Ipomoea nitida Griseb.

Wood, John R. I., Munoz-Rodriguez, Pablo, Williams, Bethany R. M. & Scotland, Robert W., 2020, A foundation monograph of Ipomoea (Convolvulaceae) in the New World, PhytoKeys 143, pp. 1-823 : 1

24. Ipomoea nitida Griseb. , Symb. Fl. Argent. 264. 1879. (Grisebach 1879: 264)

Ipomoea malveoides var. nitida (Griseb.) Hallier f., Bull. Herb. Boiss. 7 (5), append. 1: 52. 1899. (Hallier 1899c: 52).

Type.

ARGENTINA. Entre Ríos, weiden bei Concordia, 15 Feb. 1876, Lorentz 719 (holotype GOET002520, photo of isotype from B† at F).

Description.

Trailing perennial; stems 1-3 m long, glabrous to pubescent. Leaves petiolate, 4.5-18 × 1.5-17 cm, oblong-lanceolate to elliptic-rhomboid, base truncate to cuneate, apex subacute to rounded, mucronate, both surfaces green, subglabrous, adpressed pubescent to sericeous; petioles 1.3-4.5 cm, glabrous to pubescent. Inflorescence of pedunculate axillary, usually compounded cymes with up to 8 flowers; primary peduncles 1-11 cm, glabrous or pubescent; secondary peduncles 2.5-6.7 cm; tertiary peduncles sometimes present; bracteoles lanceolate, 1.5-2 mm, nearly glabrous to sericeous, caducous; pedicels 8-23 mm, glabrous or pubescent; sepals subequal, 8-10 × 5-6 mm, outer sepals ovate, acute, pubescent, inner sepals oblong-elliptic, obtuse, more densely pubescent with nearly glabrous margins; corolla 4.5-6.5 cm long, pink, funnel-shaped, pubescent; limb 4-5 cm diam.,undulate. Capsules 10-13 × 9 mm, ovoid, glabrous; seeds 6-7 × 3.5 mm, black, obscurely pubescent.

Variation.

This species is divisable into two relatively well-marked geographical subspecies based principally on leaf shape and inflorescence development.