Triplaris weigeltiana (Reichb.) Kuntze, Polygonaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  High risk (based on second screen), score: 4 (Go to the risk assessment)

Other Latin names:  Blochmannia weigeltiana Rchb.; Triplaris surinamensis Cham.

Common name(s): [more details]

English: long jack, long john

Habit:  tree

Description:  "Trees to 5 m tall or more; leaves subsessile, the blades 10-22 cm long, 4-6 cm wide, acute apically, cuneate basally, entire, longitudinally lined, and with numerous pairs of prominent lateral veins; spikes 6-10 cm long, bearing numerous ovate to ovate-lanceolate, hirtellous bracts; pistillate perianth accrescent and enclosing the fruit, three of the sepals much enlarged, 2.8-3.2 cm long, 4-5 mm wide, suffused red purple, showy; achene ca 1 cm long (including the style), the styles red purple" (Welsh, 1998; p. 222).

Habitat/ecology:  In Tahiti, invading lowland mesic valleys.

Propagation:  Wind-dispersed seed.

Native range:  South America.

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	Meyer, Jean-Yves (2000) (p. 93) "Mesic/wet habitats"
French Polynesia Society Islands	Tahiti Island	introduced cultivated	Welsh, S. L. (1998) (p. 222) Voucher cited: BRY 26001
French Polynesia Society Islands	Tahiti Island	introduced invasive cultivated	Florence, J. (2004) (pp. 340-342)
French Polynesia Society Islands	Tahiti Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Voucher cited: J.-Y. Meyer 584bis (PAP) Naturalisée. Menace pour la biodiversité.
State of Hawaii Hawaiian Islands	O‘ahu Island	introduced cultivated	Imada, Clyde T./Staples, George W./Herbst, Derral R. (2013) (p. Voucher specimens) Vouchers cited: GAMcE s.n. (BISH 63779), Tong s.n. (BISH 63780), Lau 1809 (BISH 534027)
State of Hawaii Hawaiian Islands	O‘ahu Island	introduced invasive cultivated	Lau, Alex/Frohlich, Danielle (2012) (pp. 20-21) Voucher cited: OED 2009011203 (BISH)

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Singapore Singapore	Singapore (Republic of)	introduced abo. intro.	Chong, Kwek Yan/Tan, Hugh T. W./Corlett, Richard T. (2009) (p. 88) Cultivated only
South America (Pacific rim) South America (Pacific rim)	Colombia	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
South America (Pacific rim) South America (Pacific rim)	Ecuador (Republic of) (continental)	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)

Comments:  Listed as moderately invasive in French Polynesia (Meyer, 2000; p. 93).

Control:  If you know of control methods for Triplaris weigeltiana, please let us know.