Ipomoea decipiens Dammer

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

62. Ipomoea decipiens Dammer , Bot. Jahrb. Syst. 23, beiheft 57: 40. 1897. (Dammer 1897: 40)

Type.

BRAZIL. Minas Gerais, Congonhas do Campo, A.F.M. Glaziou 13100 (holotype B†, photo F, isotypes G, K, P, R).

Description.

Twining perennial herb of unknown height, stems thinly pubescent to glabrous. Leaves petiolate, 4-13 × 4-10.5 cm, broadly ovate, cordate, acute or subacute and apiculate, adaxially glabrous, abaxially paler, glabrous, thinly pubescent or puberulent on the veins only; petioles 2-9 cm, glabrous below, puberulent upwards. Inflorescence of pedunculate, many-flowered, lax, compound cymes; peduncles 2.5-9 cm, glabrous; bracteoles caducous, not seen; secondary peduncles 0.5-2.5 cm, spreading at right angles to the peduncle; tertiary peduncles 0.5-1.5 cm; pedicels 7-13 mm long, pubecent; sepals slightly unequal, outer 6-7 × 3-4 mm, ovate, obtuse to rounded, thinly pubescent, inner 7-11 × 6-7 mm, obovate, rounded, nearly completely scarious, glabrous; corolla 5.5-6.5 cm long, pink, pubescent, funnel-shaped, limb 4-4.5 cm diam., unlobed, midpetaline bands ending in a point. Capsules and seeds unknown.

Distribution.

A rare species of Caatinga in the the Brazilian planalto.

BRAZIL. Minas Gerais: type collection. Bahia: Rodovia BR-116, 34 km N de Poções en trecho a Jequié, S.A. Mori et al. 9540 (CEPEC, NY).

Note.

Obviously part of the Ipomoea megapotamica complex differing principally in the obtuse outer sepals and rounded scarious inner sepals. The subtruncate base of the calyx and sparse indumentum should also be noted.