Ipomoea chiriquensis Standl.

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

259. Ipomoea chiriquensis Standl. , Ann. Missouri Bot. Gard. 27: 334. 1940. (Standley 1940a: 334)

Type.

PANAMA. Upper valley of Río Chiriquí, P.H. Allen 1512 (holotype MO152718, isotypes GH, L, US).

Description.

Liana 3-6 m high, stems glabrous, latex present, white. Leaves petiolate, 10-19 × 9-11 cm, ovate, abruptly shortly acuminate, cordate, glabrous; petioles 7-14 cm. Inflorescence of pedunculate, axillary cymes of 2-6 flowers; peduncles 8-10 cm; bracteoles caducous, not seen; secondary peduncles 2 cm; pedicels 30-50 mm; sepals unequal, glabrous, outer 7-10 × 5 mm, oblong-ovate, acuminate, inner 12-15 × 7-8 mm, ovate to broadly oblong, rounded, mucronate, margins broad, scarious; corolla 6-9 cm long, midpetaline bands terminating in a tooth, white, glabrous, limb 7-8 cm diam.; stamens at mouth. Capsules 1.5 cm long, ovoid, glabrous; seeds glabrous.

Illustration.

Austin (1975b: 206).

Distribution.

Apparently rare localised to western Panama and Costa Rica in moist hill forest around 1800-2000 m.

PANAMA. Chiriqui: Nueva Suissa, T.B. Croat 13504 (MO).

COSTA RICA. A. Tonduz 11701 (MO). San José, Cordillera de Talamanca, Copey de Dota, M.M. Chavarria 1069 (K, MO).

Note.

This species is characterised by the long-peduncled, few-flowered cymes of white flowers with broad oblong-ovate, mucronate, mostly scarious inner sepals.