Convolvulus crenatifolius Ruiz & Pav., Fl. Peruv. 2: 10. 1799. (Ruiz and Pavon 1799: 10, tab. 118).

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 : 92

52. Convolvulus crenatifolius Ruiz & Pav., Fl. Peruv. 2: 10. 1799. (Ruiz and Pavon 1799: 10, tab. 118).

Type.

PERU, Huanuco Ruiz & Pavón s.n. s.n. (lectotype MA-814634, designated here; isolectotypes MA 814632, 814633).

Description.

Pubescent to densely hirsute herb; stems twining up to 3 m high. Leaves petiolate, 3-8 × 1-4 cm, ovate-deltoid, strongly auriculate, usually large, apex usually obtuse and mucronate, margin undulate to sinuate, base broadly cordate to hastate with midrib area cuneate onto petiole; petioles 7-15 mm. Flowers (1-) 3-7 in compact axillary, pedunculate umbellate cymes; peduncles 1.5-12 cm; bracteoles 2-5 mm, narrowly lanceolate; pedicels 2-12 mm, apparently accrescent after anthesis; outer sepals 6-6.5 × 3.5-5 cm, elliptic, obtuse or acute; corolla 1.1-1.5 cm long, white to pink, deeply lobed, midpetaline bands brownish, pilose, terminating in a mucro; ovary glabrous; style divided c. 7 mm above base; stigmas 3 mm, more or less included. Capsule glabrous; seeds smooth. [ O’Donell 1959: 271 p. p., Carranza (2008: 4ff.)]

Notes.

We recognise two subspecies, which are distinct through most of their range, but intergrade in parts of northern Argentina (Morel 5885 from Formosa, Schwarz 6391 from Misiones and Risso 30 from Santiago de Estero are examples) and in the São Paulo area of Brazil (Hoehne 265), mostly at altitudes of around 1000 m.