Pacific Island Ecosystems at Risk (PIER)

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Ipomoea nil
(L.) Roth, Convolvulaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Convolvulus nil L.; Pharbitis limbata Lindl.; Pharbitis nil (L.) Choisy

Common name(s): [more details]

Chinese: qian niu

English: blue morning glory

French: liseron bleu

Habit:  vine

Description:  "Annual or sometimes short-lived perennial, with twining to decumbent-creeping, slender, somewhat angular stems 2-5 m long; herbage sparsely to moderately hirsute with tawny, simple hairs 1-4 mm long, hairs spreading to slightly retrorse; leaf blades suborbicular, entire to narrowly and shallowly to moderately 3-lobed, 3-18 cm long, 3-20 cm wide, cordate with narrow sinus, acute to short-acuminate at apex and tips of lateral lobes, auricles rounded and entire, dark green, sparsely subappressed-hirsute on upper surface, much paler and more densely hirsute beneath; inflorescence cymose on peduncles 1-15 cm long, retrorsely hirsute; bracts linear to lanceolate, 5-11 mm long; flowers 1 to several on each peduncle; sepals linear, 15-30 mm long, nearly equal, bases ovate, 2.5-3 mm wide, gradually narrowing into linear terminal blade, densely hirsute; corolla funnelform, 2.5-6 cm long, pale blue to deep blue, throat and tube gradually ampliate, paler than limb, this 3-5 cm across, glabrous without; stamens subequal, the shorter 12-40 mm long, the longer 15-45 mm long, conspicuously glandular-hirsute toward base; style 15-30 mm long, slender; stigma shallowly bilobed, granular; capsules ovoid to depressed-subglobose, 7-8 mm high, 8-12 mm thick, 3-6-seeded; seeds 4.5-6 mm long, black or brown, sparsely to densely grayish-puberulent, or sometimes nearly glabrous"  (Wiggins & Porter, 1971; pp. 378-379).

Habitat/ecology:  "A pantropical species" (Wiggins & Porter, 1971; pp. 378-379). Arid lowlands in the Galápagos Islands (McMullen, 1999; p. 316).

Propagation:  Seed

Native range:  Pantropic (GRIN).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Ecuador (Galápagos Islands)
Floreana Group
Floreana Island introduced
invasive
Charles Darwin Foundation (2008)
Ecuador (Galápagos Islands)
Isabela Group
Isabela Island introduced
invasive
Charles Darwin Foundation (2008)
Ecuador (Galápagos Islands)
Isabela Group
Volcán Alcedo, Isabela Island introduced
invasive
Charles Darwin Foundation (2008)
Ecuador (Galápagos Islands)
Pinta Group
Pinta Island introduced
invasive
Charles Darwin Foundation (2008)
Ecuador (Galápagos Islands)
San Cristóbal Group
San Cristóbal Island introduced
invasive
Charles Darwin Foundation (2008)
Ecuador (Galápagos Islands)
Santa Cruz Group
Santa Cruz Island introduced
invasive
Charles Darwin Foundation (2008)
Ecuador (Galápagos Islands)
Santiago Group
Albany Island introduced
invasive
Charles Darwin Foundation (2008)
Ecuador (Galápagos Islands)
Santiago Group
Mao Islet, Santiago Island introduced
invasive
Charles Darwin Foundation (2008)
Ecuador (Galápagos Islands)
Santiago Group
Santiago Island introduced
invasive
Charles Darwin Foundation (2008)
New Caledonia
New Caledonia Archipelago
Île Grande Terre introduced
invasive
cultivated
MacKee, H. S. (1994) (p. 41)
Vouchers cited: MacKee 21044, MacKee 43978
Spontané
New Guinea (Indonesia and Papua New Guinea)
New Guinea Island
New Guinea Island introduced
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
China
China
China (People's Republic of) introduced
invasive
cultivated
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Thickets on mountain slopes, waysides, fields, hedges; 0-1600 m. Cultivated or escaped.
Honduras
Honduras
Honduras (Republic of)   Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 195)
Japan
Japan
Japan (country) introduced
Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 187)
Japan
Ryukyu Islands
Ryukyu Islands introduced
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Mexico
Mexico
Mexico (United Mexican States)   Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 195)
Taiwan
Taiwan Island
Taiwan Island introduced
invasive
cultivated
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Thickets on mountain slopes, waysides, fields, hedges; 0-1600 m. Cultivated or escaped.
Thailand
Thailand
Thailand (Kingdom of) introduced
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Indian Ocean
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Australia (Indian Ocean offshore islands)
Christmas Island Group
Christmas Island introduced
invasive
Swarbrick, J. T. (1997) (p. 116)
French Territory of Mayotte
Mayotte Islands
Mayotte Island introduced
Comité français de l'Union Internationale pour la Conservation de la Nature en France (2013)
Naturalisée, potentiellement envahissant.

Additional information:
Additional online information about Ipomoea nil is available from the Hawaiian Ecosystems at Risk project (HEAR).

Information about Ipomoea nil as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

Taxonomic information about Ipomoea nil may be available from the Germplasm Resources Information Network (GRIN).

References:

Charles Darwin Foundation. 2008. Database inventory of introduced plant species in the rural and urban zones of Galapagos. Charles Darwin Foundation, Galapagos, Ecuador.

Comité français de l'Union Internationale pour la Conservation de la Nature en France. 2013. Les espéces envahissantes en outre-mer (online resource).

Heine, Heino. 1984. 13. Convolvulacées. In: Morat, Ph.. et H. S. MacKee. Flore de la Nouvelle-Calédonie et Dépendances. Muséum National d'Histoire Naturelle, Paris.

Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. 1979. A geographical atlas of world weeds. John Wiley & Sons, New York. 391 pp.

MacKee, H. S. 1994. Catalogue des plantes introduites et cultivées en Nouvelle-Calédonie. Muséum National d'Histoire Naturelle, Paris, 164 p.

McMullen, C. K. 1999. Flowering plants of the Galápagos. Comstock Pub. Assoc., Ithaca, N.Y. 370 p.

Mito, Toshikazu/Uesugi, Tetsuro. 2004. Invasive alien species in Japan: the status quo and the new regulation for prevention of their adverse effects. Global Environmental Research 8(2)/2004: 171-191.

Swarbrick, J. T. 1997. Environmental weeds and exotic plants on Christmas Island, Indian Ocean: a report to Parks Australia. 101 pp. plus appendix.

Wiggins, I. L./Porter, D. M. 1971. Flora of the Galapágos Islands. Stanford University Press. 998 pp.

Zhengyi, Wu/Raven, Peter H./Deyuan, Hong. 2013. Flora of China (online resource).


Need more info? Have questions? Comments? Information to contribute? Contact PIER! (pier@hear.org)

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This page was created on 22 JUN 2004 and was last updated on 24 MAR 2007.