Pacific Island Ecosystems at Risk (PIER)

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Operculina ventricosa
(Bert.) Peter, Convolvulaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Operculina turpethum (L.) Silva Manso var. ventricosa (Bertero) Austin & Staples

Common name(s): [more details]

Chamorro: alalag

English: paper rose, St. Thomas lidpod

Samoan: pālulu, pālulu

Tongan: fue hina

Habit:  vine

Description:  "Very coarse, extensive, appressed pubescent twiner, stems terete; leaves very large, to 30 cm or more across, orbicular cordate, very shortly acuminate, petioles 15-20 cm long; peduncles stout, to 30 cm long, with compact cymes of up to 7 flowers; bracts conspicuous, orbicular to oval, membranous, concave, pubescent, somewhat persistent, 2.5-4 cm long; sepals orbicular, obtuse, mucronulate, accrescent; corolla white, campanulate or broadly funnel-form, about 5 cm long; stamens strongly included, anthers tightly coiled; capsule globose, about 2.5 cm long; seeds black, glabrous"  (Fosberg and Sachet, 1977; pp. 29-30).

"A large pubescent maritime vine with milky sap; leaves broadly ovate to sub-orbicular, to 2- x 20 cm, on long hirsute petioles; peduncles to 12 cm long; sepals ovate, 3 cm; corolla white, 5-7.5 cm long, capsule with 4 smooth black seeds" (Stone, 1970; p. 496).

"Operculina ventricosa differs from O. turpethum in having its stems terete (rather than short-pilose and often glabrate), its peduncles with more numerous flowers (sometimes as many as 7 rather than 1-3), and its corollas, capsules, and seeds somewhat larger" (Smith, 1991; pp. 45-46).

Habitat/ecology:  "Common in disturbed places, climbing in thickets and covering the ground in great mats; it has only recently become common in Guam... It may have been introduced there from Saipan or Tinian on aircraft at that time."  (Fosberg and Sachet, 1977; pp. 29-30). In New Caledonia, "espèce originaire d'Amérique tropicale mai introduite depuis longtemps dans plusieurs îles du Pacifique Sud; dans notre territoire elle fréquente les plateaux calcaires et les pentes rocheuses serpentineuses où elle s'enroule aux arbres" (Heine, 1984; p. 28).

Propagation:  Seed

Native range:  Suriname and Guadeloupe. Another species, Operculina turpethum, occurs from tropical Africa and Madagascar to southern Asia and Australia and eastward in the Pacific to the Society and Marquesas Islands (Smith, 1991; pp. 45-46).

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 introduced
invasive
Space, James C./Flynn, Tim (2000) (p. 37)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Agrigan (Agrihan) Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 228)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Alamagan Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 228)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Alamagan Island   Bishop Museum (Honolulu) (1950) (voucher ID: BISH 38736)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Anatahan Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 228)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Asuncion Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 228)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Asuncion Island   Bishop Museum (Honolulu) (1984) (voucher ID: BISH 667694)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Farallon de Medinilla (Marpi, Medinilla) Island   Wagner, W. L./ Herbst, D. R./Weitzman, A./Lorence, D.H. (2013)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Farallon de Medinilla (Marpi, Medinilla) Island   Bishop Museum (Honolulu) (1996) (voucher ID: BISH 646898)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Farallon de Medinilla (Marpi, Medinilla) Island   Bishop Museum (Honolulu) (1984) (voucher ID: BISH 665442)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Guguan Island introduced
Raulerson, L. (2006) (p. 58)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Maug Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 228)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Maug Island introduced
Fosberg, F. R./Falanruw, M. V. C./Sachet, M.-H. (1977) (p. 30)
Voucher cited: Dickinson & Mersereau 7 (US)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Maug Island   Bishop Museum (Honolulu) (1984) (voucher ID: BISH 665415)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Maug Island   Bishop Museum (Honolulu) (1984) (voucher ID: BISH 666175)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Pagan Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 228)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Pagan Island   Bishop Museum (Honolulu) (1950) (voucher ID: BISH 38737)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Pagan Island   Bishop Museum (Honolulu) (1954) (voucher ID: BISH 571589)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Rota Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 228)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Rota Island   Bishop Museum (Honolulu) (1973) (voucher ID: BISH 441691)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Saipan Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 228)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Saipan Island   Bishop Museum (Honolulu) (1950) (voucher ID: BISH 38735)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Saipan Island   Bishop Museum (Honolulu) (1946) (voucher ID: BISH 38739)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Saipan Island   Bishop Museum (Honolulu) (1948) (voucher ID: BISH 140411)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Sarigan Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 228)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Sarigan Island   Bishop Museum (Honolulu) (1966) (voucher ID: BISH 410825)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Tinian Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 228)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Tinian Island   Bishop Museum (Honolulu) (1946) (voucher ID: BISH 38738)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Tinian Island   Bishop Museum (Honolulu) (1946) (voucher ID: BISH 140412)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Tinian Island   Bishop Museum (Honolulu) (1952) (voucher ID: BISH 140414)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Tinian Island   Bishop Museum (Honolulu) (1946) (voucher ID: BISH 571588)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Cook Islands
Southern Cook Islands
‘Atiu Island   Sykes, Bill (year unknown)
Cook Islands
Southern Cook Islands
‘Atiu Island   Bishop Museum (Honolulu) (1991) (voucher ID: BISH 664500)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Cook Islands
Southern Cook Islands
‘Atiu Island   Bishop Museum (Honolulu) (1991) (voucher ID: BISH 664501)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Cook Islands
Southern Cook Islands
Mangaia Island   Sykes, Bill (year unknown)
Cook Islands
Southern Cook Islands
Rarotonga Island   McCormack, Gerald (2013)
Federated States of Micronesia
Yap Islands
Fais Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 228)
Federated States of Micronesia
Yap Islands
Fais Island introduced
invasive
Fosberg, F. R./Evans, M. (1969) (p. 12)
Voucher cited: Fosberg 46721 (US)
Guam
Guam Island
Guam Island introduced
invasive
Stone, Benjamin C. (1970) (p. 496)
Vouchers cited: Stone 4911 (GUAM), Stone 5163 (GUAM)
Adventive
Guam
Guam Island
Guam Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 228)
Guam
Guam Island
Guam Island   Bishop Museum (Honolulu) (1954) (voucher ID: BISH 38740)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
Guam
Guam Island
Guam Island   Bishop Museum (Honolulu) (1977) (voucher ID: BISH 437075)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter
New Caledonia
Récifs D'Entrecasteaux (D'Entrecasteaux Reefs)
Île Surprise introduced
invasive
Heine, Heino (1984) (p. 28)
Voucher cited: Blanchon 429
New Caledonia
Îles Loyauté (Loyalte Islands)
Île Walpole introduced
invasive
Heine, Heino (1984) (p. 28)
Vouhcer cited: Hmakone & Sam in MacKee 25862
New Caledonia
Îles Loyauté (Loyalte Islands)
Île Walpole native
Renevier, Alain/Cherrier, Jean-Francois (1991) (p. 16)
Voucher cited: Cherrier in MacKee 44069
New Caledonia
New Caledonia Archipelago
Île Grande Terre introduced
invasive
Heine, Heino (1984) (p. 28)
Vouchers cited: Balansa 544, MacKee 37083
New Caledonia
New Caledonia Archipelago
Île des Pins (Isle of Pines) introduced
invasive
Heine, Heino (1984) (p. 28)
Voucher cited: MacKee 13116
Niue
Niue
Niue Island native
Sykes, W. R. (1970) (p. 74)
As O. turpethum. Voucher cited: 169783.
Niue
Niue
Niue Island native
invasive
Whistler, W. A. (1988) (p. 15)
As O. turpethum
Niue
Niue
Niue Island uncertain if native
invasive
Space, James C./Waterhouse, Barbara M./Newfield, Melanie/Bull, Cate (2004) (p. 16)
Samoa
Western Samoa Islands
Upolu Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1989) (voucher ID: PTBG 3016)
Taxon name on voucher: Operculina ventricosa
Samoa
Western Samoa Islands
Upolu Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1989) (voucher ID: PTBG 3018)
Taxon name on voucher: Operculina ventricosa
Tonga
Ha‘apai Group
Ha‘ano Island introduced
invasive
Space, James C./Flynn, Tim (2001) (p. 73)
Tonga
Ha‘apai Group
Ha‘apai Islands introduced
Whistler, W. A. (1992) (p. 18)
Voucher cited: Whistler 6622
Tonga
Ha‘apai Group
Tofua Island introduced
Whistler, W. A. (1992) (p. 18)
Vouchers cited: Scarth-Johnson 30, Buelow 577
Tonga
Tongatapu Group
‘Eua Island introduced
invasive
Space, James C./Flynn, Tim (2001) (p. 61)
Tonga
Tongatapu Group
‘Eua Island   Drake, D. R./Whistler, W. A./Motley, T. J./Imada, C. T. (1996)
Tonga
Tongatapu Group
‘Eua Island introduced
Whistler, W. A. (1992) (p. 18)
Vouchers cited: Hotta 5473, Whistler 7190, Whistler 7196, Whistler 7398
Tonga
Tongatapu Group
Tongatapu Island introduced
Whistler, W. A. (1992) (p. 18)
Voucher cited: Soakai 576?
Tonga
Vava‘u Group
Niuafo‘ou Island introduced
Whistler, W. A. (1992) (p. 18)
Voucher cited: Whistler 6639?
Tonga
Vava‘u Group
Niuatoputapu Island introduced
Whistler, W. A. (1992) (p. 18)
Vouchers cited: Buelow 1083, Whistler 6189
Tonga
Vava‘u Group
Tafahi Island introduced
Whistler, W. A. (1992) (p. 18)
Voucher cited: Whistler 6235
Tonga
Vava‘u Group
Vava‘u Island introduced
Whistler, W. A. (1992) (p. 18)
Vouchers cited: Crosby 124, crosby 183, Buelow 855
Tonga
Vava‘u Group
Vava‘u Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2001) (voucher ID: PTBG 34292)
Taxon name on voucher: Operculina ventricosa (Bert.) Peter


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This page was created on 1 JAN 1999 and was last updated on 20 OCT 2006.