Convolvulus ensifolius P.P.A.Ferreira & Simao-Bianchini , Phytotaxa 135: 29. 2013. (Ferreira et al. 2013: 29).

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 : 95

54. Convolvulus ensifolius P.P.A.Ferreira & Simao-Bianchini, Phytotaxa 135: 29. 2013. (Ferreira et al. 2013: 29).

Type.

BRAZIL, Rio Grande do Sul, P. P.A. Ferreira 300 (holotype ICN; isotypes K!, SP).

Description.

Prostrate perennial with woody base, the stems winged, twining at the apices. Leaves shortly petiolate, 2-6 × 0.2-0.4 cm, linear-oblong, base sagittate, apex acute, glabrous; petiole 2-6 mm. Flowers solitary; peduncles 25-60 mm, shortly winged; bracteoles 3-5 nn, lanceolate, deciduous; pedicels 8-12 mm; outer sepals 6-8 × 3-4 mm, obovate, truncate, mucronulate, glabrous or canescent, the margins ciliolate; inner sepals similar but with scarious margins; corolla 1.8-2.2 cm long, white, glabrous, midpetaline bands sericeous; ovary glabrous, subglobose; style divided 6-9 mm above base; stigmas 3-4 mm. Capsule glabrous, apiculate; seeds black, glabrous.

Distribution.

Brazil (Rio Grande do Sul, Paraná).

Notes.

Resembling Convolvulus lilloi and Convolvulus hasslerianus in the solitary flowers and shortly petiolate leaves but near glabrous, the leaves linear-oblong and the sepals much shorter.