Present on Pacific Islands?  yes

Threat only at high elevations?  no

Common name(s): [more details]

Chamorro: lanson

English: langsat

French: langsep, lansium

Spanish: árbol de lanza, lanzón, lanzones

Habit:  tree

Description:  "A middle-sized tree, leaves 1-pinnate, 20-40 cm long, with 5-7 alternate leaflets; leaflets entire, oblong-elliptic, acute, 7-18 cm long, with veins prominent beneath; flowers in small spikes on branches and trunks, yellowish, small, sessile; fruit subglobose or ovoid, 3-4 cm long, the calyx persistent at the base, skin velvety; pulp translucent, acid, edible; seeds 1 or 2, with 2-4 abortive ovules; separable into 2-5 segments, juicy."  (Stone, 1970; p. 357).

Habitat/ecology:  (no habitat/ecology info known by PIER)

Propagation:  Seed

Native range:  Indomalaysian (Stone, 1970; p. 357).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Ecuador (Galápagos Islands) Santa Cruz Group	Santa Cruz Island	introduced cultivated	Charles Darwin Research Station (2005)
Federated States of Micronesia Pohnpei Islands	Pohnpei Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 128)
Guam Guam Island	Guam Island	introduced cultivated	Stone, Benjamin C. (1970) (p. 357) Present status unknown.
Guam Guam Island	Guam Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 128)
Palau Palau (main island group)	Palau Islands (main island group)	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 128)
Philippines Philippine Islands	Philippine Islands	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Indonesia Indonesia	Indonesia (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Malaysia Malaysia	Malaysia (country of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Thailand Thailand	Thailand (Kingdom of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)

Comments:  Reported as possibly an invasive plant in the Galápagos Islands per Charles Darwin Research Station.

Additional information:  Morton, J. 1987. Langsat. p. 201-203. In: Fruits of warm climates. Julia F. Morton, Miami, FL.
Information from the World Agroforestry Centre's AgroForestryTree Database.

Additional online information about Lansium domesticum is available from the Hawaiian Ecosystems at Risk project (HEAR).

Taxonomic information about Lansium domesticum may be available from the Germplasm Resources Information Network (GRIN).

References:

Charles Darwin Research Station. 2005. CDRS Herbarium records.

Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce. 1979. A geographical checklist of the Micronesian dicotyledonae. Micronesica 15:1-295.

Stone, Benjamin C. 1970. The flora of Guam. Micronesica 6:1-659.

U.S. Dept. Agr., Agr. Res. Serv. 2007. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.