You searched for invasive species named Acacia:    

1. Acacia concinna (tree)     

         Interim profile, incomplete information

Acacia concinna is a tree native to Asia. It is found in disturbed forests, in meadows and along rivers. Introduced to New Caledonia in the late 1980s, Acacia concinna has become locally invasive.

Common Names: soap pod

Synonyms: Acacia habbasoides Bojer, Acacia sinuata auct., Mimosa concinna Willd., Mimosa sinuata Lour

2. Acacia confusa (tree, shrub)   

Acacia confusa, a native of northern Philippines, has been introduced to many places throughout Asia and the Pacific. Being well suited to warm moist environments it has become invasive in many of the places of introduction, including Hawai‘i and the Northern Mariana Islands and shows potential to become invasive in others, including Micronesia and Palau. It would probably be wise not to introduce this species to islands where it is not already present.

Common Names: acacia petit feuille, boiffuring, boiffuring, formosa acacia, formosa koa, ianangi , ianángi, mimosa, pilampwoia, shoshigi, shoshigi, small Philippine acacia, soschghi, sosigi, sosigi, sosugi, sosugi, yanangi

Synonyms: Acacia richii auct. Non A. Gray, Racosperma confusum (Merr.) Pedley

3. Acacia farnesiana (tree, shrub)     

Probably a native of tropical America, Acacia farnesiana was introduced to many tropical countries for its bark, gum, seed and wood. It is often planted as an ornamental or to check erosion, and is also used in the perfume industry because of its scented flowers. This thorny, deciduous shrub grows to 4m in height forming impenetrable thickets or sometimes a more open cover and prefers dry habitats between sea level and 1000 m. In Australia it occurs along watercourses on rangeland and farmland limiting access to water. It has also become an invasive species in Fiji, French Polynesia, New Caledonia, Solomon Islands, and Vanuatu.

Common Names: acacia jaune, aroma, aroma, aromo, aweet acadia, ban baburi, carambuco, cashia, cassie, debena, Ellington curse, espino blanco, espino ruco, esponja, esponjeira, huisache, huisache dulce, kandaroma, kandaroma, klu, klu, klu bush, kolu, kolu, mimosa, mimosa bush, needle bush, oki, opoponax, popinac, popinac, rayo, Small's acacia, sweet acacia, tekaibakoa, titima, vaivai vakavotona, Westindische akazie

Synonyms: Acacia acicularis Humb. & Bonpl. ex Willd., Acacia densiflora (Alex. ex Small) Cory, Acacia edulis Humb. & Bonpl. ex Willd., Acacia farnesiana (L.) Willd.  var. pedunculata (Willd.) Kuntze, Acacia ferox M. Martens & Galeotti, Acacia indica (Pers.) Desv., Acacia lenticellata F.Muell., Acacia minuta (M.Jones) Beauchamp subsp. densiflora (Alex. ex Small) Beauchamp, Acacia pedunculata Willd., Acacia smallii Isely, Farnesia odora Gasp., Mimosa acicularis Poir., Mimosa farnesiana L., Mimosa acicularis (Humb. & Bonpl. ex Willd.) Poir., Mimosa edulis (Humb. & Bonpl. ex Willd.) Poir., Mimosa farnesiana L., Mimosa indica Pers., Mimosa pedunculata (Willd.) Poir., Vachellia densiflora Alex. ex Small, Vachellia farnesiana (L.) Wight & Arn., Vachellia farnesiana (L.) Wight & Arn. var. typica Speg., Vachellia farnesiana (L.) Wight & Arn. forma typica Speg.

4. Acacia mangium (tree)     

         Interim profile, incomplete information

Acacia mangium is a fast-growing tree that produces many seeds. Used for forestry and ecological restoration, it was widely planted and cultivated in many Pacific islands. It has naturalized in many cases and it is a threat to indigenous flora.

Common Names: black wattle

Synonyms: Acacia glaucescens sensu Kaneh. & Hatus., Acacia holosericea A. Cunn., Acacia holosericea G. Don var. glabrata auct. non Maiden, Acacia holosericea G. Don var. multispirea auct. non Domin, Acacia holosericea G. Don var. neurocarpa auct. non (Hook.) Domin, Mangium montanum Rumph., Racosperma mangium (Willd.) Pedley

5. Acacia mearnsii (tree, shrub)     

Acacia mearnsii is a fast growing leguminous (nitrogen fixing) tree. Native to Australia, it is often used as a commercial source of tannin or a source of fire wood for local communities. It threatens native habitats by competing with indigenous vegetation, replacing grass communities, reducing native biodiversity and increasing water loss from riparian zones.

Common Names: acácia-negra, Australian acacia, Australische akazie, black wattle, swartwattel, uwatela

Synonyms: A. decurrens var. mollis, Acacia mollissima

6. Acacia melanoxylon (tree)     

Acacia melanoxylon is native in eastern Australia. This tree grows fast and tall, up to 45m height. It has a wide ecological tolerance, occurring over an extensive range of soils and climatic conditions, but develops better in colder climates. Control of its invasion of natural vegetation, commercial timber plantations and farmland incurs considerable costs, but its timber value and nursing of natural forest succession provides a positive contribution.

Common Names: acacia à bois noir, acacia de madera negra, acacia rouge, acácia-preta, algarrobo, aroma salvaje, Australian blackwood, Australiese swarthout, blackwood, blackwood acacia, Tasmanian blackwood

Synonyms: Racosperma melanoxylon (R.Br.) C.Martius

7. Acacia nilotica (tree)     

         Interim profile, incomplete information

Acacia nilotica is a small tree 4 to 5 metres tall that was initially introduced to tropical areas for shading and forage. It forms dense stands that limit access to water for livestock, diminish the quality of pasture and compete with native plants. Acacia nilotica is regarded in Australia as a pest plant of national importance.

Common Names: acacia à gomme, gommier rouge, gum arabic tree, prickly acacia

Synonyms: Acacia arabica (Lam.) Willd., Mimosa nilotica L.

8. Albizia julibrissin (tree)   

Albizia julibrissin is commonly used as an ornamental tree because of its appealing fragrance, showy flowers and low maintenance requirement. It has escaped from the urban landscape and competes with native plants in disturbed habitats and occasionally in forested areas. Typical disturbed habitat may include roadsides, vacant lots and riparian areas. Albizia julibrissin prefers full sunlight but is salt and drought tolerant and can thrive in a wide range of soil types.

Common Names: mimosa, powderpuff tree, silk tree, silky acacia

9. Albizia lebbeck (tree)     

         Interim profile, incomplete information

Albizia lebbeck probably originated in tropical Asia and was introduced for forestry or erosion control in many countries. Fast-growing and reaching 18 to 30m in height, it is now naturalised mainly in dry tropical regions and can invade natural and semi-natural environments, as is the case in Mayotte and La Réunion.

Common Names: bois noir des bas, lebbek, raom tree, siris tree, soros-tree, woman's tongue, woman's-tongue tree

Synonyms: Acacia lebbeck (Linnaeus) Willd., Mimosa lebbeck L.

10. Dichrostachys cinerea (tree, shrub)     

Dichrostachys cinerea is a thorny, fast-growing woody bush or treelet which invades fields, wasteland, road sides and other disturbed areas. Originaly from from Africa, it has been introduced to the West Indies during the 19th century. Adult plants live a very long time, producing seeds which survive for a long time in the soil almost all year long. D. cinerea causes losses in agricultural production and its management involves frequent, heavy and expensive work.

Common Names: acacia Saint Domingue, el marabu, Kalahari-Weihnachtsbaum, kéké, mimosa clochette

11. Leucaena leucocephala (tree)     

Leucaena leucocephala is a 'conflict tree' being widely promoted for tropical forage production and reforestation, whilst at the same time it is spreading naturally and is widely reported as a weed. This thornless tree can form dense monospecific thickets and is difficult to eradicate once established. It renders extensive areas unusable and inaccessible and threatens native plants.

Common Names: acacia palida, aroma blanca, balori, bo chet, cassis, false koa, faux mimosa, faux-acacia, fua pepe, ganitnityuwan tangantan, graines de lin, guaje, guaslim, guaxin, huaxin, horse/wild tamarind, huaxin, ipil-ipil, jumbie bean, kan thin, kanthum thect, koa haole, koa-haole, kra thin, kratin, lamtoro, lead tree, leucaena, Leucaena, liliak, lino criollo, lopa samoa, lusina, nito, pepe, rohbohtin, schemu, siale mohemohe, subabul, tamarindo silvestre, tangantangan, tangan-tangan, te kaitetua, telentund, tuhngantuhngan, uaxim, vaivai, vaivai dina, vaivai ni vavalangi, wild mimosa, wild tamarind, zarcilla

Synonyms: Acacia leucocephala (Lamark) Link 1822, Leucaena glabrata Rose 1897, Leucaena glauca (L.) Benth. 1842, Mimosa leucocephala Lamark 1783

12. Prosopis spp. (tree, shrub)     

Members of the genus Prosopis spp., which are commonly known as mesquite or algarrobo, include at least 44 defined species and many hybrids. This leads to problems with identification. For this reason, information about different species in the Prosopis genus is presented in this genus-level profile. Native to the Americas, Prosopis species are fast growing, nitrogen fixing and very salt and drought tolerant shrubs or trees. Most are thorny, although thornless types are known. Animals eat the pods and may spread seeds widely. Trees develop a shrubby growth form if cut or grazed. The four main species that have presented problems as weeds world-wide are P. glandulosa and P. velutina in more subtropical regions and P. juliflora and P. pallida in the truly tropical zone.

Common Names: acacia de Catarina, aguijote negro, algaroba, algarobeira, algarobeira, algarroba, algarroba, algarrobo, algarrobo, algarrobo americano, algarrobo del Brasil, algarrobo forragero, anchipia guaiva, angrezi bavaliya , aroma, aroma americana, aromo, arómo, baron, bayahon, bayahon, bayahonda, bayahonda blanca, bayahonde, bayahonde, bayahonde française, bayarone, bayawonn, bayawonn française, belari jari, bohahunda, cambrón, campeche, caóbano gateado, carbón, carobier, cashaw, cashew, catzimec, chachaca, chambron, cojí wawalú, cuida, cují, cují amarillo, cují negro, cují yague, cují yaque, cujicarora , dakkar toubab , espinheiro, espino negro, espino real, espino ruco, eterai, gando baval , gaudi maaka, ghaf, guarango, guatapaná, huarango, indjoe, indju, kiawe, kuigi, lebi , maíz criollo, manca-caballo, mareño, mastuerzos, mathenge, mesquite, mesquite, mesquite, mesquite, mesquit-tree, Mexican thorn, mezquite, mezquite, mugun kawa, nacascol, nacasol, palo de campeche, plumo de oro, qui, screwbeans, shejain kawa , shouk shami, spinho, taco, thacco, tornillos, trupi, trupillo, uweif , vallahonda, velikaruvel, velimullu, vilayati babool, vilayati babul, vilayati babul, vilayati jand, vilayati khejra, vilayati kikar, vilayati kikar , wawahi, yaque, yaque blanco, yaque negro

13. Robinia pseudoacacia (tree)     

Robinia pseudoacacia is a leguminous deciduous tree native to the southeastern United States that has been widely introduced to other parts of North America. It is commonly found in disturbed areas such as old fields, degraded woods, forest edges, and roadsides, but it poses the greatest threat to dry and sand prairies and oak savannas. R. pseudoacacia has been planted on reclaimed land to control erosion and has been used for ornamental purposes. It reproduces vigorously by root suckering and stump sprouting to form groves of trees interconnected by a common root system.

Common Names: acacia blanc, black locust, false acacia, Post locust, robinia akacjowa, robinier, robinier faux acacia, robinier faux-acacia, yellow locust

Synonyms: Robinia pseudoacacia var. rectissima (L.) Raber