Ipomoea ignava House

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

303. Ipomoea ignava House , Ann. New York. Acad. Sci. 18: 214. 1908. (House 1908b: 214)

Ipomoea maltratana Standl., Publ. Field Mus. Nat. Hist. , Bot. Ser. 22: 46. 1940. (Standley 1940b: 46). Type. MEXICO. Veracruz, Maltrata, E. Matuda S106 (holotype F0054852, isotype F).

Type.

MEXICO. Oaxaca, Las Sedas a La Carbonera, C. Conzatti & G. Gonzáles 261 (holotype GH00054504, isotype NY).

Description.

A slender trailing or twining herb, stems glabrous. Leaves petiolate, 1-5.5 × 1-6 cm, ovate, acuminate, mucronulate, base hastate, auricles rounded or angled, margin dentate with large teeth, strigose on both surfaces or glabrous adaxially; petioles 0.5-4 cm. Inflorescence of solitary or paired flowers from the leaf axils; peduncles 1.2-4.8 cm, erect; bracteoles 1-2 mm, lanceolate; pedicels 4-13 mm, thicker than peduncles, becoming reflexed; sepals unequal, glabrous, strongly muricate, outer 3-4 × 3-4 mm, ovate, acute or obtuse, often mucronate, inner 5-8 × 3 mm, oblong-lanceolate, mucronate; corolla 4-5.5 cm long, funnel-shaped, pink or purplish, glabrous, limb 4-5 cm diam. Capsules 8 × 6 mm, conical, glabrous; seeds 5 × 4 mm, puberulent.

Illustration.

McDonald (1987c: 86).

Distribution.

A rare Mexican endemic of dry deciduous forest at altitudes of 2000-2400 m.

MEXICO. Est. México & Dist. Fed.: Temascaltepec, Nanchititla, G.B. Hinton 8563 (GBH, MO, n.v.). Guerrero: Chilpancingo, H. Kruse 2097 (IEB, MEXU). Oaxaca: La Carbonera, C. Conzatti 804 (GH); Santiago Naranjas, S. Zamudio et al. 12817 (IEB); Tlaxiaco, R. Torres et al. 7145 (MEXU). Querétaro: Cadereyta, S. & E. Zamudio 10296 (IEB). Veracruz: type of Ipomoea maltratana .

Note.

Differs from Ipomoea schaffneri in the shorter sepals and the clearly funnel-shaped corolla.