Ipomoea sulina P.P.A.Ferreira & Miotto Kew Bull.

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

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Ipomoea sulina P.P.A.Ferreira & Miotto Kew Bull.


94 . Ipomoea sulina P.P.A.Ferreira & Miotto Kew Bull.   66(2): 290. 2011. (Ferreira and Miotto 2011: 290)


BRAZIL. Rio Grande do Sul, Itati, P.P.A. Ferreira 287 (holotype ICN; isotypes K, SP, LIL).


Perennial twining plant to 4 m, stems woody, grey-tomentose, somewhat glabrescent. Leaves long-petiolate, 7-23 × 6-22 cm, ovate, acute to acuminate, shortly mucronate, cordate, adaxially tomentellous, green, abaxially grey-tomentose; petioles 5-17 cm, tomentellous. Inflorescence of 1-8-flowered axillary cymes; peduncles 3-16 cm, pubescent; bracteoles 1-3 mm, lanceolate, caducous; secondary peduncles up to 4 cm; pedicels 10-30 mm, puberulent; sepals unequal, glabrous, outer 10-13 × 8-9 mm, broadly ovate, obtuse, inner 14-17 × 12 mm, broadly elliptic, rounded or emarginate, margins scarious; corolla 5-8 cm long, funnel-shaped, glabrous, white with purple throat, limb c. 6.5 cm diam. Capsules subglobose, shortly rostrate, glabrous; seeds glabrous with long marginal hairs.


Ferreira and Miotto (2011: 293).


Endemic to southern Brazil in Rio Grande do Sul and Santa Catarina Stares growing on the borders of Araucaria   forest.

BRAZIL. Rio Grande do Sul: Taquara, B. Rambo 44809 (LIL, PACA); ibid., B. Rambo 52115 (LIL, PACA, S). Santa Catarina: Itapiranga, B. Rambo s.n. (PACA) fide Ferreira and Miotto (2011).


Resembles Ipomoea philomega   in the large leaves and in the size and shape of sepals but differs in the hirsute, abaxially grey-tomentose leaves. The strikingly unequal sepals are noteworthy. It was identified as Ipomoea viridis Choisy   by O’Donell but does not seem to fit the protologue.

Its placement here is uncertain.