Convolvulus hermanniae L'Her ., Stirp. Nov. 67. 1788, t 33. 1788. ( L'Heritier 1788: 67).

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 : 89

49. Convolvulus hermanniae L'Her., Stirp. Nov. 67. 1788, t 33. 1788. ( L'Heritier 1788: 67).

Type.

PERU, Huara, Dombey (lectotype P-00608800!, sheet labelled "Perou Dombey", designated here; isolectotypes P!, BM000953290!).

Description.

Trailing or (less commonly) twining herb from a thickened woody rootstock c. 1 cm thick, all vegetative parts grey-tomentose. Stems up to 1 m long, apparently more slender in twining plants, numerous. Leaves petiolate, 2-6.5 × 0.5-3 cm, ovate to ovate-deltoid, the auricles not well-developed, apex acute to obtuse, margin undulate to irregularly dentate, base cordate; petioles 5-12 (-22) mm. Flowers 1-2 (-3), axillary, pedunculate; peduncles 1-3 (-6)cm, often shorter than the leaves; bracteoles 2-4 mm, linear-lanceolate; pedicels 5-12 mm; outer sepals 7-10 × 4-6 mm, (narrowly) elliptic, usually acute; corolla 1.4-1.8 cm long, white, shallowly lobed, midpetaline bands extended into mucros, tomentose; ovary conical, 1.5-2 mm, glabrous or apically pilose, style divided 5-7 mm above base, glabrous except immediately above ovary, stigmas 2.5-3 mm. Capsule glabrous or apically pilose; seeds smooth.

We recognise two subspecies based on ovary and capsule indumentum: