Top Results for Introduced

Wild pansy, Viola tricolor, is a small annual or short-lived perennial native to Europe and parts of western Asia. Its flowers commonly combine violet, blue, yellow, and white, giving rise to the name heartsease and other traditional names. The species contributed genetically to the cultivated garde...

A Eurasian annual widely naturalized in North America, valued for centuries in herbal medicine for its anti-inflammatory properties and commonly brewed as a calming tea.

Anthidium manicatum, commonly called the wool carder bee, is a solitary bee species native to Europe that has been introduced to North America and other regions. Females collect plant fibers from hairy leaves and stems, which they use to line their nest cavities, giving the species its common name....

Ragged robin, Silene flos-cuculi, is a herbaceous perennial native to Europe and parts of western Asia, where it grows in damp meadows, marshes, and stream margins. Its pink flowers have five petals, each divided into four narrow lobes that create a distinctly ragged appearance. Drainage, agricultur...

Red campion, Silene dioica, is a perennial or biennial flowering plant native to Europe and parts of western Asia. It bears rose-pink flowers with five deeply notched petals and commonly grows in hedgerows, woodland margins, roadside banks, and other partly shaded places. The species is dioecious, m...

The Cynthia moth (*Samia cynthia*), also known as the Ailanthus silkmoth, is a large saturniid moth native to Asia. It was introduced to Europe and North America in the mid-19th century in an attempt to establish a commercial silk industry. The larvae primarily feed on the leaves of the tree of heav...

Corn cockle (Agrostemma githago) is an annual flowering plant in the carnation family that was historically widespread as a weed of European grain fields. It has slender stems, narrow leaves, and pink-purple flowers, but its seeds contain toxic compounds and can contaminate harvested grain. Improved...

The ailanthus silkmoth, Samia cynthia, is a large moth in the family Saturniidae, native to parts of East Asia and first described by Dru Drury in 1773. Its larvae commonly feed on tree-of-heaven, or Ailanthus altissima, and produce silk that has been used commercially outside the domesticated silkw...

Salsify is a common name for several flowering plants in the genus Tragopogon, part of the daisy family, Asteraceae. Species such as common salsify were cultivated in Europe for their edible taproots, while related plants have become naturalized in North America. Their flower heads resemble dandelio...

Megachile apicalis is a solitary leafcutter bee in the family Megachilidae. Its native range includes Europe, North Africa, and parts of the Middle East, and it has also been recorded in the western and eastern United States after introduction. Like other leafcutter bees, the female uses pieces of l...

White campion, Silene latifolia, is a Eurasian perennial in the pink family, Caryophyllaceae, that has become established in parts of North America and other regions. It bears white flowers, usually opening toward evening, and most plants are either male or female, making it a dioecious species. Thi...

Yellow loosestrife is the common name for Lysimachia vulgaris, a perennial herb of wet habitats. It is native to much of Europe and Asia and has become naturalized in parts of North America. The plant produces upright stems with clusters of bright yellow, star-shaped flowers during summer. It is ass...

Hairy vetch, Vicia villosa, is a vining legume native to Eurasia and widely grown elsewhere as a winter cover crop, green manure, and forage plant. Its root-associated symbiosis fixes atmospheric nitrogen, while its dense growth can protect soil and suppress weeds. It produces purple to violet flowe...

Yellow goatsbeard is a common name used for yellow-flowered species of Tragopogon, especially meadow salsify (T. pratensis) and western salsify (T. dubius). These Eurasian members of the daisy family are often biennial or short-lived perennials with narrow, grass-like leaves, solitary yellow flower...

Hylaeus leptocephalus is a small bee in the family Colletidae and a member of the masked-bee genus Hylaeus. It is native to the Palearctic but became established in North America during the early twentieth century, where it occurs in the United States and southern Canada. In North America it is asso...

Rabbit-foot clover, Trifolium arvense, is an annual or biennial legume native to Europe and western Asia and now widespread in eastern and Pacific areas of North America. It grows in sunny, dry, often sandy places such as field edges, roadsides, dunes, vineyards, and orchards. Its alternate trifolia...

Megachile sculpturalis, commonly called the giant resin bee, is a large solitary bee in the family Megachilidae. It is native to East Asia, and females use plant resin when constructing nest cells, a behavior reflected in the common name; unlike honey bees, it does not live in a permanent social col...

Shepherd's purse, Capsella bursa-pastoris, is a small annual or winter-annual plant in the mustard family, Brassicaceae. It is native to Eurasia but now occurs across temperate and subtropical regions worldwide, commonly colonizing cultivated ground, roadsides, and other disturbed sites. The plant i...

Moth mullein, scientifically known as Verbascum blattaria, is a flowering plant in the family Scrophulariaceae. It is native to parts of Europe and has become established in areas of North America, where it can occur along roadsides, fields, and other disturbed ground. The plant is usually biennial...

Alsike clover is the common name for Trifolium hybridum, a perennial legume native to Europe. It was introduced to North America as a forage plant and has since become naturalized in meadows, roadsides, pastures, and other disturbed habitats. The plant produces rounded heads of pale pink to whitish...

Coltsfoot, Tussilago farfara, is a perennial flowering plant in the family Asteraceae. It is native to Eurasia and has been introduced to parts of North America and other regions. The plant is notable for producing yellow flower heads in late winter or early spring before its hoof-shaped leaves appe...

Black medick, Medicago lupulina, is a small legume native to Eurasia and now naturalized in many other parts of the world. It usually grows as a low, spreading annual or biennial plant in grassland, roadsides, lawns, and disturbed ground. The plant produces small yellow flower clusters and later for...

Prickly lettuce, Lactuca serriola, is an annual or biennial herb in the daisy family, Asteraceae. Native to Eurasia, it has become naturalized in many other regions and commonly grows in disturbed ground, roadsides, fields, and other open habitats. The plant is related to cultivated lettuce, Lactuca...

Yellow rocket is a Eurasian biennial mustard that has become naturalized across much of North America. It produces yellow flowers early in the growing season and is commonly associated with moist ground, wetlands, roadsides, and other disturbed habitats. Its young leaves have historically been eaten...

White sweet clover is the common name for Melilotus albus, a biennial legume native to Eurasia. It was introduced to North America for forage and as a plant used to increase soil nitrogen, but it has since become naturalized across many regions. The plant produces small white flowers arranged in elo...

Osmia taurus is a solitary mason bee native to East Asia. It was introduced into the United States in the early 2000s and has subsequently expanded its range in parts of eastern North America, including the Appalachian region. Like other mason bees, it nests individually rather than in a large socia...

Rough Cinquefoil, or Potentilla norvegica, is a flowering plant in the rose family, Rosaceae. It is an annual or biennial herb with yellow flowers and is associated with disturbed ground, roadsides, fields, and other open habitats. Native to parts of Eurasia, it has become naturalized in North Ameri...

Butter-and-Eggs is the common name for Linaria vulgaris, a perennial flowering plant in the plantain family, Plantaginaceae. Native to Eurasia, it was introduced to North America and has spread through roadsides, fields, pastures, disturbed ground, and other open habitats. Its upright stems carry sn...

Wild mustard is the common name for Sinapis arvensis, an annual flowering plant in the mustard family, Brassicaceae. Native to Eurasia, it has become established in many other regions, including North America, where it can compete with cereal crops and is treated as an agricultural weed. Its young l...