Ipomoea subrevoluta Choisy Prodr.

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

378. Ipomoea subrevoluta Choisy Prodr. [A.P. de Candolle] 9: 386. 1845. (Choisy 1845: 386)

Ipomoea dactylophylla Griseb , Cat. Pl. Cub. 203. 1866. (Grisebach 1866: 203). Type. CUBA. C. Wright 3093 [1650] (holotype GOET, isotypes BM, GH, HAC, K, MO, P, YU).

Ipomoea subrevoluta var. induta Hassl. , Repert. Spec. Nov. Regni Veg. 9: 159. 1911. (Hassler 1911: 159). Type. PARAGUAY. [ Concepción], zwischen Río Apa and Río Aquidaban, K. Fiebrig 4975 (lectotype G00175185, designated here; isolectotypes BM, G, GH, K, L, P).

Ipomoea subrevoluta forma acutiloba Hassl. [as var. genuina Hassl. forma acutiloba], Repert. Spec. Nov. Regni Veg. 9: 159. 1911. (Hassler 1911: 159). Type. PARAGUAY. Chaco, K. Fiebrig 1288 (lectotype G00175186, designated here; isolectotypes G, K, M).

Type.

GUYANA. C.S. Parker s.n. in Herb. Lindley (holotype CGE14419!, isotypes K!).

Description.

Twining perennial herb, completely glabrous in all parts. Leaves petiolate, divided into 5(-7) separate sessile leaflets, leaflets 2. 5-6 × 0.1-0.4(-0.7) cm, linear to narrowly oblong, apiculate, acuminate at base; petioles 0.5-5 cm. Inflorescence of 1(-3)-flowered, axillary, pedunculate cymes; peduncles slender, 0.8 -1.8 cm, often flexuose; bracteoles 1.5 mm, deltoid, caducous; pedicels 1-1.5 cm, stouter than peduncles; sepals subequal, 5-6 × 2-3 mm, ovate, shortly apiculate, pale green; corolla 4-6 cm long, funnel-shaped, pink, glabrous, limb c. 4 cm diam., unlobed. Capsules 12-14 cm long, ovoid, glabrous; seeds 5-6 mm, dark brown, nearly glabrous.

Illustration.

O’Donell (1959b: 246); Figure 58J-L .

Distribution.

Widely distributed in wetlands in tropical South America from Colombia and the Guianas south to northern Argentina but usually in small quantity in scattered populations; also present on the Isla de Juventud [Pinos], Cuba, perhaps an ancient introduction by birds. Characteristic of small streams with moving water in open areas below 500 m.

ARGENTINA. Corrientes: Dept. Mercedes, S.G. Tressens et al. 3683 (CTES, K). Misiones: B. Berteroni 5831 (LIL).

PARAGUAY. Concepción. Type of Ipomoea subrevoluta var. induta .

BRAZIL. Amapá: Río Urucaua, J.M. Peres & L. Westra 48887 (NY). Bahia: Oeste, Formosa do Rio Preto, A.B. Xavier & M.L. Guedes 289 (ALCB). Mato Grosso: G.T. Prance 26063 (NY); Poconé, A. Macedo 697 (NY). Mato Grosso do Sul: Corumbá, P. da Silva & M. Moreira 20 (CPAP); Rio Paraguai, Pantanal de Cáceres, V.J. Pott 2045 (CPAP, CTES). Paraná: Río Paraná, J.C. Lindeman & de Haas 4391 (NY). Pernambuco: Rio São Francisco, Cabrobó, M.V. Meiado 847 (HVASF). Rio Grande do Norte: Chapada do Apodi, E.C. Tomaz & A.S. Pontes 37 (UFRN). Tocantins: Lagoa do Raimuno, E.R. Santos 1956 (HUTU). Records from Amazonian Brazil in Flora do Brasil 2020 under construction may or may not be correct.

FRENCH GUIANA. Cremers 5229 (P); J.J. de Granville 9146 (P).

SURINAM. W.R. Hostman 538 (BM).

GUYANA. Moreru Lake, R.J.A. Goodland 1064 (MO, NY).

BOLIVIA. Beni: Ballivián, 40 km N. of Santa Rosa, S.G. Beck 20707 (LPB); Cercado, Laguna Suárez, N. Ritter & M. Ritter 3367 (BOLV, LPB); Marbán, Laguna Bolivia, López al. 83 (LPB); Moxos, P.N. Isiboro Sécure, E. Gutiérrez & G. Navarro 1641 (USZ). Pando: Manuripi, Conquista, E. de la Sota 993 (LIL). Santa Cruz: Ñuflo de Chávez, Concepción, T.J. Killeen 2403 (FTG, LPB, NY, F, USZ); Perseverancia, I. G. Vargas 589 (USZ); Ángel Sandoval, A.N.M.I. San Matías, A. M. Carrión & E. Rivera 790 (USZ); Velasco, El Refugio, R. Guillén & S. Coria 1585 (ARIZ, MO, USZ); Santa Rosa de la Roca, J.R.I. Wood et al. 27813 (K.LPB, USZ).

PERU. Loreto: Reserva Nac. Pacaya-Samiria, C. del Carpio 2276 (MO, USM).

COLOMBIA. Antioquia: E. Rentería 1930 (COL). Chocó: J. León 645(COL). Córdoba: Montería: B. Anderson 1929 (COL, K); Magdalena: M.T. Dawe 460 (K). Córdoba: Montería: B. Anderson 1929 (COL, K).

VENEZUELA. Delta Amacuro: Antonio Díaz, J. Steyermark et al. 114812 (K, MO).

CUBA. Isla de Pinos, E.L. Ekman 12283 (S).

TRINIDAD. Fide Hill and Sandwith (1953).

Note.

Usually easily recognised by the very short sepals combined with the 5-foliolate leaves and relatively large glabrous flower.

••• Clade D (species 379-388) comprises a small clade of entirely American species. All species are herbaceous but show no other obvious common character.

Figures

Figure 58. Ipomoea rosea. A habit with buds B habit with corolla C outer sepal, abaxial view (left), lateral view (right) D inner sepal E corolla opened out to show stamens F ovary and style G calyx and capsule H seed J seed, lateral view. Drawn by Rosemary Wise A from Figueiredo et al. 588; B from Pirani et al. 51360; C-F from Harley et al. 18947; G-J from Harley et al. 21217.