Ipomoea abutiloides (Kunth) G. Don

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

394. Ipomoea abutiloides (Kunth) G. Don , Gen. Hist. 4: 273. 1838. (Don 1838: 273)

Convolvulus abutiloides Kunth , Nov. Gen. Sp. 3: 106. 1818 [pub.1819]. (Kunth 1819: 106). Type. ECUADOR. Guayaquil, Bonpland s.n. (holotype P00670760).

Rivea abutiloides (Kunth) Hallier f., Bot. Jahrb. 18: 158. 1893. (Hallier 1893b: 158).

Turbina abutiloides (Kunth) O'Donell , Lilloa 23: 505. 1950. ( O’Donell 1950b: 505).

Ipomoea floribunda Moric. , Pl. Nouv. Amer. 46, t. 31. 1838. (Moricand 1834-47). Type. BRAZIL. Bahia, Blanchet 926 (holotype G00222174).

Ipomoea floribunda var. blanchetii Meisn. in Martius et al. , Fl. Brasil. 7: 262. 1869, nom. illeg., autonymic variety. (Meisner 1969: 262).

Ipomoea abutiloides var. kunthiana Kuntze , Revis. Gen. Pl. 2: 443. 1891, nom. illeg., autonymic variety (Kuntze 1891: 443).

Ipomoea abutiloides var. hartwegiana Kuntze , Revis. Gen. Pl. 2: 444. 1891. (Kuntze 1891: 444). Type. ECUADOR. [Guayas]. Guayaquil, Hartweg s.n. (lectotype K000370540 ex Herb. Bentham from Guayaquil annotated var. hartwegiana , designated here).

Type.

Based on Convolvulus abutiloides Kunth

Description.

Liana climbing high over shrubs to 7 m, stems white-tomentose, especially when young, roots tuberous. Leaves petiolate, 3-10 × 3-11 cm, broadly ovate, base truncate to subcordate, apex retuse, rounded or obtuse, adaxially pubescent, abaxially grey-tomentose; petioles (1-)3-6(-10) cm, pubescent to tomentose. Inflorescence of axillary and terminal cymes, the later compound and often paniculate or racemose in form, sometimes distinctly leafy; peduncles 2-11 cm, tomentose; bracteoles 2-9 mm, linear, tomentose, soon caducous; short (c. 5 mm), secondary and tertiary peduncles often present; pedicels 5-25 mm, tomentose; calyx narrow and ± cylindrical, sepals subequal, 10-14 × 4-7 mm, oblong-obovate, obtuse to rounded, drying brown, glabrous or nearly so, inner c. 2 mm longer than outer, the margins broad and scarious; corolla 5-7 cm long, funnel-shaped, pink, pubescent in bud, glabrescent, limb 4-5 cm, weakly lobed. Capsules glabrous, ovoid, 14-17 × 6-7 mm; seeds reported as usually solitary, 9-10 mm long, minutely tomentellous.

Illustration.

Figure 193 .

Distribution.

Scattered in seasonally dry tropical forest below 1000 m in tropical South America, most common in the Chiquitano dry forest of eastern Bolivia, around Guayaquil and in northern Colombia and Venezuela.

PARAGUAY. Alto Paraguay: Gabino Mendoza, F. Mereles & R. Degen 5946 (CTES, FCQ); trayecto a Cerro Chovoreca, F. Mereles 6608 (CTES, FCQ).

BRAZIL. Bahia: Morro do Chapéu, A. Oliveira et al. 144 (HUEFS, K); Ilhéus. J. Hage & H.S. Brito 1037 (K, CEPEC); Serra de Jatobá, R.M. Harley et al. 22022 (CEPEC, K). Goiás: H.S. Irwin et al. 15745 (MO). Mato Grosso do Sul: Corumbá, Dorrien Smith 32 (K); Rio Verde, G. Hatschbach 33952 (MBM, MO). Minas Gerais: W.R. Anderson et al. 37194 (NY).

BOLIVIA. Chuquisaca: Siles, M. Serrano 1506 (HSB). Santa Cruz: Chiquitos, Limoncito, J.R.I. Wood & M. Mendoza 27315 (K, LB, USZ); Cordillera, Santa Cruz-Abapó, M. Nee 48677 (K, MO, NY, USZ); Ibañez, M. Nee 48723 (NY, USZ). Ñuflo de Chávez, W of Concepción, J.R.I. Wood & D. Soto 27516 (K, LPB, USZ); Velasco, San Juancito, J.R.I. Wood et al. 26136 (K, LPB, USZ, UB).

PERU. Amazonas: Luya, Camporedondo, J. Campos et al. 3695 (MO, OXF).

ECUADOR. El Oro: G. Harling & L. Andersson 14313 (MO). Guayas: G. Harling 3009 (S); E. Asplund 15212 (K, S); R. Spruce 6494 (BM, K); C.H. & P.M. Dodson 11355 (MO). Loja: Macará, F. Vivar 1247 (LOJA). Manabí: Jipijapa, M. Montesdeoca et al. 641 (QAP).

COLOMBIA. Bolívar: E.P. Killip & A.C. Smith 14244 (BM), 14447 (GH, NY, S). Cesar: A. Gentry et al. 60692 (MO). Sucre: Coloso, A. Gentry & H. Cuadros 68163 (MO).

VENEZUELA. Maracay & Caracas, P. Vogl & K. Suessenguth 98 (BM, BR). Aragua: Tovar, A. Fendler 931(K, MO); El Consejo-La Victoria, Ll. Williams & A.H.G. Alston 325 (BM, S). Barinas: Río Curbatí: L. Bernardi 1700 (K). Falcón: J. A. Steyermark 94702 (MO). Portuguesa: Guanare, G. Aymard 4287 (MO).

PANAMA. Coclé, M.D. Correya 405 (MO); Los Santos, W.H. Lewis et al. 2949 (MO)

Note.

This species is distinguished from Ipomoea sericosepala by the glabrous sepals and we are unaware of other distinguishing features. The following collections with very sparsely pubescent sepals were made where the range of the two species overlaps. They merit further investigation and may be hybrids:

BOLIVIA. Santa Cruz: Cordillera, Abapo, c. 35 km hacia Camiri, M. Mendoza et al. 2725 (USZ); Camiri, M. Mendoza et al. 2736 (USZ); Río Grande Bridge S of Abapó, J.R.I. Wood et al. 28017 (LPB, K, OXF).

Figures

Figure 193. Ipomoea abutiloides. A habit B adaxial leaf surface C abaxial leaf surface D outer sepal E inner sepal F bud G corolla opened up to show stamens. Drawn by Eliana Calzadilla. A from Wood et al. 26090; B-G from Wood et al. 26136.