Pacific Island Ecosystems at Risk (PIER)

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Merremia umbellata
(L.) H.Hallier, Convolvulaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Convolvulus umbellatus L.; Ipomoea polyanthes Roem. & Schult.

Common name(s): [more details]

English: hogvine, yellow merremia, yellow wood rose

Fijian: sovivi

Habit:  vine

Description:  (subsp. orientalis (Hallier f.) van Ooststr.): "Perennial, creeping, sprawling, or twining vine...;the stems with white latex and becoming woody; petioles 1.5-10 cm long; leaf blades entire, narrowly deltoid to broadly ovate, 4-12 (-16) cm long, truncate to cordate or hastate at base, usually long-acuminate; sepals broadly elliptic or oblong to orbicular, 5-10 mm long, subequal or the outer ones slightly the shorter; corolla hypocrateriform, 2-3 (-3.5) cm long, yellow (sometimes white or orange); fruit ovoid to conical, 10-12 mm long, the seeds dark brown, 5-6.5 mm long, densely pubescent" (Smith, 1991; pp. 48-49).

Habitat/ecology:  In Fiji, "cultivated and also occasionally naturalized in thickets and on edges of forest from near sea level to about 400 m" (Smith, 1991; pp. 48-49).  "Locally common near the airport on Tutuila" (Whistler, 1988; p. 15). In New Caledonia, "assez commun à l'état spontané aux alentours du village de Koné" (MacKee, 1994; p. 42). "Fort curieusement cette espèce n'a jamais été récoltée, avant 1958, en Nouvelle-Calédonie; il est pourtant absolument sûr qu'il ne s'agit pas d'une introduction récente. Se rencontre communément dans les terrains vagues, aux alentours des villages" (Heine, 1984; pp. 40, 42). Moist uplands in the Galápagos Islands (McMullen, 1999; p. 307).

Propagation:  Seed

Native range:  Pantropical; the Old World population is now generally referred to as subsp. orientalis (Smith, 1991; 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
American Samoa
Tutuila Islands
Tutuila Island   Whistler, W. A. (1988) (p. 15)
Voucher cited: Wisner 88
American Samoa
Tutuila Islands
Tutuila Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1999) (voucher ID: PTBG 303)
Taxon name on voucher: Merremia umbellata
Cook Islands
Southern Cook Islands
Aitutaki Atoll   Whistler, W. A. (1988) (p. 15)
Voucher cited: Sykes 242
Cook Islands
Southern Cook Islands
Aitutaki Atoll   McCormack, Gerald (2013)
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)
Federated States of Micronesia
Pohnpei Islands
Pohnpei Island native
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 228)
Federated States of Micronesia
Pohnpei Islands
Pohnpei Island introduced
invasive
Herrera, Katherine/Lorence, David H./Flynn, Timothy/Balick, Michael J. (2010) (p. 81)
Vouchers cited: B. Ekiek 58 (NY, BISH), F.R. Fosberg 58373 (BISH)
Naturalized
Fiji
Fiji Islands
Ovalau Island introduced
invasive
cultivated
Smith, Albert C. (1991) (pp. 48-49)
ssp. orientalis. Voucher cited: DA 16997
Fiji
Fiji Islands
Viti Levu Island introduced
invasive
cultivated
Smith, Albert C. (1991) (pp. 48-49)
ssp. orientalis. Vouchers cited: DA 18854, DA 10190, DA 10193
French Polynesia
Society Islands
Moorea Island   University of California (2006)
ssp. orientalis
"Common roadside, often found with Wedelia trilobata".
French Polynesia
Society Islands
Moorea Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1967) (voucher ID: PTBG 45939)
Taxon name on voucher: Merremia umbellata
French Polynesia
Society Islands
Raiatea (Havai) Island introduced
Welsh, S. L. (1998) (p. 87)
Voucher cited: BRY 25735
French Polynesia
Society Islands
Raiatea (Havai) Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
subsp. orientalis (H.G. Hallier) S.J. Ooststroom. Voucher cited: J. Florence 10377 (PAP)
Adventice
French Polynesia
Society Islands
Tahiti Island introduced
Welsh, S. L. (1998) (p. 87)
Voucher cited: BRY 24892
French Polynesia
Society Islands
Tahiti Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Vouchers cited: J. Florence 3131 (PAP), F.R. Fosberg & J. Florence 62640 (PAP); subsp. orientalis (H.G. Hallier) S.J. Ooststroom: F.R. Fosberg 65021 (PAP)
Adventice
French Polynesia
Tuamotu Archipelago
Makatea (Ma‘atea) Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Adventice
French Polynesia
Austral (Tubuai) Islands
Rimatara (Rimitara) Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Adventice
State of Hawaii
Hawaiian Islands
Hawai‘i (Big) Island introduced
Wester, Lyndon (1992) (p. 136)
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
cultivated
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 563)
Voucher cited: Corn s. n. (BISH)
Escape from cultivation.
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
Imada, Clyde T./Staples, George W./Herbst, Derral R. (2000) (p. 11)
Voucher cited: R. Heu & R. Hamasaki s.n. (BISH 658030, FAU, NY, US)
Fully naturalized on windward O‘ahu.
New Caledonia
New Caledonia Archipelago
Île Grande Terre introduced
invasive
Tassin, Jacques (2005)
New Caledonia
New Caledonia Archipelago
Île Grande Terre introduced
invasive
MacKee, H. S. (1994) (p. 42)
Vouchers cited: MacKee 6465, MacKee 15576, MacKee 31250
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island   Beleu National Museum (Republic of Palau. Koror.) (1969) (voucher ID: BNM 296)
Taxon name on voucher: Merremia umbellata
Papua New Guinea
Bismarck Archipelago
Bismarck Archipelago   Peekel, P. G. [translated by E. E. Henty] (1984) (p. 469)
Philippines
Philippine Islands
Philippine Islands native
Merrill, Elmer D. (1923) (p. 362)
In thickets at low and medium altitudes, usually common.
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
China
China
Hong Kong native
Wu, Te-lin (2001) (p. 224)
subsp. orientalis (Hall. f.) Oostr. In thin forests or thickets.
El Salvador
El Salvador
El Salvador (Republic of)   Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 235)
Honduras
Honduras
Honduras (Republic of)   Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 235)
Indonesia
Indonesia
Indonesia (Republic of)   Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 235)
Panama
Panama
Panama (Republic of)   Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 235)
Singapore
Singapore
Singapore (Republic of) uncertain if introduced
invasive
Chong, Kwek Yan/Tan, Hugh T. W./Corlett, Richard T. (2009) (p. 60)
Weed of uncertain origin

Comments:  "Introduced into Fiji as an ornamental but becoming naturalized, as it is also in Samoa and the Society Islands" (Smith, 1991; pp. 48-49).


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This page was created on 5 AUG 2002 and was last updated on 19 OCT 2006.