Ipomoea altoparanaensis O'Donell

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

26. Ipomoea altoparanaensis O'Donell , Arq. Mus. Paranaense 9: 210. 1952. ( O’Donell 1952: 210)

Ipomoea paranaensis Hassl. , nom. nud. Add. Plantae Hasslerianae 18. 1917. (Hassler 1917: 18).

Type.

PARAGUAY. Alto Paraná, K. Fiebrig 5812 (holotype LIL001231, isotype GH, K, SI).

Description.

Trailing perennial; stems stout, densely tomentellous. Leaves petiolate. 5-11 × 2-8 cm, ovate to elliptic, obtuse, mucronate, margin entire to slightly undulate, base broadly cuneate to shallowly cordate, both surfaces sericeous-tomentose, the venation highlighted; petioles 2-5 cm,tomentose. Inflorescence of long-pedunculate 3-5-flowered cymes; peduncles 5-19 cm, tomentose; bracteoles 9-10 × 2.5 mm, tomentose, caducous; secondary and tertiary peduncles 2-4.5 cm; pedicels 6-25 mm, densely tomentose; sepals subequal or interior slightly shorter, 10-14 × 8-11 mm, broadly elliptic to subglobose, obtuse and mucronate, tomentose; corolla 7-9 cm long, funnel-shaped, pink, tomentose, limb 5 cm diam. Capsules and seeds unknown.

Distribution.

Endemic to Paraguay and only known from two collections. It grows in open cerrado.

PARAGUAY. Alto Paraná: Hernandias, Prop. Takurú Pukú de la Itaipú Binacional, M. Vera et al. 2384 (FCQ).

Note.

Very distinct are the silvery sericeous leaves with highlighted veins. It is very like forms of Ipomoea nitida from Corrientes but with the distinct sericeous-tomentose indumentum.