Ipomoea pes-tigridis L., Convolvulaceae

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Present on Pacific Islands?  no

Primarily a threat at high elevations?  no

Common name(s): [more details]

Chinese: hu zhang teng

English: morningglory

Habit:  vine

Description:  "Vines; the stems slender or stout, trailing or less commonly twining, covered with long spreading yellow bristly trichomes; annual.  Leaves palmately 7-9-lobed, often almost to the base of the blade, to 10.5 cm long and 13 cm wide in outline, the lobes narrowly oval to obovate, narrowed above and below, subacute apically, 1.6-7 cm long, 1-2.8 cm wide, thinly pubescent to strigose on both surfaces.  Inflorescences of few-flowered, bracteate heads on pubescent peduncles up to 14 cm long, the bracts foliaceous, oblong to oblong-lanceolate, pubescent outside, the outer to 5 cm long and 6 mm wide, the inner narrower and shorter.  Flowers subsessile; sepals lanceolate to narrowly lanceolate, 8-12 mm long, pubescent; corolla white, pink or purple, if colored then with a darker throat, funnelform, 3.5-5 cm long.  Fruits capsular, brown, ovoid, 8-9 mm long, glabrous; seeds black, 4 mm long, grey pubescent" (Dassanayake, 1981; p. 336).

Habitat/ecology:  In Sri Lanka, "plants occur in disturbed sites such as grasslands, bushlands, cultivated ground and roadsides"  (Dassanayake, 1981; p. 336).

Propagation:  Seed

Native range:  Tropical Africa and Asia, now found in most tropical countries (Smith, 2002; pp. 48-49).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Papua New Guinea Papua New Guinea (eastern New Guinea Island)	Papua New Guinea (eastern New Guinea Island)	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)
Philippines Philippine Islands	Philippine Islands	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)
Philippines Philippine Islands	Philippine Islands	native	Merrill, Elmer D. (1923) (p. 367) In open grasslands and waste places at low and medium altitudes.

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia Australia (continental)	Northern Territory	native invasive	Smith, Nicholas M. (2002) (pp. 48-49)
Australia Australia (continental)	Queensland	introduced invasive	Smith, Nicholas M. (2002) (pp. 48-49)
Cambodia Cambodia	Cambodia (Kingdom of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)
China China	China (People's Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)
Indonesia Indonesia	Indonesia (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)
Japan Japan	Japan (country)	introduced	Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 187)
Malaysia Malaysia	Malaysia (country of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)
Taiwan Taiwan	Taiwan Island	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)
Thailand Thailand	Thailand (Kingdom of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)
Vietnam Vietnam	Vietnam (Socialist Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)

Indian Ocean
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
British Indian Ocean Territory Chagos Archipelago	Diego Garcia Island	introduced invasive	Rivers, Julie (2004) (p. 3)

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

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

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

References:

Dassanayake, M. D., gen. ed. 1981. A revised handbook to the flora of Ceylon. Vol I. Amerind Pub. Co., New Delhi. 508 pp.

Merrill, Elmer D. 1923. An enumeration of Philippine flowering plants, vol. 3 [reprint]. Bureau of Printing, Manila. 628 pp.

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.

Rivers, Julie. 2004. Botanical survey update of Diego Garcia, Chagos Archipeligo, British Indian Ocean Territory. Naval Facilities Engineering Command, Pacific. 16 pp. plus "List of the higher plants of Diego Garcia".

Smith, Nicholas M. 2002. Weeds of the wet/dry tropics of Australia - a field guide. Environment Centre NT, Inc. 112 pp.

U. S. Government. 2011. Integrated Taxonomic Information System (ITIS) (on-line resource).

U.S. Dept. Agr., Agr. Res. Serv. 2011. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.

Zhengyi, Wu/Raven, Peter H./Deyuan, Hong. 2011. Flora of China (online resource).