Ipomoea invicta 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

251. Ipomoea invicta House , Ann. New York Acad. Sci. 18 (6): 193. 1908. (House 1908b: 193)

Type.

MEXICO. Jalisco, San Sebastián, E.W. Nelson 4087 (holotype US00111404, isotypes K, GH).

Description.

Liana climbing to 8 m, stems brown, strigose. Leaves petiolate, 6-14 × 4.5-11 cm, ovate, cordate, apex acuminate, mucronate, adaxially glabrous or nearly so, abaxially paler, thinly pubescent; petioles 4-6.5 cm, subglabrous to pubescent. Inflorescence of long-pedunculate dense, few-flowered, axillary cymes; peduncles 2.5-17 cm, subglabrous to pubescent; bracteoles 23-37 × 12-18 mm, ovate-elliptic, acuminate, cuneate at base, whitish-green with prominent veins, persistent; secondary peduncles 1.8 cm, stout; pedicels 5-10 mm, widened upwards; sepals unequal, outer 20-22 × 8-10 mm, narrowly elliptic, acute and mucronate, veins prominent, glabrous, inner sepals 13-20 × 4-5 mm, oblong-elliptic, noticeably smaller; corolla 6-7 cm long, glabrous, funnel-shaped, widened abruptly above a broad whitish basal tube, limb 7 cm diam., somewhat lobed, deep pinkish-purple; stigma 3-lobed. Capsules subglobose, 10 mm wide, enclosed by persistent sepals; seeds not seen.

Distribution.

A forest species endemic to central Mexico at 1100-1250 m.

MEXICO. Guerrero: NE del valle de Zaragoza, E.M. Martínez & J.C. Soto 3715 (MO); Montes de Oca, Vallecitos, G.B. Hinton 11766 (K). Jalisco: 22 km S of Talpa de Allende, R. McVaugh 23331 (MICH), foothills of Sierra de Manantlán, R. McVaugh 23246 (MICH).