Pacific Island Ecosystems at Risk (PIER)

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Merremia quinquefolia
(L.) Hall. f., Convolvulaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  Reject, score: 8 (Go to the risk assessment).

Other Latin names:  Convolvulus quinquefolius (L.) L.; Ipomoea quinquefolia L.

Common name(s): [more details]

English: five-fingered morningglory, mile-a-minute, rock rosemary

Habit:  vine

Description:  "Usually a small herbaceous vine, sometimes prostrate, the stems glabrous or sparsely hirsute; leaves long-petiolate, the 5 leaflets subsessile, elliptic or lanceolate, glabrous, acute or acuminate, sinuate-dentate, 2-7 cm. long; inflorescence a simple 3-flowered, or rarely compound, dichasium or reduced to a single flower, axillary and usually longer than the leaf, the peduncles glandular-pilose, the pedicels 1-1.5 cm. long; sepals unequal, oblong, obtuse, glabrous, the outer ones 3-5 mm. long, the inner ones 4-7 mm. long; corolla white, 1.5-2.5 cm. long; capsule glabrous, 7-8 mm. broad, subglobose, 4-celled; seeds 4, pubescent"  (Standley & Williams, 1970; p. 74).

"Herbaceous prostrate or climbing vine; leaves, palmately compound with 5 leaflets, leaflets oblong to lanceolate, 2.5 to 6 cm long; petioles, 2 to 5 (rarely up to 9) cm long; flowers, borne in axillary, solitary or several-flowered cymes, the peduncles glandular in the upper part and sometimes mixed with spreading bristly hairs; sepals, 4 to 8 mm long, narrowly ovate to oblong, obtuse, subequal or the outer ones shorter; corolla, 1.8 to 2.5 cm long, pale yellow or whitish; fruit, about 9 mm long, capsular, globose, stramineous, 4-valved; seeds, about 4.5 mm long, shortly curled-pilose, blackish" (Thaman et al., 1994; p. 119).

Habitat/ecology:  "Annual herbaceous weed common in cultivated fields, perennial crops, pastures, roadsides and ditchbanks"  (Cardenas et al., 1972; p. 147).

Propagation:  Seed (Cardenas et al., 1972; p. 147).

Native range:  West Indies (Thaman et al., 1994; p. 119). West Indies, Mexico, Central America, northern and western South America; naturalized elsewhere (GRIN).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
French Polynesia
Society Islands
Tahiti Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Voucher cited: J. Florence 11474 (PAP)
Adventice. Sur sol nu et dans le tapis herbacé, localement aggressive.
Nauru
Nauru Island
Nauru Island introduced
invasive
Thaman, R. R./Fosberg, F. R./Manner, H. I./Hassall, D. C. (1994) (p. 119)
Rare. Voucher cited: Fosberg 58765 (US)
Tonga
Vava‘u Group
Vava‘u Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2000) (voucher ID: PTBG 42870)
Taxon name on voucher: Merremia quinquefolia
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)
Australia (continental) introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Central America
Central America (Pacific rim)
Costa Rica (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Central America
Central America (Pacific rim)
El Salvador (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Central America
Central America (Pacific rim)
Guatemala (Republic of) native
Standley, Paul C./Williams, Louis O. (1970) (p. 74)
Central America
Central America (Pacific rim)
Honduras (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Central America
Central America (Pacific rim)
Nicaragua (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Central America
Central America (Pacific rim)
Panama (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Malaysia
Malaysia
Malaysia (country of) introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Mexico
Mexico
Mexico (United Mexican States) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
South America (Pacific rim)
South America (Pacific rim)
Colombia (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
South America (Pacific rim)
South America (Pacific rim)
Perú (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Also reported from
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
United States (continental except west coast)
United States (other states)
USA (Florida) introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)


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This page was created on 3 SEP 2005 and was last updated on 21 MAY 2013.