Ipomoea intrapilosa Rose

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

120. Ipomoea intrapilosa Rose , Gard. & Forest 7: 367. 1894. (Rose 1894: 367)

Ipomoea murucoides var. glabrata S. Watson , Proc. Amer. Acad. Arts 22: 440. 1887. Type, MEXICO. Jalisco, E. Palmer 703 (holotype GH00054521, isotypes BM, K, MEXU, US)

Type.

MEXICO. Jalisco, E. Palmer 705 (US00111405, lectotype designated by McPherson 1981: 533, isolectotypes BM, GH, K, MEXU).

Description.

A small tree to 10 m, stems glabrous. Leaves petiolate, 7-14 × 3-5.5 cm, broadly lanceolate, acuminate, base truncate to shallowly cordate, glabrous or thinly pubescent abaxially near base of midrib; petioles 3-9 cm, glabrous. Inflorescence of axillary or terminal 1-3-flowered cymes often borne on short branchlets; peduncles 0.4-2 cm, glabrous; bracteoles 3-6 × 1-2.5 mm, ovate to elliptic; pedicels 2-5 cm, glabrous; sepals subequal, 13-19 × 7-13 mm, ovate, obtuse, sometimes mucronate, abaxially glabrous, adaxially pubescent; corolla 5-8 cm long, funnel-shaped, glabrous or thinly pubescent on midpetaline bands, white with greenish tube, limb 5-7 cm diam.; stamens 3-4 cm long; style globose to slightly elongate. Capsules 2-2.5 cm long, ellipsoid; seeds with long marginal hairs.

Distribution.

Endemic to dry scrub in central Mexico, mostly found in Jalisco but also reported from Zacatecas, Nayarit and Michoacán.

MEXICO. Jalisco: C.G. Pringle 2443 (BM, GH, K, MICH, MO, UC, US); El Cerrito, Zacoalco de Torres, J.A. Lomeli 3140 (MEXU); Tala, A. Rodríguez & J. Reynosa 1147 (MEXU); Calvillo-Guadalajara, J.S. Miller et al. 363 (MEXU, MO). Michoacán: Caula, SW of Morelia, J.C. Soto Nuñez & L. Cortes 2376 (MEXU). Nayarit: Ixtlan del Rio, R. Acevedo & J. Sosa 1247 (MEXU). Zacatecas: Juchipila, J.J. Balleza & M. Adame 7909 (MEXU); E.D. Enriquez 357 (MEXU).

Note.

Similar to Ipomoea wolcottiana and I. pauciflora but distinguished by the larger subequal sepals 13-19 mm long, these sometimes mucronate. The corolla is apparently larger, 7-8 cm long.