Ipomoea alba L.

Tropical white morning-glory (en)

Species

Angiosperms > Solanales > Convolvulaceae > Ipomoea

Characteristics

A glabrous or rarely pubescent annual or perenniall twiner, containing a white milky juice. Stems herbaceous or lignescent1 at the base, slender, terete, to 5 m high, smooth or sometimes muricated. Leaves ovate or orbicular in outline, rarely oblong to ovate-oblong, 6-20 by 5-16 cm, the margin entire, or 3-lobed often on the same plant, cordate at the base with a broad or narrow rounded sinus and with broadly rounded or sometimes angular lobes, acuminate at the apex with an acute or obtuse, mucronulate acumen; petiole slender, 5-20 cm. Inflorescences axillary, one-to several-flowered; the flowers in a cincinnus, rarely dichasial; peduncle stout, terete, 1-24 cm. Pedicels 7-15 mm, much thickened and clavate in fruit and then up to 25-30 mm. Bracts small, caducous. Sepals subcoriaceous, elliptic, glabrous, unequal, the 2 or 3 outer ones shorter, 5-12 mm and with a long, thick, recurved or patent awn, 4-9 mm long; the inner ones longer, 8-15 mm, mucronulate, with a much shorter and thinner mucro, 2-3 mm long; sepals often reflexed in fruit. Corolla opening after sunset, fragrant, salver-shaped, white with greenish bands; the cylindrical to slightly angular tube 7-12 cm long, suddenly expanding into a 11-14 cm broad rotate limb. Stamens and style exserted; stamens inserted in the upper part of the corolla-tube; filaments glabrous. Ovary glabrous. Capsule ovoid, mucronate, 2½-3 cm high, glabrous, 2-celled, 4-valved. Seeds 4, glabrous, yellowish white to brown or black, 10-12 by 7-9 mm.
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Herbs annual or perennial, twining, usually glabrous, rarely puberulent. Stems to 10 m, terete, smooth or with soft prickles, sap milky. Petiole 5-20 cm; leaf blade ovate to ± circular in outline, 10-20 X 5-16 cm, base cordate, margin entire, angular to 3-lobed, apex acuminate, mucronulate. Inflorescences helicoid cymes, rarely dichasial, 1-to several flowered; peduncle stout, terete, 1-24 cm; bracts early deciduous, small. Pedicel 7-15 cm, clavate distally, enlarged in fruit. Flowers nocturnal, fragrant. Sepals elliptic to ovate, ± leathery, glabrous; outer 3 sepals 5-12 mm, apex with a stout spreading awn 4-9 mm; inner 2 sepals 7-15 mm, mucronate. Corolla white, with greenish bands, salverform; tube 7-12 cm, ca. 5 mm in diam.; limb 7-12 cm in diam., shallowly 5-undulate. Stamens exserted; filaments inserted in apical 1/2 of corolla tube, glabrous; anthers sagittate basally. Pistil exserted; ovary narrowly conical, glabrous. Stigma 2-lobed. Capsule ovoid, 2.5-3 cm, apiculate. Seeds white, brown, or black, ca. 10 7-8 mm, glabrous. 2n = 28*, 30*, 38*.
A glabrous or very rarely pubescent, annual or perennial; stems prostrate or twining, up to 2.4 m. long, smooth or rarely muriculate.. Leaf-blade ovate or orbicular in outline, entire or 3-lobed, 6–20 cm. long, 5–16 cm. wide, acute, acuminate or obtuse at the mucronulate apex, cordate at the base; petiole 5–20 cm. long.. Inflorescences axillary, 1–several-flowered; peduncle stout, 1–24 cm. long; pedicels 0.7–1.5 cm. long, lengthening to 2.5–3 cm. long and becoming very thick in fruit.. Sepals elliptic, unequal; outer 2–3 sepals 5–12 mm. long, 6–7 mm. wide, with a long awn-like appendage 4–10 mm. long at the apex (Fig. 22/4, p. 102); inner sepals longer, 8–15 mm. long, 9 mm. wide, shortly mucronulate.. Corolla opening at night, scented, white or greenish-cream below; tube cylindrical, 7–12 cm. long, 5 mm. wide; limb salver-shaped, 11–16 cm. wide.. Capsule ovoid, 2.5–3 cm. tall, glabrous.. Seeds 4, ovoid, white to black, glabrous, 10–12 mm. long, 7–9 mm. wide.
Herbaceous annual or perennial, usually glabrous. Stems prostrate or twining, laticiferous, smooth or sometimes muriculate, up to 5 m long. Leaves oblong to orbicular in outline, 60-120 x 50-160 mm, entire or 3-lobed, apex acuminate, mucronulate, base cordate, basal auricles rounded to angular, margin entire; petiole 50-200 mm long. Inflorescence axillary, 1-several-flowered; peduncle stout, 10-240 mm long; bracteoles small; pedicels up to 30 mm long and very thick in fruit. Sepals unequal, elliptic; outer ones 5-10 mm long with a long awn-like appendage; inner ones 8-15 mm long, shortly mucronulate. Corolla salver-shaped, opening at night, fragrant, white, greenish cream-coloured below; tube 70-150 mm long, cylindrical; limb 110-160 mm wide. Capsule ovoid, mucronate, glabrous, 25-30 mm long. Seeds 4, ovoid, 10-12 mm long, white, brown or black, glabrous, smooth. Flowering time throughout the year, mostly January and February.
Glabrous, fibrous-rooted perennial. Stems twining, sometimes muricate. Petiole 2.5-3.8 cm long. Lamina 5.5-16 × 4-14 cm, broad-ovate, entire or with 2 small outwardly directed lobes towards the base, deeply cordate with ± rounded sinus; apex usually acuminate. Infl. axillary, cymose, 1-few-flowered; peduncles stout; pedicels to 1 cm long, stout. Bracts small, caducous. Sepals 1.7-2 cm long, elliptic, unequal; outer 2 or 3 sepals with long patent or curved awns, the inner at most mucronate. Corolla 9.5-11 cm diam. across the patent limb, white with green mid-petaline bands outside, salverform; tube narrow-cylindric, 8.25-9.5 cm long. Stamens with exserted part 1.5-2.5 cm long; filaments glabrous. Capsule 2.5-3 cm long, ovoid, prominently beaked. Seeds c. 10 × 7 mm, deep brown, glabrous.
Vines; stems herbaceous at the tips, becoming woody at the base, smooth or often with short fleshy prickles, occasionally rooting near the nodes, glabrous. Leaves rounded ovate, entire or 3-5-lobed, 5-15 cm long, basally cordate, apically acuminate, glabrous. Flowers in 1-to several-flowered cymes, inflorescences and peduncles glabrous; sepals fleshy, ovate to elliptic, 10-20 mm long, apically a A recently observed fruiting collection from Venezuela shows that I. squiamosa is indeed a member of the Eriospermum group.
A twining plant which keeps growing from year to year. It can climb to 5 m high and spread to 20 m across. It is often grown as an annual plant. The leaves are oval or rounded and sometimes with 3 lobes. They are deep green in colour. Leaves are 10-20 cm long. The flowers are trumpet shaped and occur as 1-8 together. They are 12-14 cm across and tinted green on the outside. They have a sweet smell and open at night.
caudate at least on the outer sepals; corolla white with greenish nectar-guides, the tube 9-15 cm long, the rotate limb 8-10 cm broad. Fruits capsular, ovoid to subglobose, 2-3 cm long, 1-2 cm in diameter, with a 7-10 mm apiculus, mostly dark brown, glabrous; seeds dark brown to black, 8-10 mm long, glabrous.
Twining or prostrate annual or perennial herb. Leaves ovate or circular in outline, entire or 3-lobed. Inflorescence 1-several-flowered. Sepals distinctly awned. Corolla tube 70-120 mm long. Seeds glabrous. Flowers white or greenish cream below, opening at night.
Sepals unequal, elliptic, coriaceous, often reflexed in fruit and glabrous; outer 2–3 sepals 5–12 mm. long with long awn-like appendage 4–10 mm. long at the apex; inner ones longer, 8–15 mm. long, shortly mucronulate.
Leaf-lamina ovate or circular, in outline, entire or 3-lobed, 6–20 × 5–16 cm., acute, acuminate or obtuse at the mucronulate apex, cordate at the base; petiole 5–20 cm. long, slender.
Inflorescence axillary, 1-several-flowered; peduncle stout, 1–24 cm. long; pedicels 0·7–1·5 cm. long, lengthening to 2·5–3 cm. long and becoming very thick and clavate in fruit.
Corolla opening at night, scented, white or greenish-cream below; tube cylindrical 7–12 × 0·5 cm.; limb salver-shaped, 11–16 cm. wide.
Ornamental species, annual or perennial, glabrous or rarely pubescent.
Large white flowers 4-6 in. across the limb, exping fragrant at night
Stems twining or prostrate, thick, smooth or rarely muriculate.
A strong twiner with stems smooth or sparingly tuberculed
Seeds 4, ovoid, brown or black, glabrous and smooth.
Capsule mucronulate 2·5–3 cm. long, glabrous.
Life form perennial
Growth form herb
Growth support climber
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 10.5
Mature height (meter) 10.0
Root system fibrous-root
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c3

Environment

A tropical plant. It grows throughout the tropics. It needs a temperature above 7°C. It requires a fertile, well drained soil and a sunny position. In Java it grows up to 1,000 m above sea level. It suits hardiness zones 10-12. In Sichuan and Yunnan.
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Widely distributed in the settled areas at low and medium altitudes; cultivated and run wild in thickets, hedges, along waysides and edges of forests.
Wild in secondary vegetation, but often cultivated for ornament.
Wet forests, watercourses and disturbed areas in China.
Wet forests, watercourses and disturbed areas in China.
Light 6-8
Soil humidity 3-7
Soil texture 3-6
Soil acidity 3-7
Soil nutriment -
Hardiness (USDA) 8-11

Usage

Uses. Often cultivated in gardens for its nocturnal, fragrant flowers. The young leaves are eaten as a vegetable (according to HEYNE Nutt. Pl. Ned. Ind. 1927 ); the dried flowers (sundal malam, sĕdĕp malam) are used in pies and in kimlo (Chinese vegetable soup) (according to OCHSE Veget. D.E.I. 1931 ).
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The young leaves and fleshy calyces are steamed and eaten as a vegetable. They are also used in curries, soups and stews. They can be used fresh or dried. Seed are eaten when young. The dried flowers or calyces are used in vegetable soup. The roots are cooked and eaten.
Uses environmental use food food additive material medicinal poison
Edible flowers fruits leaves roots seeds
Therapeutic use Antifungal agents (flower), Constipation (leaf), Edema (leaf), Filariasis (leaf), Furunculosis (leaf), Wounds and injuries (leaf), Cathartics (root), Snake bites (seed), Eye drops (shoot), Ache(Stomach) (unspecified), Antidote(Nettle) (unspecified), Boil (unspecified), Collyrium (unspecified), Filariasis (unspecified), Laxative (unspecified), Nausea (unspecified), Wound (unspecified), Diuretic (unspecified), Antidote (unspecified), Deobstruent (unspecified), Tumor (unspecified), Purgative (unspecified), Laxatives (unspecified), Snake bites (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown from seed. Seed should be soaked in warm water for 12 hours before sowing. Seed germinate in 1-3 weeks at 22°C. It forms small tubers along the stem and can be grown from them. Plants can be grown from cuttings of the shoots.
Mode cuttings seedlings
Germination duration (days) 7 - 14
Germination temperacture (C°) 21
Germination luminosity -
Germination treatment scarification soaking
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Leaf

Ipomoea alba leaf picture by Jaqueline Campos Mendonça (cc-by-sa)
Ipomoea alba leaf picture by Muhammad Ahmad Bakari (cc-by-sa)
Ipomoea alba leaf picture by Jonna Wiles (cc-by-sa)

Flower

Ipomoea alba flower picture by Juan Cruz Borrego (cc-by-sa)
Ipomoea alba flower picture by Lozano Ale (cc-by-sa)
Ipomoea alba flower picture by Trap Hers (cc-by-sa)

Distribution

Ipomoea alba world distribution map, present in Angola, Argentina, American Samoa, Benin, Bangladesh, Bahamas, Belize, Bolivia (Plurinational State of), Brazil, Bhutan, Central African Republic, China, Côte d'Ivoire, Cameroon, Congo, Cook Islands, Colombia, Costa Rica, Cuba, Dominica, Ecuador, Ethiopia, Fiji, Micronesia (Federated States of), Ghana, Guinea, Guadeloupe, Equatorial Guinea, Guatemala, French Guiana, Guam, Guyana, Honduras, India, Jamaica, Kenya, Liberia, Sri Lanka, Madagascar, Mexico, Myanmar, Mozambique, Martinique, Mauritius, Malaysia, Nigeria, Nicaragua, Nepal, New Zealand, Pakistan, Panama, Philippines, Papua New Guinea, Puerto Rico, Korea (Democratic People's Republic of), Paraguay, Réunion, Sudan, Sierra Leone, El Salvador, Sao Tome and Principe, Suriname, Seychelles, Turks and Caicos Islands, Togo, Thailand, Tonga, Trinidad and Tobago, Taiwan, Province of China, Tanzania, United Republic of, Uganda, Uruguay, United States of America, Uzbekistan, Saint Vincent and the Grenadines, Venezuela (Bolivarian Republic of), Viet Nam, South Africa, and Zimbabwe

Conservation status

Ipomoea alba threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:129128-2
WFO ID wfo-0001297242
COL ID 3PVJV
BDTFX ID 167858
INPN ID 445571
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Bonanox indica Calonyction noctolucum Convolvulus latiflorus Ipomoea krusensternii Melascus latifolius Tremasperma bona-nox Bonanox riparia Ipomoea noctiluca Calonyction roxburghii Ipomoea carinata Convolvulus macrosolen Ipomoea latiflora Ipomoea roxburghii Ipomoea noctiflora Chonemorpha convolvuloides Calonyction macrantholeucum Calonyction rheedi Calonyction megalocarpum Ipomoea aculeata f. bonanox Ipomoea longiflora Ipomoea ambigua Ipomoea tubulosa Quamoclit longiflora Ipomoea maxima Ipomoea bona-nox Calonyction bona-nox Calonyction speciosum Convolvulus bona-nox Calonyction pulcherrimum Convolvulus pulcherrimus Calonyction album Ipomoea grandiflora Convolvulus maximus Convolvulus aculeatus Convolvulus duartinus Calonyction aculeatum f. apopetalum Calonyction aculeatum Convolvulus aculeatus var. bona-nox Ipomoea aculeata var. bona-nox Calonyction bona-nox var. lobatum Calonyction aculeatum var. lobatum Ipomoea aculeata var. heterophylla Ipomoea alba