A twining herb widespread in South America and Africa. In the American continent, it has been recorded from Bolivia in the south up to Colombia and Guyana in the north, and there is one record from Costa Rica. In Africa it is widely distributed across the Sahel region from Senegal and Sierra Leone east to Sudan and Ethiopia. In India it has recently been discovered in Gujerat (see Kattee et al. 2019).

Ipomoea acanthocarpa

DESCRIPTION (from: Wood et al., 2020): Glabrous twining herb. Leaves petiolate, 2–11 × 1.5–8 cm, ovatedeltoid, shortly and often abruptly acuminate or acute, cordate, auricles rounded to acute, often with a distinct tooth and sometimes shallowly bilobed, abaxially with prominent venation; petioles 1–8 cm. Inflorescence of few-flowered, somewhat congested, pedunculate cymes; peduncles 1–6 cm, often stout and somewhat swollen upwards, sometimes warty; bracteoles 2–3 mm, scale-like, caducous; pedicels 2–5 mm, sometimes warty; sepals slightly unequal, 5–10 × 3.5–7 mm, the margins white, outer ovate, acute to mucronate, usually conspicuously warty but otherwise glabrous, inner obtuse and mucronate, smooth, slightly larger; corolla 2–3 cm long, funnel-shaped, pink or white, glabrous, limb c. 2.5 cm diam., the midpetaline bands terminating in mucros. Capsules 9–10 mm, subglobose, rostrate with prominent persistent style, glabrous; seeds 5.5 mm long, grey, long-pilose.

PROTOLOGUE: Beitr. Fl. Aethiop.: 277. 1867

COUNTRIES: AFRICA: Chad, Ethiopia, Senegal, Sudan. AMERICA: Bolivia, Brail, Colombia, Costa Rica, Ecuador, French Guiana, Guyana, Peru, Venezuela. ASIA: India. See records in database

Isotype (NY00319232)

Calonyction acanthocarpum Choisy
Ipomoea piurensis O’Donell
Ipomoea piurensis f. rosea O’Donell