Eucalyptus grandis Hill ex Maiden, Myrtaceae

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Present on Pacific Islands?  no

Primarily a threat at high elevations?  no

Risk assessment results: 

High risk, score: 11 (Go to the risk assessment (Pacific)).
Reject, score: 8 (Go to the risk assessment (U.S.)).
Reject, score: 7 (Go to the risk assessment (U.S. (Florida))).

Common name(s): [more details]

Chinese: da an

English: flooded gum, grand eucalyptus, rose gum

Habit:  tree

Description:  "Tree to 55 m.  Bark smooth, white, grey-white or blue-grey, with some rough flaky bark at base up to 4 m.  Juvenile leaves ovate.  Adult leaves lanceolate; lamina 10-16 cm long, 2-3 cm wide; lateral veins conspicuous, at 40º-55º; intramarginal vein up to 1 mm from margin; petiole 15-20 mm long.  Umbels 7-11-flowered; peduncle flattened, 8-18 mm long; pedicels angular, absent or to 3 mm long. Buds ovoid or broadly fusiform; operculum conical or slightly rostrate, 3-4 mm long, 4-5 mm wide; hypanthium obconical or campanulate, 3-4 mm long, 4-5 mm wide.  Fruits subpyriform, 5-8 mm long, 4-7 mm wide; disc narrow, level or descending; valves 4 or 5, exserted, incurved"  (George, 1980; pp. 198-199).

Habitat/ecology:  In Australia, "grows usually on lower slopes and flats of valleys, in tall open forest, often on the fringes of or in rainforest" (George, 1980; pp. 198-199).

Propagation:  Seed

Native range:  New South Wales and Queensland, Australia (George, 1980; pp. 198-199).

Presence:

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	U.S. Dept. Agr., Agr. Res. Serv. (2011)
China China	China (People's Republic of)	introduced cultivated	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2011) Cultivated in Guangdong and Guangxi.
Taiwan Taiwan	Taiwan Island	introduced cultivated	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2011)

Additional information:
Fact sheet from U.S. Forest Service silvics manual.
Fact sheet from "Common forest trees of Hawaii" (PDF format).
Fact sheet from Florabank.

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

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

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

References:

George, A. S., ed. 1980. Flora of Australia. Vol. 19, Myrtaceae-Eucalyptus, Angophora. Australian Government Publishing Service, Canberra.

Little, Elbert L./Skolmen, Roger G. 1989. Common forest trees of Hawaii (native and introduced). USDA Agriculture Handbook 679. Washington, D.C. 377 pp. + plates.

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

U.S. Dept. Agr., Nat. Res. Cons. Serv. 2011. The PLANTS Database. National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

Zhengyi, Wu/Raven, Peter H./Deyuan, Hong. 2011. Flora of China (online resource).