Corymbia citriodora (Hook.) K. D. Hill & L.A.S. Johnson, Myrtaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  High risk, score: 10 (Go to the risk assessment)

Other Latin names:  Eucalyptus citriodora Hook.

Common name(s): [more details]

English: citron-scent gum, lemon-scented gum, spotted gum

Habit:  tree

Description:  "Trees 25-40 m tall, bark white or sometimes pink, red or bluish gray, powdery, smooth throughout.  Adult leaves alternate, strongly lemon-scented, blades concolorous, lanceolate to narrowly lanceolate, 8-16 cm long, 0.5-2 cm wide, apex acuminate, petioles 13-20 mm long.  Flowers 3 in umbels arranged in terminal, compound inflorescences, peduncles 3-7 mm long, pedicels 1-6 mm long; buds clavate, 8-10 mm long, 4-5 mm wide; operculum hemispherical. Fruit ovoid to urceolate, often warty, 7-15 mm long, 7-11 mm wide, valves included" (Wagner et al., 1999; p. 952).

Habitat/ecology:  In Hawai‘i, widely planted and regenerating from seed in these areas (Wagner et al., 1999; p. 952).

Propagation:  Seed

Native range:  Southeastern Queensland, Australia (Wagner et al., 1999; p. 952).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
State of Hawaii Hawaiian Islands	Hawai‘i (Big) Island	introduced invasive cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 952)
State of Hawaii Hawaiian Islands	Kaua‘i Island	introduced invasive cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 952)
State of Hawaii Hawaiian Islands	Maui Island	introduced invasive cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 952)
State of Hawaii Hawaiian Islands	Moloka‘i Island	introduced invasive cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 952)
State of Hawaii Hawaiian Islands	O‘ahu Island	introduced invasive cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 952)

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia Australia (continental)	Queensland	native	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 952)

Indian Ocean
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Seychelles Seychelles Islands	Seychelles Islands	introduced	Invasive Species Specialist Group (2017)

Control:  If you know of control methods for Corymbia citriodora, please let us know.