Eucalyptus robusta Sm., Myrtaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  Low risk (based on second screen), score: 3 (Go to the risk assessment)

Other Latin names:  Eucalyptus multiflora Poir.

Common name(s): [more details]

Chinese: an

English: robust eucalyptus, swamp mahogany, swamp messmate, swamp stringybark

Habit:  tree

Description:  "Trees 20-30 m tall, bark reddish brown, rough, soft, spongy throughout.  Adult leaves alternate, blades discolorous, broadly lanceolate, 10-16 cm long, 2.7-4.5 cm wide, apex acuminate, petioles 20-35 mm long.  Flowers 9-15 in axillary, simple umbels, peduncles broadly flattened, 13-30 mm long, pedicels 1-9 mm long; buds rostrate or fusiform, 16-19 mm long, 6-8 mm wide; operculum conical, rostrate.  Fruit cylindrical, 10-18 mm long, 6-11 mm wide, valves 3-4, included and coherent across orifice"  (Wagner et al., 1999; p. 957).

Habitat/ecology:  In Hawai‘i, "planted, often as windbreaks...and regenerating from seed in and near these areas" (Wagner et al., 1999; p. 957).

Propagation:  Seed

Native range:  "Native to coastal areas of southeastern Queensland to southern coast of New South Wales, Australia" (Wagner et al., 1999; p. 957).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Federated States of Micronesia Pohnpei Islands	Pohnpei Island	introduced cultivated	Herrera, Katherine/Lorence, David H./Flynn, Timothy/Balick, Michael J. (2010) (p. 116)
Federated States of Micronesia Yap Islands	Yap (Waqab) Island		Wagner, W. L./ Herbst, D. R./Weitzman, A./Lorence, D.H. (2013)
French Polynesia Society Islands	Raiatea (Havai) Island		Fosberg, F. R. (1997) (p. 81)
French Polynesia Society Islands	Tahiti Island	introduced cultivated	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Cultivée
Guam Guam Island	Guam Island		Wagner, W. L./ Herbst, D. R./Weitzman, A./Lorence, D.H. (2013)
State of Hawaii Hawaiian Islands	Hawai‘i (Big) Island	introduced invasive cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 957)
State of Hawaii Hawaiian Islands	Kaua‘i Island	introduced invasive cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 957)
State of Hawaii Hawaiian Islands	Lāna‘i Island	introduced cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 957) Voucher cited: Munro 501 (BISH)
State of Hawaii Hawaiian Islands	Lāna‘i Island	introduced invasive cultivated	Oppenheimer, Hank (2007) (p. 28) Voucher cited: Oppenheimer & K.R. Wood H80621 (BISH, PTBG) Naturalized in most locations where previously planted.
State of Hawaii Hawaiian Islands	Maui Island	introduced invasive cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 957)
State of Hawaii Hawaiian Islands	Moloka‘i Island	introduced invasive cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 957)
State of Hawaii Hawaiian Islands	O‘ahu Island	introduced invasive cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 957)
New Caledonia New Caledonia Archipelago	Île Grande Terre	introduced cultivated	MacKee, H. S. (1994) (p. 105) Vouchers cited: Veillon 1212, MacKee 40276

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)	New South Wales	native	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 957)
Australia Australia (continental)	Queensland	native	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 957)
China China	China (People's Republic of)	introduced cultivated	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013) Cultivated in Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hunan, Jiangxi, Sichuan, Yunnan, and Zhejiang.
China China	Hong Kong	introduced cultivated	Wu, Te-lin (2001) (p. 162)
Singapore Singapore	Singapore (Republic of)	introduced cultivated	Chong, Kwek Yan/Tan, Hugh T. W./Corlett, Richard T. (2009) (p. 40) Cultivated only
Taiwan Taiwan Island	Taiwan Island	introduced cultivated	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)

Indian Ocean
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
La Réunion (France) La Réunion Island	La Réunion Island	introduced invasive	Kueffer, C./Lavergne, C. (2004) (p. 5)
Seychelles Seychelles Islands	Seychelles Islands	introduced	Invasive Species Specialist Group (2017)

Also reported from
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
United States (continental except west coast) United States (other states)	USA (Florida)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)

Control:  If you know of control methods for Eucalyptus robusta, please let us know.