Pacific Island Ecosystems at Risk (PIER)

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Citrus nobilis
Loureiro, Rutaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

English: king orange, King-of-Siam, tangor

French: mandarinier king

Spanish: mandarina, tangor

Habit:  tree

Description:  "A small tree 4 to 5 or rarely to 6 meters high, the branches spreading or pendulous, the crown somewhat globose.  Leaves 11 cm long, with narrowly winged petiole.  Flowers...terminal, solitary or paired, 3.2 cm across, the stamens 20-27.  Fruit...compressed globose, about 9 cm across, the rind deep orange, rough, loose from the pulp, the segments 10 to 13, separating easily, medium sweet, slightly acid, the seeds about 10" (Walker, 1954; p. 140).

Habitat/ecology:  Widely cultivated.

Propagation:  Seed

Native range:  "Southern Japan to South China; known in cultivation only, but perhaps wild in the interior of China" (Walker, 1954; p. 140).


Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Ecuador (Galápagos Islands)
San Cristóbal Group
San Cristóbal Island introduced
Charles Darwin Foundation (2008)
French Polynesia
Society Islands
Tetiaroa Atoll introduced
Sachet, M.-H./Fosberg, F. R. (1983) (p. 64)
New Caledonia
New Caledonia Archipelago
Île Grande Terre introduced
MacKee, H. S. (1994) (p. 125)
Vouchers cited: Nothis 12 (NOU), MacKee 38195
Philippine Islands
Philippine Islands introduced
Merrill, Elmer D. (1923) (pp. 344-345)

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This page was created on 21 JUN 2004 and was last updated on 28 JUN 2009.