A species scattered in seasonally dry tropical forests below 1000 m in South America, most common in the Chiquitano dry forest of eastern Bolivia, around Guayaquil (Ecuador) and in northern Colombia and Venezuela. Previously known as Turbina abutiloides (Kunth) O’Donell, this formerly recognised genus is now treated as a synonym of Ipomoea.

Ipomoea abutiloides

DESCRIPTION: Liana climbing high over shrubs to 7 m, stems white-tomentose, especially when young, roots tuberous. Leaves petiolate, 3–10 × 3–11 cm, broadly ovate, base truncate to subcordate, apex retuse, rounded or obtuse, adaxially pubescent, abaxially grey-tomentose; petioles (1–)3–6(–10) cm, pubescent to tomentose. Inflorescence of axillary and terminal cymes, the later compound and often paniculate or racemose in form, sometimes distinctly leafy; peduncles 2–11 cm, tomentose; bracteoles 2–9 mm, linear, tomentose, soon caducous; short (c. 5 mm), secondary and tertiary peduncles often present; pedicels 5–25 mm, tomentose; calyx narrow and ±cylindrical, sepals subequal, 10–14 × 4–7 mm, oblong-obovate, obtuse to rounded, drying brown, glabrous or nearly so, inner c. 2 mm longer than outer, the margins broad and scarious; corolla 5–7 cm long, funnel-shaped, pink, pubescent in bud, glabrescent, limb 4–5 cm, weakly lobed. Capsules glabrous, ovoid, 14–17 × 6–7 mm; seeds reported as usually solitary, 9–10 mm long, minutely tomentellous.

PROTOLOGUE:  Gen. Hist. 4: 273. 1838

COUNTRIES: Bolivia, Colombia, Ecuador, Venezuela. See records in database

TYPE SPECIMENS:
Holotype (P)

SYNONYMS:
Convolvulus abutiloides Kunth.
Ipomoea abutiloides var. hartwegiana Kuntze
Ipomoea abutiloides var. kunthiana Kuntze
Ipomoea floribunda Moric.
Ipomoea floribunda var. blanchetii Meisn.
Rivea abutiloides (Kunth) Hallier
Turbina abutiloides (Kunth) O’Donell.

A liana endemic to Northern Australia, recorded in Queensland, Northern Territory and Western Australia states. According to Austin (1993), it occurs in Eucalyptus woodlands and open forests on sandy and skeletal soils, although Johnson (2012) noted this species is morphologically very variable and may contain several taxa. This species is part of a group of Australian endemic species nested in Ipomoea Clade A1, likely the result of long distance dispersal from the American continent followed by species diversification in Australia.

DESCRIPTION (from: Austin et al., 1993): Perennial vines; stems twining, woody, glabrous. Leaf blades broadly ovate, 7.5-12 cm long, 6-9 cm broad, basally cordate, the margins entire, apically acute to narrowly obtuse, emarginate, glabrous or with occasional trichomes on the midrib, the petiole 2-7 cm long. Inflorescence axillary, cymose, 1-5 flowered, often compound; peduncles 8-30 mm long. Flowers on pedicels 1.5-3 cm long, glabrous; sepals subequal, the outer two broadly ovate to orbicular, coriaceous, 8-15 cm long and broad, apex rounded, glabrous, very wrinkled at maturity, the inner broadly oblong of similar length but narrower; corolla funnelform, 6-10 cm long, pink with a darker throat, mid-petaline bands glabrous; stamens unequal, inserted 1.5-2 cm above the corolla base, the filaments 2.5-3.5 cm long, pubescent in the lower half, anthers oblong, 7-8 mm long; ovary 2-locular, ovoid, glabrous, the style 4-5 cm long, the stigma biglobose. Fruits capsular, globose to globose-ovoid, with a persistent style base, 1.2-1.5 cm long, brown; seeds 4 or fewer, 5-6 mm long, dark olive brown, loosely pubescent with longer trichomes on the margins.

COUNTRIES: Australia. See records in database.

PROTOLOGUE: Pdr. Fl. Nov. Holland.: 485

TYPE SPECIMENS: Holotype (BM)

SYNONYMS:
Convolvulus abruptus (R.Br.) Spreng.