Ipomoea variifolia Meisn. in Martius et al.

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

361. Ipomoea variifolia Meisn. in Martius et al. , Fl. Brasil. 7: 275 (Meisner 1869: 275)

Type.

URUGUAY. Pr. Calderón, F. Sello 688 (B†, photo F, isotype NY00319238).

Description.

Slender twining or perhaps trailing herb; all parts glabrous. Leaves petiolate, 2-3.5 × 0.2-0.8 cm, oblong, auricles 9-12 × 3-5 mm, sagittate, often bilobed, apex acute, margins undulate, base broadly cordate and briefly cuneate onto the petiole, glabrous, abaxially slightly paler; petioles 7-14 mm. Inflorescence of solitary axillary flowers; peduncles 1.5-2.8 cm; bracteoles 2 mm, lanceolate, apiculate; pedicels 8-10 mm; sepals unequal, oblong-lanceolate, acuminate to an apiculate point, outer 10 × 3 mm, inner 15-16 × 3.5 mm; corolla 6.5-7 cm long, funnel-shaped, pink, limb c. 3.5 cm diam., undulate. Capsules and seeds not seen.

Distribution.

Known from two collections from Uruguay and southern Brazil, presumably growing in grassland.

URUGUAY. Type collection.

BRAZIL. Santa Catarina: Mun. Porto União, east of Valôes ( Irineópolis) on road to Canoinhas, L.B. Smith & P. R. Retz 8631 (US).

Note.

A poorly known species apparently related to Ipomoea paranaensis but distinguished by the very distinctive leaves. Superficially it resembles a species of Convolvulus but the corolla is immediately recognizable as an Ipomoea .