad, Strauss s.n. (holotype B).

Type.

IRAN, Kotschy 379 (holotype G; isotypes BM, C, E, GOET, FI, OXF, P, W).

Description.

Woody based perennial with deep taproot, usually branched at base with several ascending stems in a loose tuft to c. 35 cm in height, stems and all vegetative parts obscurely to densely appressed pubescent. Leaves sessile, 3 × 0.2-0.3 cm, linear, acute, entire, attenuate at base. Inflorescence of terminal heads, occasionally with a few flowers in the uppermost leaf axil; bracts 6-9 × 1.5-2 mm, lanceolate; peduncles and pedicels absent; bracteoles 7 × 1 mm, linear, acute, often overtopping the head; outer sepals 8-9 × 2.5 mm, ovate, abruptly narrowed around the middle with a long acuminate apex, villous; inner sepals similar but with glabrous margins; corolla 1.7-2.5 cm long, cream, midpetaline bands pilose; ovary pilose; style pilose, divided 7 mm above the base, stigmas 4 mm. Capsule pilose. [ Sa’ad 1967: 119]

Distribution.

Endemic to Iran (Schmidt 5474, Grant 17704, Stapf 375).

Notes.

Distinguished from other species with a capitate inflorescence by its narrow, linear leaves and adpressed stem indumentum. The sepals are shorter than in Convolvulus commutatus .