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

Click on an image for links to BIGGER PICTURES

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)

Additional information:
Information from the World Agroforestry Centre's AgroForestryTree Database.

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

Information about Corymbia citriodora as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

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

References:

U.S. Dept. Agr., Agr. Res. Serv. 2011. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.

Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. 1999. Manual of the flowering plants of Hawaii. Revised edition. Bernice P. Bishop Museum special publication. University of Hawai‘i Press/Bishop Museum Press, Honolulu. 1919 pp. (two volumes).