Convolvulus oxyphyllus subsp. oxycladus Rech.f., Anz. Oesterr . Akad. Iss., Math.-Naturwiss. Kl. 98: 11. 1961. (Rechinger 1961: 11).

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 : 182

172b. Convolvulus oxyphyllus subsp. oxycladus Rech.f., Anz. Oesterr. Akad. Iss., Math.-Naturwiss. Kl. 98: 11. 1961. (Rechinger 1961: 11).

Type.

IRAQ, between Ramadi and Rutbah, Rechinger 9886 (holotype W!; isotype E!).

Distinguishing features.

Lateral branches numerous, short (2-4 cm), rigid, stout, strongly spinescent. Leaves somewhat caducous. Flowers several together, the inflorescence often elongating at maturity, reaching 3 cm in length

Distribution.

Iraq (Rechinger 8190, 9571, Barklay & Abbas-al-Ani 3606, Alizzi & Omar 35230); Iran (Bokhari et al. 14790). Less common than the type variety.

Notes.

The type of this subspecies is immature and almost flowerless. It could easily be interpreted as a form of Convolvulus hamrinensis with apiculate leaves. We have based our interpretation of this subspecies on Guest, Rawi & Rechinger 16058, apparently the same collection as Rechinger 8190).