Invasives

Page 7 of 8, Total records 723

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Species Description Photo
Scinax x-signatus Scinax x-signatus is a frog species originating from the forests of South America. It occurs in low altitude moist forests, moist savannas, wetlands, pastures, gardens and highly degraded habitats. Si ...
Sciurus carolinensis (eastern gray squirrel) The grey squirrel (Sciurus carolinensis) is native to deciduous forests in the USA and has been introduced to the UK, Ireland, Italy and South Africa. In the introduced range grey squirrels dam ...
Scolopendra morsitans (Common centipede) The millipede Scolopendra morsitans is believed to be at least partly responsible for the decline of the 'Critically Endangered (CR)' St Helena giant earwig (see
Scyphophorus acupunctatus Scyphophorus acupunctatus is becoming a major pest of native Agavaceae and Dracaenaceae species worldwide. Native to Mexico, it has decimated populations of Agave crops there, in particular sp ...
Sechium edule (chayote) Sechium edule is a perennial from the Cucurbitaceae family. It is cultivated in the tropics for its fruit which are edible when ripe. The plant has climbing stems several metres in length. It can esca ...
Securigera varia (Axseed) Coronilla varia is a perennial herb with creeping stems that may reach 0.6 - 2 metres. It is tolerant of drought, heavy precipitation, and cold temperatures, but it is intolerant of shade.
Senecio angulatus (Creeping groundsel) Creeping groudsel, Senecio angulatus is a prolific vine that has the ability to form thickets of more than 20 mteres that can cover and smother native flora. Native to South Africa it has been introdu ...
Senecio inaequidens Senecio (Asteraceae) contains circa 1500 species worldwide of which 133 are considered weeds. Senecio inaequidens is a dominant invasive species throughout western Europe and is one of the most ...
Senecio squalidus (Oxford Ragwort) Oxford ragwort Senecio squalidus is a short-lived perennial herb derived from plant material introduced to Britain from Mount Etna (Sicily) at the beginning of the eighteenth century. It appear ...
Senecio viscosus (Sticky Groundsel) Sticky groundsel, Senecio viscosus is considered a weed of wasteland, disturbed sites, especially open sandy or gravelly places. It is called sticky groundsel because of its numerous sticky ha ...
Senecio vulgaris (Groundsel) Common groundsel, Senecio vulgaris adapts readily to new environments, it has spread throughout temperate regions. Common groundsel is a weed of disturbed grounds, such as cultivated fields; it is a w ...
Sesbania punicea (rattlebox) Commonly known as Brazilian rattlebox, Sesbania punicea is a deciduous, leguminous shrub that has been widely distributed from its native South American range as an attractive ornamental specie ...
Setaria verticillata (rough bristle grass) Setaria verticillata is a native European grass, invading agricultural, urban, and other disturbed areas throughout North America, Central America, South America Africa, Asia, and the North and ...
Sirococcus clavigignenti-juglandacearum Sirococcus clavigignenti-juglandacearum is the cause of butternut canker, which is a lethal stem disease. It causes multiple cankers on the main stem, branches and twigs of butternut, Juglans cinerea. ...
Solanum seaforthianum (paraiso) Solanum seaforthianum is considered a weed in the tropics. It is common in disturbed environments and can form dense, impenetrable stands. Solanum seaforthianum is regarded as a serious threat to the ...
Solanum sisymbriifolium (Sticky Nightshade) Solanum sisymbriifolium is a viscid, hairy herb native to South America that is currently distributed throughout the world. It is valued for its many uses, which include its use as a trap crop for po ...
Solanum tampicense (Huevo de gato) Solanum tampicense is a member of the same genus as the tomato and is native to parts of the Caribbean, Mexico and Central America. In the United States, this shrub has invaded Florida, where ...
Solanum torvum (Turkey Berry) Solanum torvum is considered a weed in the tropics. Often found in disturbed areas, it can form dense impenetrable stands. Solanum torvum is considered to be a serious threat to the productivity and s ...
Solanum viarum (João bravo) Solanum viarum is an aggressive perennial shrub native to Brazil and Argentina, that has been introduced to other parts of South America, North America, Africa and Asia. The primary means of dispers ...
Solenopsis geminata (fire ant) Solenopsis geminata has spread almost world-wide by human commerce. It usually invades open areas but can easily colonise human infrastructure and agricultural systems, such as coffee and sugarcane pl ...
Solenopsis invicta (Fire ant) Solenopsis invicta is an aggressive generalist forager ant that occurs in high densities and can thus dominate most potential food sources. They breed and spread rapidly and, if disturbed, can relocat ...
Solenopsis papuana Solenopsis papuana is a native ant of the Pacific region that thrives in the company of other more major invasive ants, but is not a major pest species on its own. It has been introduced to Hawaii an ...
Solenopsis richteri (black imported fire ant) Solenopsis richteri, commonly known as the black imported fire ant, is native to South America. It builds large mounds that can reach 46cm in height. Solenopsis richteri damages crops, impedes recreat ...
Solidago canadensis (Canada goldenrod) Solidago canadensis is native to North America and was first reported from Europe in 1645 and in China around 1930. Today Solidago canadensis is widespread and invasive all over Europe and increasingl ...
Sorghum halepense (aleppo milletgrass) Sorghum halepense is an extremely invasive noxious weed with a worldwide distribution. High seed production and an extensive rhizomal system makes it difficult to eradicate. This species has a number ...
Spartina alterniflora (saltmarsh cordgrass) Spartina alterniflora commonly known as smooth cord grass is a species that inhabits marsh habitat in its native range, where introduced It is known to establish itself in wave-protected mud an ...
Spartina anglica (common cordgrass) Spartina anglica is a perennial salt marsh grass which has been planted widely to stablize tidal mud flats. Its invasion and spread leads to the exclusion of native plant species and the reduction of ...
Spartina densiflora (denseflower cordgrass) Spartina densiflora is an invasive cordgrass that primarily inhabits marsh and wetland environments. It is an extremely aggressive species that is capable of outcompeting native plants in their local ...
Sparus aurata (Silver seabream) Gilthead bream (Sparus aurata) is a fish of Mediterranean and Atlantic Ocean origin. It is one of the most important fish in the aquaculture industry in the Mediterranean. However the rapid dev ...
Spathodea campanulata (rarningobchey) The African tulip tree (Spathodea campanulata) is an evergreen tree native to West Africa. It has been introduced throughout the tropics, and, has naturalised in many parts of the Pacific. It favours ...
Spermacoce verticillata (shrubby false buttonweed) Spermacoce verticillata is described as a "plant threat to Pacific ecosystems". ...
Sphagneticola trilobata (Bay Biscayne Creeping-oxeye) Although Sphagneticola trilobata is the accepted name for this species, it is widely known as Wedelia trilobata. Sphagneticola trilobata is native to the tropics of Central America and has naturalised ...
Sporobolus africanus (rat-tail grass) The rat-tail grass Sporobolus indicus is a tuft forming perrenial grass native to various countries in continental Africa and often introduced as a pasture grass. It is capable of forming dens ...
Stellaria alsine (trailing stitchwort) Introduced to the Kerguelen Islands, Stellaria alsine is still restricted to a small area on the outskirts of the scientific research base. However, it is the most aggressive introduced plant and it f ...
Stellaria media (chickweed) Stellaria media is an extremely widespread herbaceous annual plant. It is a weed of meadows, gardens and abandoned land. In Europe and North America, it is considered to be an invasive plant. Control ...
Stipa neesiana (Chilean needle grass) Nassella neesiana (Chilean needle grass) threatens the ecological integrity of affected natural ecosystems and also causes significant devastation in agricultural areas due to the reduction in pasture ...
Stipa tenuissima (Mexican feather grass) Nassella tenuissima )commonly known as Mexican feather grass) can be a weed in its native range at sites under high disturbance, such as that caused by overgrazing. It forms indigestible balls in the ...
Streptopelia decaocto (Eurasian Collared-Dove) The Eurasian collared-dove (Streptopelia decaocto) is an extremely successful invader capable of phenomenal range expansion despite geographic barriers. In Europe, it spread from Turkey and the ...
Striga asiatica (Asiatic witchweed) Striga asiatica is an annual parasitic weed of agricultural crops. It has a gigantic impact on human welfare by affecting subsistence farmers and consequently aggravates hunger and poverty. Striga as ...
Sturnus vulgaris (European Starling) Native to Europe, Asia and North Africa, Sturnus vulgaris (the European starling) has been introduced globally, save in neotropic regions. The starling prefers lowland habitats and is an aggressive o ...
Styela clava (Round sea squirt) Styela clava is a fouling organism native to the Pacific Coast of Asia. Because of its hardy nature and ability to withstand salinity and temperature fluctuations, Styela clava easily establishes whe ...
Styela plicata (Striped sea squirt) Styela plicata (sea squirt) is a pandemic, temperate to subtropical tunicate. As a pest species, Styela plicata outcompete native encrusters and excludes them from hard substrates. It is a known fou ...
Suncus murinus (Asian House Shrew) Suncus murinus (the Indian musk shrew) is a commensal and adaptable mammal. It is a rapid coloniser and threatens many plant and animal species through predation and competition. Through human agency ...
Sus scrofa (wild boar) Sus scrofa (feral pigs) are escaped or released domestic animals which have been introduced to many parts of the world. They damage crops, stock and property, and transmit many diseases such as ...
Syngonium podophyllum (American evergreen) Syngonium podophyllum is an ornamental vine native to Central and parts of South America that has established invasive populations in the United States, South Africa, Singapore, the Carribbean, ...
Syzygium cumini (Jambul) Syzygium cumini has been introduced to many different places where it has been utilised as a fruit producer, as an ornamental and also for its timber. It has the ability to form a dense cover, excludi ...
Syzygium floribundum A native of Australia, Waterhousea floribunda grows up to 30 metres in height and has attractive weeping branches, which are used for shade and shelter. This tree has been introduced into French Polyn ...
Syzygium jambos (Malabar Plum) Syzygium jambos, commonly known as the Malabar plum, is indigenous to the Malay Archipelago. It is a small tree (10 - 15 m), and was primarily introduced into new areas as an ornamental and as ...
Tabebuia heterophylla (white cedar) Tabebuia heterophylla is a small to medium sized deciduous tree attaining a height of 18m. In its native range it is widespread in abandoned pastures and secondary forests. It has become a problem in ...
Tamarix aphylla (saltcedar) The athel pine, Tamarix aphylla (L.) Karst., is native to Africa and tropical and temperate Asia. It is an evergreen tree that grows to 15 m, and has been introduced around the world, mainly as ...
Tamarix parviflora (saltcedar) The smallflower tamarisk, Tamarix parviflora DC., is a semideciduous small tree or shrub that is native to Israel, Turkey and southeastern Europe. Seedlings of T. parviflora develop read ...
Tamarix ramosissima (salt-cedar) Tamarix ramosissima is a rampantly invasive shrub that has dominated riparian zones of arid climates. A massive invasion of T. ramosissmia in the western United States has dominated over ...
Tapinoma melanocephalum (Ghost ant) Tapinoma melanocephalum is known as a tramp ant as its spread around the globe has been assisted by human activities. It is highly flexible in the habitats it occupies, providing there is some form of ...
Taraxacum campylodes (Dandelion) Taraxacum officinale is one of the most wide-spread weeds of North America, Asia and Europe. On French sub-Antarctic islands, where Taraxacum officinale has been introduced, the disappearance of nativ ...
Technomyrmex albipes (White-footed house ant) Native to the Indo-Pacific area, Technomyrmex albipes, commonly known as the white-footed ant, has spread to Australia, Africa, North America, Caribbean and Asia. Technomyrmex albipes are often found ...
Tecoma capensis (cape honeysuckle) Tecoma capensis consists of two subspecies within its native range; Tecoma capensis subsp. capensis which is found in South Africa, Swaziland and Mozambique, and Tecoma capensi ...
Tecoma stans (trumpetbush) Tecoma stans is a South American tree which has been introduced to other tropical and subtropical regions (Indian Ocean, Pacific, Australia) as an ornamental. Tecoma stans prefers dry and disturbed ar ...
Terminalia catappa (india almond) Terminalia catappa is a native plant of Asia that has escaped from cultivation. Due to its ability to cope with sandy, well draining soil, and salt spray it is often found on coastal regions. ...
Tetropium fuscum (brown spruce longhorn beetle) Tetropium fuscum (the brown spruce longhorn beetle) is a high risk invasive species native to Europe and Asia that has been introduced to Nova Scotia, Canada where it has ravaged red spruce (Picea rub ...
Thaumetopoea pityocampa (Pine Processionary) Tilapia mariae, or spotted tilapia, is a cichlid native to coastal lagoons in western equatorial Africa that has established populations in Australia and United States. Due to its high fecundity, aggr ...
Thevetia peruviana (luckynut) Yellow oleander, Thevetia peruviana is a bushy shrub native to tropical America. Seedlings can be found on cultivated ground and ex-pasture land. It is cultivated in gardens as an ornamental where it ...
Thunbergia grandiflora (Bengal trumpet) Thunbergia grandiflora is a climbing vine native to Asia which is able to smother native vegetation. Introduced and cultivated in many regions as an ornamental, it has become a widespread invasive pla ...
Tibouchina urvilleana (princessflower) Tibouchina urvilleana is grown in many regions for its beautiful flowers. In Hawaii and La Réunion it is invasive and forms dense stands, smothering native species. ...
Tilapia mariae (Black mangrove cichlid) Tilapia mariae, or spotted tilapia, is a cichlid native to coastal lagoons in western equatorial Africa that has established populations in Australia and United States. Due to its high fecundity, aggr ...
Tilapia zillii (Zilli's tilapia) In its native, tropical range, Tilapia zillii is important as a food fish as well as for aquaculture. Tilapia zillii provided 70% of Egypt's fish production, however outside its native range, this fr ...
Tinca tinca (Tench) Tench (Tinca tinca) are a widespread species of freshwater fish native to temperate Europe and Asia. Popular as an angling species, they have been introduced to a number of countries as a sport fish. ...
Tithonia diversifolia (tree marigold) Tithonia diversifolia is an herbaceous stoloniferous perennial which can reach 2 to 3m high. Originally from Mexico and Central America, it is planted and cultivated in many countries for its beautifu ...
Tomicus piniperda (common pine shoot beetle) The international movement of non-native forest insects is a threat to forest sustainability worldwide. Tomicus species (Coleoptera, Scolytidae) are important pests of pine forest in Eurasia, Europe a ...
Toumeyella parvicornis (pine tortoise scale) The Pine tortoise scale, Toumeyella parvicornis native to Eastern United States and Southern Canda, was reported for the first time on Middle Caicos, Turks and Caicos islands in 2005 infesting ...
Trachemys scripta elegans (Red-eared slider) The red-eared slider (Trachemys scripta elegans) has been the most popular turtle in the pet trade with more than 52 million individuals exported from the United States to fore ...
Trachycarpus fortunei (Chusan Palm) Trachycarpus fortunei, commonly known as the Chinese windmill palm, is an evergreen palm that is primarily cultivated for ornamental purposes. Recognisable by its large, fan-shaped leaves, it can grow ...
Tradescantia fluminensis (small-leaf spiderwort) Tradescantia fluminensis is endemic to the tropical rainforests of south east Brazil and has naturalised in New Zealand, south-eastern Australia, Portugal, Italy, Russia, Japan and the south-eastern U ...
Tradescantia spathacea (Moses-in-the-Cradle) Tradescantia spathacea is a beautiful succulent that has been introduced to south Asia and many Pacific Islands from its native range in the tropical Americas. Although it has not yet been declared a ...
Trapa natans (Bull nut) Trapa natans, commomly known as water chestnut, is an annual plant introduced from Asia and has become abundant in the northeastern United States where it creates a nuisance in lakes, ponds, canals an ...
Triadica sebifera (Chinese tallow) Triadica sebifera is a tree in the Euphorbiaceae family which typically reaches a maximum height of 15m at maturity. It is adapted to a variety of disturbed sites and a wide range of soil conditions. ...
Trichosurus vulpecula (Common Brushtail) The brushtail possum (Trichosurus vulpecula) is a solitary, nocturnal, arboreal marsupial introduced from Australia. It damages native forests in New Zealand by selective feeding on foliage and fruits ...
Tridentiger trigonocephalus (Striped tripletooth goby) Treidentiger trigonocephalus (the chameleon goby) is a native fish of Asia which is spread through ship ballast water or via eggs laid on hulls. It has established in California and Australia where i ...
Trididemnum solidum The colonial ascidia Trididemnum solidum is present throughout the West Indies to Florida, the Bahamas to Venezuela. T. solidum grow as mat like sheets that can grow over coral, sponges and macroalgae ...
Trifolium dubium (hop clover) Trifolium dubium is an annual legume that naturally occurs over most of Europe. T. dubium prefers higher altitude biomes, such as the areas it is found in both Australia and New Zealand ...
Trifolium repens (Ladino Clover) Trifolium repens is a perennial legume that originated in Europe/East Asia and has become one of the most widely distributed legumes in the world. It has naturalized in most of North America, ...
Triphasia trifolia (lime berry) Triphasia trifolia is a shrub that can grow up to 3 metres high. It has been introduced to many tropical and subtropical regions of the world where it is grown for its fruit. It is naturalised in many ...
Trogoderma granarium (Khapra beetle) Trogoderma granarium are considered a pest of considerable impact to stored foodstuffs. It maintains its presence in food storage in very low numbers and is able to survive long periods of time in an ...
Tubastraea coccinea (Orange cup coral) Tubastraea coccinea (orange-cup coral) has been introduced to all continents except Antarctica and is thought to compete with native benthic invertebrates for space and to compromise their communities ...
Tussilago farfara (Coltsfoot) Tussilago farfara is a perennial herb which spreads mainly through underground rhizomes. During the summer, food is stored in the rhizomes for the following year's early spring growth. Tussilago farfa ...
Typha latifolia (Reedmace) Typha latifolia (cattails) are among the most common of all aquatic plants. They are often a nuisance but also perform an important function in keeping a lake healthy by filtering the runoffs. Typha l ...
Ulex europaeus (common gorse) Ulex europaeus is a spiny, perennial, evergreen shrub that grows in dense and impenetrable thickets which exclude grazing animals. It is common in disturbed areas, grasslands, shrublands, forest margi ...
Undaria pinnatifida (Apron-ribbon vegetable) The kelp (Undaria pinnatifida) is native to Japan where it is cultivated for human consumption. It is an opportunistic weed which spreads mainly by fouling ship hulls. It forms dense underwater forest ...
Urosalpinx cinerea (Atlantic oyster drill) Urosalpinx cinerea (the Atlantic oyster drill) is native to the North American Atlantic coast. It has invaded a few bays in the North American Pacific, southern Great Britain and recently the Netherla ...
Utricularia gibba (humped bladderwort) Low nutrient ecosystems, such as bogs and swamps, often contain unique plant species specially adapted to extreme conditions. While these habitats are more resilient to generalist invasive species the ...
Vallisneria nana (eelgrass) Vallisneria spp. commonly known as eelgrass are popular aquarium plants. They are submerged aquatic plants that can grow up to five metres. They grow in still or flowing water and form a dense monocul ...
Vallisneria spiralis (Eel Grass) Vallisneria spp. commonly known as eelgrass are popular aquarium plants. They are submerged aquatic plants that can grow up to five metres. They grow in still or flowing water and form a dense monocul ...
Varanus niloticus (Nile Monitor, Water Leguaan) Nile monitor lizards (Varanus niloticus) and Burmese pythons (Python bivittatus bivittatus) have become established in southern Florida. Both are large semi-aquatic predators that threat ...
Varroa destructor Varroa destructor is an external parasite found throughout most of the world that attacks all lifecycle stages of a broad range of honeybees. Varroa destructor sucks the blood from both the adults and ...
Verbascum thapsus (great mullein) Verbascum thapsus is an erect herb in the family Scrophulariaceae. It is found in neglected meadows and pasture lands, along fencerows and roadsides. It can produce 100,000-180,000 seeds per individua ...
Verbena brasiliensis (Brazilian vervain) Verbena brasiliensis is a herb native to South America. It displaces native vegetation through most of its non-native range and is considered invasive. Management for Verbena brasiliensis includes a ...
Verbena rigida (tuberous vervain) Verbena rigida is a perennial herb native to South America. It is popular for garden cultivation due to its conspicuous bright purple flowers that have an extended blooming period. However it h ...
Vespa velutina nigrithorax (European wasp) Vespula germanica, commonly known as the German or European wasp, is a social wasp species. In introduced regions, where it is often more successful than in its native range, it efficiently exp ...
Vespula germanica (European wasp) Vespula germanica, commonly known as the German or European wasp, is a social wasp species. In introduced regions, where it is often more successful than in its native range, it efficiently exp ...
Vespula pensylvanica (western yellowjacket) "Western yellowjackets (Vespula pensylvanica) are predators, feeding on a wide range of invertebrate taxa, with great potential for negative impact on the native fauna in insular habitats. " ...
Vespula vulgaris (English wasp) Vespula vulgaris (the common wasp) nest underground and in the cavities of trees and buildings. In addition to causing painful stings to humans, they compete with other insects and birds for insect p ...
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Invasive Status provided by Global Invasive Species Database Downloaded on 10 May 2011.