Pacific Island Ecosystems at Risk (PIER)

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Oxalis barrelieri
L., Oxalidaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  High risk, score: 13 (Go to the risk assessment)

Other Latin names:  Oxalis bahiensis sensu auct. Micr. non Prog.

Common name(s): [more details]

English: barrelier's woodsorrel

French: oseille-marron, oseille-savane, trèfle

Pohnpeian: ansu

Samoan: vine, vine

Habit:  herb

Description:  "An erect herb 20-150 cm high; indument composed of whitish, eseptate hairs, sometimes sparse but apparent on stems, petioles, and lower surfaces of leaflet blades; leaves pinnately 3-foliolate, the petiole 1.5-3.5 cm long, continued into a rachis 5-10 mm long below terminal leaflet, the leaflet blades elliptic to oblong, up to 3.5 x 2.5 cm (terminal one the largest), obtuse or rounded at apex; petals (to 9 x 3.5 mm) pink except toward the greenish or yellowish base; capsules ovoid, 5-10 x 2-5 mm, 5-angled, with 2-4 seeds per locule" (Smith, 1985; pp. 624-625).

Habitat/ecology:  In Fiji, "an infrequent weed of roadsides and cultivated areas" (Smith, 1985; pp. 624-625).  In Samoa, "common in cultivated and disturbed places" (Whistler, 1988; p. 31).

Propagation:  Seed

Native range:  "Indigenous in the West Indies and Central and South America, ...introduced into parts of Africa, Ceylon, and Malesia; it has been noted as an occasional weed in the Caroline and Mariana Islands and Samoa..." (Smith, 1985; pp. 624-625).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
American Samoa
Manu‘a Islands
Ofu Island introduced
Ragone, Diane/Lorence, David H. (2003) (p. 52)
American Samoa
Manu‘a Islands
Ofu Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1999) (voucher ID: PTBG 264)
Taxon name on voucher: Oxalis barrelieri
American Samoa
Manu‘a Islands
Ofu Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2001) (voucher ID: PTBG 35368)
Taxon name on voucher: Oxalis barrelieri L.
American Samoa
Manu‘a Islands
Ta‘u Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1990) (voucher ID: PTBG 9132)
Taxon name on voucher: Oxalis barrelieri
American Samoa
Tutuila Islands
Tutuila Island   Swarbrick, John T. (1997) (p. 95)
American Samoa
Tutuila Islands
Tutuila Island   Anon. (1988) (p. 2)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Tinian Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 121)
Federated States of Micronesia
Chuuk Islands
Chuuk Islands   Swarbrick, John T. (1997) (p. 95)
Federated States of Micronesia
Kosrae Island
Kosrae Island introduced
invasive
Lorence, David H./Flynn, Timothy (2010) (p. 21)
Naturalized
Federated States of Micronesia
Kosrae Island
Kosrae Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1996) (voucher ID: PTBG 24930)
Taxon name on voucher: Oxalis barrelieri L.
Federated States of Micronesia
Pohnpei Islands
Pohnpei Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 121)
Federated States of Micronesia
Pohnpei Islands
Pohnpei Island introduced
Glassman, S. F. (1952) (p. 57)
Vouchers cited: Glassman 2429 (US), Glassman 2839 (US)
Federated States of Micronesia
Pohnpei Islands
Pohnpei Island introduced
invasive
Herrera, Katherine/Lorence, David H./Flynn, Timothy/Balick, Michael J. (2010) (p. 119)
Vouchers cited: F.R. Fosberg 60440 (BISH), F.R. Fosberg 58439 (BISH), S.F. Glassman 2439 (BISH), S.F. Glassman 2429 (BISH), K. Nagata 1487 (BISH), S. Perlman 21394 (PTBG), P. Raynor 164 (NY, PTBG), M.-H. Sachet 1834 (BISH)
Naturalized
Federated States of Micronesia
Pohnpei Islands
Pohnpei Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2003) (voucher ID: PTBG 43876)
Taxon name on voucher: Oxalis barrelieri
Federated States of Micronesia
Yap Islands
Yap (Waqab) Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 121)
Fiji
Fiji Islands
Viti Levu Island introduced
invasive
Smith, Albert C. (1985) (pp. 624-625)
Voucher cited: DA L.11758
Fiji
Fiji Islands
Viti Levu Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1988) (voucher ID: PTBG 32548)
Taxon name on voucher: Oxalis barrelieri
Fiji
Fiji Islands
Viti Levu Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1988) (voucher ID: PTBG 32549)
Taxon name on voucher: Oxalis barrelieri
French Polynesia
Society Islands
Tahiti Island introduced
invasive
Welsh, S. L. (1998) (p. 211)
Voucher cited: Florence 2443
French Polynesia
Society Islands
Tahiti Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Voucher cited: J. Florence 2443 (PAP)
Adventice
Palau
Palau (Belau ) (main island group)
Babeldaob Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 121)
Palau
Palau (Belau ) (main island group)
Babeldaob Island introduced
invasive
Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 102)
Palau
Palau (Belau ) (main island group)
Babeldaob Island   Beleu National Museum (Republic of Palau. Koror.) (1966) (voucher ID: BNM 597)
Taxon name on voucher: Oxalis barrelieri L.
Palau
Palau (Belau ) (main island group)
Kayangel (Ngcheangel) Island   Wagner, W. L./ Herbst, D. R./Weitzman, A./Lorence, D.H. (2013)
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 121)
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island introduced
invasive
Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 98)
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island   Beleu National Museum (Republic of Palau. Koror.) (1966) (voucher ID: BNM 1318)
Taxon name on voucher: Oxalis barrelieri L.
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island   Beleu National Museum (Republic of Palau. Koror.) (1966) (voucher ID: BNM 596)
Taxon name on voucher: Oxalis barrelieri L.
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island   Beleu National Museum (Republic of Palau. Koror.) (1966) (voucher ID: BNM 1317)
Taxon name on voucher: Oxalis barrelieri L.
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island   Beleu National Museum (Republic of Palau. Koror.) (1969) (voucher ID: BNM 595)
Taxon name on voucher: Oxalis barrelieri L.
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1966) (voucher ID: PTBG 23514)
Taxon name on voucher: Oxalis barrelieri
Palau
Palau (Belau ) (main island group)
Malakal (Ngemelachel) Island introduced
invasive
Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 98)
Palau
Palau (Belau ) (main island group)
Malakal (Ngemelachel) Island introduced
invasive
Space, James C./Lorence, David H./LaRosa, Anne Marie (2009) (p. 64)
Voucher: Lorence 9712 (PTBG, BNM, NY, US)
Palau
Palau (Belau ) (main island group)
Malakal (Ngemelachel) Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2008) (voucher ID: PTBG 5)
Taxon name on voucher: Oxalis barrelieri L.
Palau
Palau (Belau ) (main island group)
Ngerkebesang Island introduced
invasive
Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 98)
Samoa
Western Samoa Islands
Upolu Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2002) (voucher ID: PTBG 313)
Taxon name on voucher: Oxalis barrelieri
Samoa
Western Samoa Islands
Western Samoa Islands   Whistler, W. A. (1988) (p. 31)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Colombia
Colombia
Colombia (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Costa Rica
Costa Rica
Costa Rica (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Ecuador (Mainland)
Ecuador
Ecuador (Republic of) (continental) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Indonesia
Indonesia
Indonesia (Republic of)   Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 259)
Mexico
Mexico
Mexico (United Mexican States) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Nicaragua
Nicaragua
Nicaragua (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Panama
Panama
Panama (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Perú
Perú
Perú (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Singapore
Singapore
Singapore (Republic of) introduced
invasive
Chong, Kwek Yan/Tan, Hugh T. W./Corlett, Richard T. (2009) (p. 65)
Naturalised
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
cultivated
Swarbrick, J. T. (1997) (p. 122)


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This page was created on 18 AUG 2002 and was last updated on 14 DEC 2012.