Describe the flowers of common pokeweed?

Flowers have 5 white to pink rounded sepals that are 0.25 in. (0.64 cm) wide. They are produced in clusters that are 4-8 in. (10.2-20.3 cm) long. The blooming period begins in early spring and continues into early summer.


What is the scientific name of wetland nightshade?


What is the common name of Clerodendrumchinense(Osb.) Mabberley?


Is Buglossoidesarvensis(L.) I.M. Johnston native to the United States?


What is the growth habit of RicinuscommunisL.?


What is the scientific name of flamegold?


What is the U.S. Department of Agriculture (USDA) plant symbol for TyphalatifoliaL.?


Leaves are clustered in a rosette at the base of the plant. Leaves vary in length from 2-14 in. (5.1-35.6 cm) and from 0.5-3 in. (1.3-7.6 cm) wide. Margins of the leaves are deeply serrated.


What is the common name of Achilleamillefoliumvar. occidentalisDC.?


What is the U.S. Department of Agriculture (USDA) plant symbol for EuphorbiaterracinaL.?


Does SolanumviarumDunal pose any ecological threat?

Solanum viaruminvades pastures, fields, and parks, but also has the potential to invade open forest and other natural areas. This plant forms thick stands that can be impenetrable to livestock, large wildlife, and humans.


What is the U.S. Department of Agriculture (USDA) plant symbol for PoabulbosaL.?


Is this plant invasive to the United States?

The following species have been reported to be invasive in natural areas in the United States. Species native to the United States are included when they are invasive in areas well outside their known natural ranges, as a result of human activities.


Is mission grass native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for common tarweed?


What is the growth habit of PanicumrepensL.?


What is the U.S. Department of Agriculture (USDA) plant symbol for AcaciamelanoxylonR. Br. ex Ait. f.?


What is the growth habit of creeping bellflower?


Is HeterothecagrandifloraNutt. native to the United States?


Where can I view images of Kummerowiastriata(Thunb.) Schindl.?


What is the scientific name of chinese silvergrass?


Does VerbenabonariensisL. pose any ecological threat?

V. bonariensisis native to South America. It has escaped cultivation and become naturalized in disturbed areas across the southeastern United States and in California. It is drought and heat tolerant and is very common along roadsides and other disturbed areas.V. bonariensisis very similar toV. montevidensisandV. incomptaand all three are invasive species.


What is the U.S. Department of Agriculture (USDA) plant symbol for FicusaltissimaBlume?


Is Lophostemonconfertus(R. Br.) P.G. Wilson & Waterhouse native to the United States?


What is the invasive/noxious status of perilla mint and where is it classified as such?


What is the growth habit of AegilopstriuncialisL?


Where can I view images of MenthaspicataL.?


Does seaside rose pose any ecological threat?

R. rugosacan tolerate some salinity and has become an invasive problem in many coastal regions, where it can form monotypic stands. It can change A native of temperate and coastal areas of East Asia, it was has been introduced around the world for ornamental purposes. It is now found in natural areas in Australia, New Zealand, Europe and North America.


Does CaraganaarborescensLam. pose any ecological threat?

Caragana arborescensinvades woodland edge environments, and pastures. It is native to Siberia and Manchuria.


Describe the foliage of Euonymusfortunei(Turcz.) Hand.-Maz.?

Leaves are opposite, glossy, dark green, oval, slightly toothed, with light-colored veins, about 1-2.5 in. (2.5-6.4 cm) long.


What is the U.S. Department of Agriculture (USDA) plant symbol for dalmatian toadflax?


Is english holly native to the United States?


What is the scientific name of ground ivy?


What is the U.S. Department of Agriculture (USDA) plant symbol for SchismusarabicusNees?


Is this plant invasive to the United States?


Describe the appearance of common pokeweed?

Phytolacca americanais a perennial herb with big leaves, a reddish trunk and reddish stems that can grow 6-12 ft. (1.8-3.7 m).


What is the U.S. Department of Agriculture (USDA) plant symbol for australian almond?


Is CarexpendulaHuds. native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for Photiniavillosa(Thunb.) DC.?


Describe the foliage of Kummerowiastriata(Thunb.) Schindl.?

Leaves are alternate, trifoliate, petiolate and up to 0.75 in. (4 cm) long. Leaves are subtended with 0.1-0.6 in. (3-6 mm) long, lance-shaped stipules.


Is Mosladianthera(Buch.-Ham. ex Roxb.) Maxim. native to the United States?


What is the scientific name of fourleaf manyseed?


What is the U.S. Department of Agriculture (USDA) plant symbol for weeping grass?


Describe the appearance of Alternantheraphiloxeroides(Mart.) Griseb.?

Alternanthera philoxeroidesis an emergent or rooted floating plant that invades aquatic areas and adjoining uplands throughout the southern portions of the United States. Plants have hollow stems and can grow to 3 ft. (1 m) tall.


Describe the appearance of Fatouavillosa(Thunb.) Nakai?

Fatoua villosais an annual that can grow to 2.6 ft. (0.8 m) tall. Stems are branched, erect and have hooked hairs.


What is the U.S. Department of Agriculture (USDA) plant symbol for Schoenoplectiellamucronata(L.) J. Jung & H. K. Choi?


What is the scientific name of cyclops acacia?


What is the scientific name of spearmint?


Does grecian foxglove pose any ecological threat?

D. lanatahas been seen to invade open sunny roadsides, yards, grasslands, river bluffs and forest edges where it displaces native vegetation. It tolerates a wide range of sites and conditions.Caution:All parts ofD. lanataare highly toxic to humans, livestock and wildlife. Ingestion of even a small amount may prove fatal. Prolonged exposure to bare skin can also produce adverse reactions.


What is the scientific name of maunaloa?


What is the common name of AcaciaconfusaMerr?


Is this plant invasive to the United States?


Describe the flowers of jointed goatgrass?

Flowering occurs in May to June, when the plants produce red (when mature) or straw-colored spikes. Spikes are cylindrical and contain 2-12 spikelets per spike.


What is the invasive/noxious status of LigustrumjaponicumThunb. and where is it classified as such?

Category 2 (Alabama), Invasive (North Carolina)


Describe the flowers of european water chestnut?

Trapa natanshas small, four-petaled flowers that bloom from July to frost.


What is the growth habit of AmaranthusretroflexusL.?


What is the U.S. Department of Agriculture (USDA) plant symbol for boreal chickweed?


Where can I view images of HypochaerisradicataL.?


Is Fatouavillosa(Thunb.) Nakai native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for HeliotropiumamplexicauleL.?


What is the common name of ZanthoxylumamericanumP. Mill.?


Where can I view images of Lantanamontevidensis(Spreng.) Briq.?


Where can I view images of Rotalarotundifolia(Buch.-Ham. ex Roxb.) Koehne?


What is the scientific name of plume poppy?


Describe the fruit of iberian starthistle?

Seeds are plumed, the distinguishing factor between this plant and purple starthistle.


Describe the flowers of european black alder?

The individual flowers are small and inconspicuous individually, but together they form a catkin. They flower in the spring and catkins remain on the trees through the fall.


Is CruciatalaevipesOpiz native to the United States?


What is the common name of Chelidoniummajusvar. majusL.?


What is the U.S. Department of Agriculture (USDA) plant symbol for balsam poplar?


Describe the foliage of japanese wisteria?

Alternate, pinnately compound leaves (13-19 leaflets) are tapered at the tip with wavy edges. Leaves are up to 12 in. (30 cm) in length.


What is the U.S. Department of Agriculture (USDA) plant symbol for CitharexylumspinosumL.?


Is this plant invasive to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for chandelier plant?


What is the scientific name of monkeypod?


What is the U.S. Department of Agriculture (USDA) plant symbol for Drymariacordata(L.) Willd. ex J.A. Schultes?


What is the growth habit of balsamapple?


What is the common name of Euonymusalatus(Thunb.) Sieb.?


Where can I view images of Persicarialongiseta(Bruijn) Kitagawa?


What is the invasive/noxious status of slender snakecotton and where is it classified as such?


Where can I view images of ThunbergialaurifoliaLindl.?


What is the scientific name of herb bennet?


Describe the foliage of mediterranean sage?

Fine, woolly hairs cover the stems, new leaves and leaf undersides. Mature plants become less hairy and develop prominent venation on the leaves. Rosette leaves are grayish-green, petiolate and 4-12 in. (10.2-30.5 cm) long. Rosettes can be 1-4 ft. (0.3-1.2 m) in diameter. The stem leaves are opposite, smaller than the rosette leaves and aromatic (sage-like) when crushed. Leaves become smaller toward the apex of the stem.


Is crimson fountaingrass native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for summer snowflake?


Is hierba del soldado native to the United States?


What is the growth habit of Malusbaccata(L.) Borkh.?


The following species have been reported to be invasive in natural areas in the United States. Species native to the United States are included when they are invasive in areas well outside their known natural ranges, as a result of human activities.


Is TrifoliumarvenseL. native to the United States?


Describe the appearance of bull thistle?

Cirsium vulgareis an annual or biennial, herbaceous plant that invades disturbed areas throughout the United States. The spiny, spreading, winged stems are up to 7 ft. (2.1 m) tall.


Is Oxysporapaniculata(D. Don) DC. native to the United States?


What is the common name of LactucasativaL.?


Where can I view images of ClematisvitalbaL.?


Describe the flowers of skeletonleaf bursage?

The yellow flowers ofA. tomentosaare very small and inconspicuous. The male flowers are held in umbels at the top of the stem while the spiny female flowers are found in the leaf axils. The spiny female flowers help to set this species apart from other Ambrosia species.


Is Phymatosorusscolopendria(Burm. f.) Copeland native to the United States?


Is bloodflower milkweed native to the United States?


What is the growth habit of CyperushaspanL.?


Describe the fruit of CentaureastoebeL.?

Fruits appear from June-February. Tightly packed seed heads of oblong, brownish, hairy nutlets (achenes), 0.1 in. (3 mm) long, topped by short stubby bristles. A thousand seeds can be produced per plant.


Is this plant invasive to the United States?


What is the common name of TribulusterrestrisL.?


What is the growth habit of japanese cedar?


What is the invasive/noxious status of fortune meadowsweet and where is it classified as such?


What is the U.S. Department of Agriculture (USDA) plant symbol for PinuspineaL.?


Is european sea-rocket native to the United States?


Opposite leaves are membranous or herbaceous, broadly ovate or orbicular, 2.76-5.12 in. long by 1.77-3.94 in. wide (7-13 cm X 4.5-10 cm), with mucronate tips, a rounded or broad cuneate bases, and dentate margins. The pilose surface of the leaves may be green or purple on both sides. Each leaf has seven to eight pairs of lateral veins, which are closer together near the base. The veins on the upper surface are slightly raised, more so on the underside. The petiole is flat and villose.


Describe the foliage of Rorippaaustriaca(Crantz) Bess.?

Leaves are sessile, clasping, bluish green, 1.2-3.9 in. (3-10 cm) long, oblong to oblanceolate, glabrous, and entire to dentate.


What is the common name of AcaciaparadoxaDC.?


Where can I view images of Centromadiapungensssp. pungens(Hook. & Arn.) Greene?


What is the scientific name of curly leaf pondweed?


What is the scientific name of strawberry guava?


What is the growth habit of field brome?


Is FrangulaalnusMill. native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for bloodflower milkweed?


What is the U.S. Department of Agriculture (USDA) plant symbol for Lespedezacuneata(Dum.-Cours.) G. Don?


Flowering occurs in April to October, when large, silver, plume-like inflorescences develop. The inflorescences can be up to 3 ft. (0.9 m) long.


What is the common name of PopulusgrandidentataMichx.?


Is CasuarinaequisetifoliaL. native to the United States?


Describe the foliage of DioscoreabulbiferaL.?

The leaves are alternate, 8 in. (20.3 cm) long, broadly-heart shaped with prominent veins that resemble greenbrier leaves. The rounded stems are thin and wiry.


Is this plant invasive to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for arrow bamboo?


What is the common name of Persicarialongiseta(Bruijn) Kitagawa?


What is the invasive/noxious status of japanese ardisia and where is it classified as such?


What is the invasive/noxious status of european privet and where is it classified as such?

Invasive (Delaware), Potentially Invasive (Connecticut)


Describe the flowers of Loniceramaackii(Rupr.) Herder?

The white flowers are found in erect pairs that are on peduncles shorter than the petioles. The flowers measure 0.6-0.75 in. (1.5-2 cm) long and are bilabiate. The flowers appear on the plant from late May to early June, which is later than the other honeysuckles.


Describe the foliage of california privet?

Leaves are elliptic-ovate to elliptic-oblong, 1.2-2.4 in. (3-6 cm) long, acute, broad-cuneate, dark lustrous green above, yellowish green below. Petioles are 0.12-0.16 in. (3-4 mm) long.


The chief means of reproduction is by aerial potato-like tubers (bulbils) located at the leaf axils and by underground tubers.


Is pinkhead smartweed native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for Jacquemontiatamnifolia(L.) Griseb.?


Is moth mullein native to the United States?


What is the invasive/noxious status of LonicerajaponicaThunb. and where is it classified as such?

Category 1 (Alabama), Invasive (Delaware), Invasive (DOC, IPC) (Missouri), Invasive (North Carolina), Invasive, Prohibited (Connecticut), Prohibited (New York), Prohibited (Wisconsin)


Where can I view images of yellow starthistle?


Is LinariavulgarisP. Mill. native to the United States?


Where can I view images of GalegaofficinalisL.?


What is the U.S. Department of Agriculture (USDA) plant symbol for Berteroaincana(L.) DC?


Is Lamiumgaleobdolon(L.) Crantz native to the United States?


What is the growth habit of Paulowniatomentosa(Thunb.) Sieb. & Zucc. ex Steud.?


Is ceara rubbertree native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for Ardisiajaponica(Thunb.) Blume?


Is this plant invasive to the United States?


What is the common name of LoliumperenneL.?


Describe the foliage of creeping yellow loosestrife, creeping jenny?

The leaves are opposite, simple and broadly ovate 0.25-1.5 in (0.6-3.8 cm) long with entire margins. The leaves are obtuse at both ends, resembling coins and giving it the common name, moneywort.


Where can I view images of PrunuslaurocerasusL.?


What is the invasive/noxious status of diffuse knapweed and where is it classified as such?

Prohibited (New York), Prohibited (Wisconsin)


What is the U.S. Department of Agriculture (USDA) plant symbol for castorbean?


What is the common name of HypericumandrosaemumL.?


Where can I view images of FicuselasticaRoxb.?


Is common four-o'clock native to the United States?


Describe the appearance of Vincetoxicumrossicum(Kleopov) Barbarich?

Vincetoxicum rossicumis an herbaceous, twining, long-lived perennial vine. The vines can reach 5 ft. (1.5 m) in length.


Is SpiraeaprunifoliaSieb. & Zucc. native to the United States?


Where can I view images of field indian paintbrush?


Is everlasting peavine native to the United States?


What is the growth habit of Sileneflos-cuculi(L.) Clairv.?


Describe the foliage of Eragrostiscurvula(Schrad.) Nees?

Leaves are arched, 0.11-0.16 in. (3-4 mm) wide, flat, with ciliate ligules. Sheaths have long hairs inside the upper margin and along the collar. Spikelets are nodding, 0.2-0.4 in. (4-10 mm) long, 0.06-0.07 in. (1.5-2 mm) wide and gray-green.


What is the scientific name of norway spruce?


The following species have been reported to be invasive in natural areas in the United States. Species native to the United States are included when they are invasive in areas well outside their known natural ranges, as a result of human activities.


Where can I view images of NicotianaglaucaGraham?


Is this plant invasive to the United States?


What is the growth habit of PotentillarectaL.?


What is the common name of Erodiumcicutarium(L.) L'Hér. ex Ait.?


Is PterisvittataL. native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for ArenariaserpyllifoliaL.?


Where can I view images of DioscoreapolystachyaTurcz.?


Is Cortaderiaselloana(Schult. & Schult. f.) Asch. & Graebn. native to the United States?


What is the common name of Setariaverticillata(L.) Beauv.?


Is thymeleaf speedwell native to the United States?


What is the growth habit of PaspalumscrobiculatumLinnaeus?


What is the common name of Sorbariasorbifolia(L.) A. Braun?


What is the growth habit of scarlet firethorn?


Where can I view images of HelichrysumpetiolareHilliard & Burtt?


Does MorusalbaL. pose any ecological threat?

Morus albais very similar to the native red mulberry (Morus rubra), but may be distinguished by the leaves.Morus albaleaves have glossy surfaces whereas the leaves ofMorus rubrado not.Morus albais found throughout the United States, where it invades old fields, urban lots, roadsides, forest edges, and other disturbed areas. It poses an ecological threat by displacing native species, possibly hybridizing with and transmitting a root disease to the nativeMorus rubra.Morus albais native to Asia and was introduced in colonial times as a food source for silkworms.


What is the U.S. Department of Agriculture (USDA) plant symbol for TaraxacumerythrospermumAndrz. ex Besser?


What is the U.S. Department of Agriculture (USDA) plant symbol for PassiflorabifloraLam.?


Where can I view images of waxy mannagrass?


What is the U.S. Department of Agriculture (USDA) plant symbol for damask rose?


Under favorable conditions,Rottboellia cochinchinensisstarts producing seeds 6-7 weeks after emergence. Seed production continues throughout the growing season.


What is the common name of WashingtoniarobustaH. Wendl.?


What is the growth habit of princesstree?


Describe the fruit of Hirschfeldiaincana(L.) Lagrèze-Fossat?

Fruits are 0.04-0.06 in. (1-1.5 cm) long with 0.12-0.24 in. (3-6 mm) terminal segments. Seeds are 0.04-0.06 in. (1-1.5 mm) in diameter, brown, and ovoid to subglobose.


Is this plant invasive to the United States?


What is the common name of MyosotisdiscolorPers.?


Is Descurainiasophia(L.) Webb ex Prantl native to the United States?


What is the growth habit of slender oat?


What is the common name of PrunuscerasiferaEhrh.?


Where can I view images of Pinuscontortavar. latifoliaEngelm. ex S. Watson?


What is the U.S. Department of Agriculture (USDA) plant symbol for waterclover?


What is the U.S. Department of Agriculture (USDA) plant symbol for narrowleaf firethorn?


What is the growth habit of portia tree?


What is the common name of Ageratinariparia(Regel) King & H.E. Robins.?


What is the U.S. Department of Agriculture (USDA) plant symbol for Lantanamontevidensis(Spreng.) Briq.?


Describe the appearance of AmbrosiatomentosaNutt.?

Ambrosia tomentosa'is a long lived perennial herbaceous plant in the sunflower family (Asteraceae) growing up to 3 ft (0.91 m) in height.A. tomentosadevelops extensive horizontal roots. It is native to the Great Plains region.


What is the U.S. Department of Agriculture (USDA) plant symbol for swainsonpea?


Is orange hawkweed native to the United States?


Leaves are alternate, three-foliate and petiolate 0.08-0.16 in. (2-4 mm) long. Leaflets are elliptic to obovate, often with a short point.


Where can I view images of boreal chickweed?


What is the invasive/noxious status of chinese silvergrass and where is it classified as such?

Invasive (Delaware), Invasive (North Carolina), Potentially Invasive (Connecticut), Regulated (New York), Watch List (Alabama)


What is the growth habit of catclaw mimosa?


Is this plant invasive to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for Malvastrumcoromandelianum(L.) Garcke?


What is the U.S. Department of Agriculture (USDA) plant symbol for Malustoringo(Siebold) Siebold ex de Vriese?


Does GlechomahederaceaL. pose any ecological threat?

Glechoma hederaceais native to Eurasia and was introduced into North America, as an ornamental or medicinal plant, as early as the 1800s. It is common in moist areas, disturbed sites, low woods, lawns and along roadsides.


Describe the appearance of malta starthistle?

Centaurea melitensisis a winter annual with a yellow-flowered, spiny head that can reach a height of 3.3 ft. (1 m). tall.


What is the growth habit of AiracaryophylleaL.?


Does korean lespedeza pose any ecological threat?

K. stipulaceaoccurs in old fields, roadsides, grasslands, mountain slopes, stable or semistable sand dunes. It is native to Korea and was introduced into the United States and has become established in natural areas.


Is buffelgrass native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for SisymbriumaltissimumL.?


Is red clover native to the United States?


Describe the fruit of uruguayan pampas grass?

The wind-dispersed seeds ofCortaderia selloanacan be found at distances up to 20 mi. (32.2 km) away from the parent plant. Each female flower head can produce up to 100,000 seeds.


What is the growth habit of tea viburnum?


What is the U.S. Department of Agriculture (USDA) plant symbol for Alliariapetiolata(Bieb.) Cavara & Grande?


Is indian coralbean native to the United States?


Describe the fruit of HumulusjaponicusSiebold & Zucc.?

Fruit is a yellow-brown ovoid achene. The small seeds are distributed by wind and water.


What is the scientific name of skeletonleaf bursage?


Describe the fruit of ConiummaculatumL.?

C. maculatumreproduces from seed. Fruits are ridged and flattened, and each fruit holds two seeds.


What is the U.S. Department of Agriculture (USDA) plant symbol for Rytidospermacaespitosum(Gaudich.) Connor & Edgar?


What is the growth habit of Cinnamomumburmanni(Nees & Th. Nees) Nees ex Blume?


What is the scientific name of white passionflower?


Is curly plumeless thistle native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for giant reed?


The seeds are dense, cylindrical, symmetrical spike-like panicle, 2-5 in. (5-12.7 cm) long. The seeds have little hairs on them.


Where can I view images of yellow bluestem?


Describe the appearance of prickly lettuce?

Lactuca serriolais an annual or biennial that can reach heights of 6 ft. (1.8 m).


Describe the flowers of Phyllostachysnigra(Lodd.) Munro?

Flowers and fruit are very rarely produced.


Is LythrumsalicariaL. native to the United States?


Is french broom native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for benghal dayflower?


Where can I view images of EucalyptuscamaldulensisDehnhardt?


Is this plant invasive to the United States?

The following species have been reported to be invasive in natural areas in the United States. Species native to the United States are included when they are invasive in areas well outside their known natural ranges, as a result of human activities.


What is the U.S. Department of Agriculture (USDA) plant symbol for european water chestnut?


What is the growth habit of Furcraeafoetida(L.) Haw?


Where can I view images of foxtail barley?


Does CyperusentrerianusBoeckl. pose any ecological threat?

Cyperus entrerianuscan invade wet undisturbed natural habitats as well as disturbed areas such as highway ditches and field margins. It can form monocultures, displacing native vegetation in habitats it invades. Construction, agricultural activities, and roadside mowing are spreading the seeds and dispersing this plant to new areas. It is tolerant of a wide range of soil types from sand to clay.Cyperus entrerianusis native to South America and was accidentally introduced into the United States around 1990. It invades disturbed areas through-out the southeastern United States.


Where can I view images of golden bamboo?


What is the U.S. Department of Agriculture (USDA) plant symbol for GrevillearobustaA. Cunningham ex R. Br.?


Where can I view images of GaliumverumL.?


Achenes are approximately 0.13 in. (0.33 cm) long, several-nerved, and black or brown with white pappus that may disperse seeds long distances by wind.


What is the common name of Limnophilasessiliflora(Vahl) Blume?


What is the growth habit of EuphorbiaterracinaL.?


Describe the flowers of JacobaeavulgarisGaertn.?

Flowering occurs in summer to early fall, when numerous yellow, daisy-like flowers develop in a flat topped inflorescence at the apex of the stems. Flower heads are 0.8 in. (2 cm) in diameter.


What is the common name of ScleriamicrocarpaNees ex Kunth?


What is the U.S. Department of Agriculture (USDA) plant symbol for RubusbifronsVest ex Tratt.?


What is the U.S. Department of Agriculture (USDA) plant symbol for scottish rose?


Is bridalwreath spiraea native to the United States?


Slender, cylindrical fruit up to 2 in. (5 cm) long. Splitting when dry to release three to five seeds.


Where can I view images of Tibouchinaurvilleana(DC.) Cogn.?


Does LigustrumvulgareL. pose any ecological threat?

Ligustrums can tolerate a wide range of conditions. They form dense thickets invading fields, fencerows, roadsides, forest understories, and riparian sites. They can shade out and exclude native understory species, perhaps even reduce tree recruitment. Native to Europe and Asia, they are commonly used as ornamental shrubs and for hedgerows.


Is rescuegrass native to the United States?


Does Vincetoxicumnigrum(L.) Moench pose any ecological threat?

Vincetoxicum nigrumreadily invades upland areas. It tolerates a wide range of light and moisture conditions and can be found invading a wide variety of upland habitat types. It is native to Europe. The history of its introduction is uncertain, but it may have escaped from a botanical garden.


What is the common name of Silenelatifoliassp. alba(Mill.) Greuter & Burdet?


Is this plant invasive to the United States?


Is SinapisarvensisL. native to the United States?


What is the scientific name of littleseed canarygrass?


Does ArdisiaellipticaThunb pose any ecological threat?

Ardisia ellipticagrows well in low, wet areas and in old fields. This species is shade-tolerant. Birds eat the fruit and so disperse the seeds.Ardisia ellipticais a native of Southeast Asia and was introduced into the United States as an ornamental in the late 1800’s.


What is the U.S. Department of Agriculture (USDA) plant symbol for Sporobolusdiandrus(Retz.) P. Beauv.?


What is the U.S. Department of Agriculture (USDA) plant symbol for HedychiumgardnerianumShepard ex Ker-Gawl.?


Is cutleaf nightshade native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for Vitisspp.L.?


What is the common name of Berteroaincana(L.) DC?


Is hairy indian mallow native to the United States?


What is the growth habit of jerusalem-cherry?


What is the U.S. Department of Agriculture (USDA) plant symbol for CastillaelasticaSessé?


Does asiatic dayflower pose any ecological threat?

Commelina communiscan be found in moist, shady forest edges. It can be found in wet areas of crop fields, orchards, ditches, and roadsides.


Describe the foliage of EuphorbiamyrsinitesL?

Leaves are alternate in tight spirals, grey-blue, thick, waxy, oval to wedge-shaped, pointed at the tip, and 0.63-1.25 in. (1.6-3.2 cm) long and 0.25-1 in. (0.64-2.5 cm) wide.


What is the U.S. Department of Agriculture (USDA) plant symbol for DrabavernaL.?


What is the U.S. Department of Agriculture (USDA) plant symbol for swampmahogany?


What is the U.S. Department of Agriculture (USDA) plant symbol for colombian bluestem?


What is the U.S. Department of Agriculture (USDA) plant symbol for nepalese firethorn?


Is sticky chickweed native to the United States?


What is the growth habit of germander speedwell?


Does giant salvinia pose any ecological threat?

After maturing,S. molestaforms chains of leaves that run together to form thick mats on the surface of the water. These mats restrict oxygen and light availability causing death of the primary producers and disrupting the aquatic food chain.S. molestais on the Federal Noxious Weed list and can invade most any type of aquatic system. The plant is native to South America and was first introduced into North America as an ornamental.


What is the U.S. Department of Agriculture (USDA) plant symbol for canary island date palm?


Is this plant invasive to the United States?


What is the common name of ArdisiacrenataSims?


Where can I view images of sulfur cinquefoil?


What is the growth habit of african mustard?


Is Hymenachneamplexicaulis(Rudge) Nees native to the United States?


Where can I view images of peacocksplume?


What is the growth habit of false spiraea?


What is the growth habit of ripgut brome?


Acer palmatumhas a palmate leaf that is from 2-5 in. (5-13 cm) across with from 5 to 9 lobes. The foliage is usually green with fall colors ranging from yellow, bronze, purple, orange to red. The beautiful fall colors are some of the reasons this tree has been used in landscaping. The cultivars ofAcer palmatumvary widely.


Is wavyleaf basketgrass native to the United States?


What is the scientific name of turk's turbin?


Where can I view images of european mountain-ash?


What is the U.S. Department of Agriculture (USDA) plant symbol for arabian jasmine?


Does MiscanthussinensisAnderss. pose any ecological threat?

Miscanthus sinensisescapes from ornamental plantings and can form large clumps along disturbed areas, displacing native vegetation. The grass is also extremely flammable and increases fire risks of invaded areas. It is native to Asia and was introduced into the United States for ornamental purposes during the late 1800s.


Is marsh dayflower native to the United States?


Is fishtail swordfern native to the United States?


Is HumulusjaponicusSiebold & Zucc. native to the United States?


Describe the fruit of TamarixchinensisLour.?

Fruits are capsules that are 0.12-0.16 in. (3-4 mm).


Is this plant invasive to the United States?


What is the common name of Thespesiapopulnea(L.) Soland. ex Correa?


Where can I view images of diffuse knapweed?


What is the scientific name of common mallow?


Is wild chervil native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for Marsileaspp.?


What is the U.S. Department of Agriculture (USDA) plant symbol for CruciatalaevipesOpiz?


Flowering occurs in the spring, when showy, lavender, 5-petaled flowers develop in panicles.


What is the scientific name of browne's blechum?


What is the U.S. Department of Agriculture (USDA) plant symbol for TamarixramosissimaLedeb.?


Is BidenscernuaL native to the United States?


What is the common name of Toxicodendronradicans(L.)Kuntze?


Describe the foliage of black dog-strangling vine, black swallowwort?

Leaves are opposite, dark green, oval, and shiny with entire margins. Leaves are from 3-4 in. (7.6-10.2 cm) long and 2-3 in. (5.1-7.6 cm) wide. A short petiole attaches the leaf to the vine.


What is the invasive/noxious status of siberian elm and where is it classified as such?


What is the scientific name of tropical burnweed?


The following species have been reported to be invasive in natural areas in the United States. Species native to the United States are included when they are invasive in areas well outside their known natural ranges, as a result of human activities.


What is the U.S. Department of Agriculture (USDA) plant symbol for Coixlacryma-jobiL.?


What is the scientific name of wisconsin weeping willow?

Salixx pendulinaWenderoth [babylonica × fragilis]


Is LepidiumvirginicumL. native to the United States?


What is the growth habit of SagittariagramineaMichx.?


Is wild mustard native to the United States?


What is the growth habit of LepidiumappelianumAl-Shehbaz?


What is the U.S. Department of Agriculture (USDA) plant symbol for aboriginal willowherb?


What is the U.S. Department of Agriculture (USDA) plant symbol for mexican tulip poppy?


What is the common name of Cytisusstriatus(Hill) Rothm?


Where can I view images of ScabiosaatropurpureaL.?


Is this plant invasive to the United States?


What is the common name of HederacanariensisWilld.?


Describe the appearance of VincaminorL.?

Vinca minoris a vine-like erect or trailing groundcover; mostly evergreen; stems slender.


What is the growth habit of FallopiaconvolvulusL.?


Describe the foliage of LigustrumobtusifoliumSieb. & Zucc.?

Its opposite leaves are elliptic to oblong-ovate in shape and measure 1-2 in. (2.5-5 cm) long and 0.3-1 in. (0.75-2.5 cm) wide. The apex of the leaf can be either acute or obtuse in shape. The upper leaf surface is dark green in color, while the lower surface is pubescent, or only pubescent on the mid-rib.


What is the growth habit of hairy vetch?


Is Thinopyrumintermedium(Host) Barkworth & D.R. Dewey native to the United States?


Is Crataegusphaenopyrum(L. f.) Medik. native to the United States?


Where can I view images of PrunusspinosaL.?


What is the U.S. Department of Agriculture (USDA) plant symbol for orange?


What is the scientific name of spotted knapweed?


Where can I view images of fountaingrass?


Is white moho native to the United States?


Describe the flowers of bluebuttons, field scabious?

The lilac to purple flowers are held in a dense rounded inflorescence from 0.6-1.6 in (1.5-4 cm) wide. Individual flowers have four lobes, are funnel-shaped and are from 0.4-0.5 in (9-12 mm) long.


Where can I view images of white garland-lily?


The small, white flowers densely cover oval flower heads and are present from July to September. Spiny bracts are located on the ends of flower stems.


Peganum harmalais a perennial plant with a low-growing, bushy habit reaching 2-3 ft. (0.6-0.9 m) in height.


Where can I view images of TrifoliumcampestreSchreb.?


Is IpomoeahederaceaJacq. native to the United States?


Describe the flowers of austrian fieldcress?

Flowers are yellow in color and grow in clusters at the ends of the stems. Sepals are 0.08-0.1 in. (2-2.5 mm) across, and petals are 0.12-0.2 in. (3-5 mm) across.


Is SalixpurpureaL. native to the United States?


Does LepidiumlatifoliumL. pose any ecological threat?

Lepidium latifoliuminvades coastal wetlands, riverbanks, marshes, rangelands, and roadsides. It can form dense monocultures that can increase in size over time crowding out native species. This plant was accidentally introduced into the United States around 1936 as contaminant in seed. It is native to Eurasia.


What is the U.S. Department of Agriculture (USDA) plant symbol for broadleaf forget-me-not?


What is the growth habit of SisymbriumirioL.?


What is the U.S. Department of Agriculture (USDA) plant symbol for whitetop?


Describe the appearance of PyruscalleryanaDecne.?

Bradford pear is a cultivar ofPyrus calleryana. It is a deciduous tree that can grow up to 60 ft. (18 m) in height and 2 ft. (0.6 m) in diameter.


Is this plant invasive to the United States?


Is common st. johnswort native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for Corydalisincisa(Thunb.) Pers.?


What is the U.S. Department of Agriculture (USDA) plant symbol for Anthoxanthumodoratumssp. odoratumL.?


Acer ginnalais a small tree that grows 15-20 ft. (4.5-6 m) in height. The bark of the tree is smooth and gray.


What is the growth habit of slender snakecotton?


Is winter vetch native to the United States?


Is EquisetumarvenseL native to the United States?


What is the growth habit of CaraganaarborescensLam.?


Is Brassicajuncea(L.) Czern native to the United States?


Where can I view images of dotted smartweed?


What is the scientific name of annual wormwood?


What is the common name of DigitariaviolascensLink?


Where can I view images of ViciacraccaL.?


Is rough mannagrass native to the United States?


Where can I view images of HordeumjubatumL.?


What is the common name of CarexpendulaHuds.?


What is the scientific name of castorbean?


Is small carpetgrass, joint-head grass native to the United States?


Does Didymospheniageminata(Lyngbye) M. Schmidt pose any ecological threat?

Didymosphenia geminatacan be found in a Found in rivers, streams, and lakes. Prefers flowing water sources. It blankets streams or lake beds; blocks plants from sunlight and animals that eat plants from reaching them; and greatly reduces dissolved oxygen content in water.


What is the U.S. Department of Agriculture (USDA) plant symbol for LunariaannuaL.?


What is the growth habit of Salpichroaoriganifolia(Lam.) Thell.?


Is creeping liriope native to the United States?


Where can I view images of EuphorbiamyrsinitesL?


Describe the fruit of lily of the valley vine?

Fruit is a rounded ovoid (egg shaped) berry which is white to pale yellow and translucent. Each fruit contains several seed.


Does PaspalumquadrifariumLam. pose any ecological threat?

Paspalum quadrifariumis found in neglected areas along roadsides, streams, wetlands and drains. The plant can spread rapidly through rhizomes or seeds and aggressively forms extremely dense infestations in a few years. Rhizomes move horizontally, sending up suckers, which form large, dense tufts. Native to Uruguay, Paraguay, Brazil and Argentina, this plant is used as an ornamental in Florida and has naturalized in Dade County. It can now be found in Georgia and other disturbed habitats of the southeastern United States. It is considered a noxious weed in Australia.


What is the U.S. Department of Agriculture (USDA) plant symbol for large hop clover?


Is this plant invasive to the United States?


What is the growth habit of octopus tree?


Is punagrass native to the United States?


Is petty spurge native to the United States?


Does tawny daylily pose any ecological threat?

Hemerocallis fulvaestablished in natural areas pose a threat to native plants in field, meadows, floodplains, moist woods and forest edges. Once established, this plant multiplies and spreads to form dense patches that displace native plants. The thick tubers make it a challenge to control. Common or orange daylily was introduced into the United States in the late 19th century as an ornamental.


The edible fig fruit is the mature synconium on the outside and numerous one-seeded fruit on the inside. This type of multiple fruit is sometimes called infructescence. The fruit is 1.2-2 in. (3-5 cm) long, with a green skin, sometimes ripening towards purple or brown.


Is seaside barley native to the United States?


What is the growth habit of Sennaseptemtrionalis(Viviani) Irwin & Barneby?


Describe the fruit of LeonuruscardiacaL.?

Fruits reddish brown to brown three sided nutlets. Each flower produces four nutlets.


What is the U.S. Department of Agriculture (USDA) plant symbol for ohio buckeye?


What is the growth habit of seifriz's chamaedorea?


What is the growth habit of VeronicaarvensisL.?


Is AgrostemmagithagoL native to the United States?


What is the invasive/noxious status of Wisteriasinensis(Sims) DC. and where is it classified as such?

Category 1 (Alabama), Invasive (Delaware), Invasive (IPC) (Missouri), Invasive (North Carolina), Prohibited (Wisconsin), Tier 2 (Maryland)


Does ViburnumopulusL. pose any ecological threat?

Viburnum opulusis reported in Ontario, British Columbia, Alberta, Saskatchewan, Manitoba, Quebec and Newfoundland. In the United States it is reported from Washington east to Maine and as far south as Missouri and Virginia. It poses an ecological threat by competing with native plants for habitat and resources. It can be found in swamps, bogs, stream banks, open woodlands, forest edges, hedgerows and thickets. It grows in both heavy clay and acidic soil.


The following species have been reported to be invasive in natural areas in the United States. Species native to the United States are included when they are invasive in areas well outside their known natural ranges, as a result of human activities.


What is the scientific name of purple pampasgrass?


What is the scientific name of beach wormwood?


Where can I view images of cuban bulrush?


Where can I view images of mayweed, scentless chamomile?


What is the common name of Veronicaserpyllifoliassp. serpyllifoliaL.?


What is the growth habit of smallflower galinsoga?


Describe the flowers of LamiummaculatumL.?

This plant’s color is a pink, dark lavender, or white, depending upon cultivar. The flowering appears heavily in May and June and sporadically thereafter, sometimes with a minor flush in early Autumn. Numerous clusters of small flowers occur at each node and the stem terminals.


Describe the flowers of TamarixgallicaL.?

Flowers are small and white to pink in color.


What is the U.S. Department of Agriculture (USDA) plant symbol for waxy mannagrass?


What is the growth habit of cupid's-shaving-brush?


Describe the appearance of shining geranium?

Geranium lucidumgrows predominantly as an annual weed though it may become biennial depending on moisture conditions.


C. maculatumreproduces from seed. Fruits are ridged and flattened, and each fruit holds two seeds.


Is Veronicaserpyllifoliassp. serpyllifoliaL. native to the United States?


What is the growth habit of oriental lady's thumb?


Is Knautiaarvensis(L.) Coult. native to the United States?


What is the growth habit of Ipomoeapurpurea(L.) Roth?


Describe the appearance of FicuscaricaL.?

Ficus caricais a deciduous tree that can grow up to 22.6-32.8 ft. (6.9-10 m) in height. It can easily be spotted with its smooth grey bark.


What is the U.S. Department of Agriculture (USDA) plant symbol for EchiumvulgareL.?


Does ArundodonaxL. pose any ecological threat?

Arundo donaxinvades wetlands such as ditches, stream banks and lake shores.Arundo donaxcompetes for water, nutrients and radiation, suppresses and excludes native vegetation which degrades wildlife habitat, increases fire risks and interferes with flood control.Arundo donaxis native to India and was introduced into the United States in the early 1800s for ornamental purposes.


What is the invasive/noxious status of UlmuspumilaL. and where is it classified as such?


What is the common name of BromussterilisL.?


Describe the fruit of HypericumperforatumL.?

The fruits are three-chambered capsules with three persistent styles.


Where can I view images of CinchonapubescensVahl?


What is the U.S. Department of Agriculture (USDA) plant symbol for longspine sandbur?


What is the common name of NajasminorAll.?


Is this plant invasive to the United States?


What is the growth habit of lindley's butterflybush?


Is american frogbit native to the United States?


Where can I view images of ViciasativaLinnaeus?


Flowers are up to 1 in. (2.5 cm) across and have 5 white to pale yellow petals with some purple coloring close to the center. The blooming period occurs during the summer.


What is the U.S. Department of Agriculture (USDA) plant symbol for Rubusspp.L.?


Does OnopordumacanthiumL. pose any ecological threat?

O. acanthiumis a major agricultural weed in western United States. With enough moisture, it can resprout from roots cut up during cultivation. This plant spreads easily because each plant can produce over 20,000 wind dispersed seeds. The seeds can also be dispersed by water or by being caught in the fur of animals.


Where can I view images of IpomoeaaquaticaForssk.?


Is basketplant native to the United States?


What is the common name of Dittrichiagraveolens(L.) W. Greuter?


What is the common name of NardusstrictaL.?


What is the growth habit of spring whitlowgrass?


What is the scientific name of canada goldenrod?

Solidagocanadensisvar. scabraTorr. & Gray


What is the common name of Hieraciumpilosellavar. pilosellaL.?


What is the invasive/noxious status of gray dogwood and where is it classified as such?


What is the growth habit of SpathodeacampanulataBeauv.?


What is the growth habit of Ptychospermaelegans(R. Br.) Blume?


What is the U.S. Department of Agriculture (USDA) plant symbol for Knautiaarvensis(L.) Coult.?


Describe the appearance of HelichrysumpetiolareHilliard & Burtt?

Helichrysum petiolareis a climbing scrambling shrub grows unsupported to 2 ft. (0.61 m) tall and spreading to 6 ft. (1.8 m) wide but with some support can climb higher.


What is the invasive/noxious status of TyphaangustifoliaL. and where is it classified as such?


Is spiny amaranth native to the United States?


What is the common name of PyracanthacoccineaM. Roemer?


Does miconia pose any ecological threat?

Miconia calvescenscan be found in coastland, natural or planted forests, wetlands and disturbed areas. It is native to Central and Southern America.


Is cutleaf teasel native to the United States?


Is EugeniaunifloraL. native to the United States?


Is this plant invasive to the United States?


What is the growth habit of PopulustremuloidesMichx.?


What is the common name of Ampelopsisglandulosavar. brevipedunculata(Maxim.) Momiy.?


What is the growth habit of SalviaglutinosaL.?


What is the scientific name of floating primrose-willow?

Ludwigiapeploidesssp. glabrescens(Kuntze) P.H. Raven


Describe the appearance of Rhaponticumrepens(L.) Hidalgo?

Rhaponticum repensis a perennial forb that can grow to 3 ft. (1 m) in height. Stems originate from a basal rosette of leaves. The rosette leaves can be unlobed to very lobed and are 2-4 in. (5-10 cm) long.


Is oriental mustard native to the United States?


Describe the fruit of Ailanthusaltissima(P. Mill.) Swingle?

Fruit produced on female plants are tan to reddish, single winged and can be wind or water-dispersed.


What is the common name of Sechiumedule(Jacq.) Sw.?


What is the U.S. Department of Agriculture (USDA) plant symbol for shepherd's-purse?


Flowers usually solitary or few together, 2.4-3.5 in (6–9 cm) across and fragrant. The five petals vary in color from bright purplish-pink to white. There are 200–250 stamens per flower, and usually more than a hundred styles.


Describe the flowers of DactylisglomerataL.?

The flowers are yellow and occur in a panicle with spikelets in a compact cluster on one side of the rachilla. Flowers bloom from May to August.


Describe the flowers of GlechomahederaceaL.?

Flowering occurs March to July when tubular, lavender flowers appear in the axils of the leaves. Flowers are 0.4 in. (0.9 cm) long and come in clusters of two or more.


Describe the flowers of uruguayan pampas grass?

The inflorescence is a showy dense, feathery, 1-4 ft. (0.3-0.9 m), stiff, light violet to silvery white panicle.


The following species have been reported to be invasive in natural areas in the United States. Species native to the United States are included when they are invasive in areas well outside their known natural ranges, as a result of human activities.


Describe the appearance of CentaureavirgataLam.?

Centaurea virgatais a perennial forb that can grow 12-18 in. (30.5-45.7 cm) tall. This species is sometimes confused with diffuse knapweed (Centaurea diffusa), but can be distinguished fromCentaurea diffusaby the floral bracts. Bracts onCentaurea virgataare curved outward and are not laterally toothed.


What is the growth habit of garlic mustard?


Does slender russian thistle pose any ecological threat?

Salsola collinacan threaten native plant ecosystems. This species can reduce yield and quality of numerous agricultural crops. She depletes soil moisture, interferes with tillage operations, and serves as a shelter or food source to many insects, vertebrate pests, and crop diseases.Salsola collinais native to eastern Europe and eastern Asia.


Where can I view images of DipsacuslaciniatusL.?


Does Achyranthesjaponica(Miq.) Nakai pose any ecological threat?

AlthoughAchyranthes japonicaprefers partial sun and moist soils it can survive in shade and dry conditions. It readily invades bottomland forests, wooded riverbanks, roadsides, ditches and field edges.Achyranthes japonicacan form dense monocultures shading and outcompeting native plant species.


Is Arctothecacalendula(L.) Levyns native to the United States?


Is this plant invasive to the United States?


Describe the appearance of fivestamen tamarisk?

Tamarix chinensisis deciduous shrub that can grow up to 15 ft. (4.8 m) in height.


What is the scientific name of ngaio tree?


Describe the appearance of RobiniahispidaL.?

Robinia hispidais a deciduous shrub, to 8 ft. The multiple stems are erect and covered with dense bristles. Caution: All parts of this plant are poisonous. It is native to the southeastern United States.


Is alexandrian laurel native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for bee-bee tree?


Where can I view images of hedgehog dogtailgrass?


What is the common name of SalviapratensisL.?


Is boston ivy native to the United States?


Describe the flowers of grecian foxglove?

The single flowering stem is usually produced in the second year. The tubular bell shaped flowers ascend up the stem. They have a creamy-white color and purplish-brown netting as well as a long broad lip. The entire inflorescence is pubescent.


What is the common name of Cynodondactylon(L.) Pers?


What is the common name of BetulapendulaRoth?


Describe the flowers of canadian horseweed?

The inflorescence is a loose panicle. The numerous flower heads are very small, 0.08-0.16 in (2-4 mm) tall and 0.12-0.28 in (3-7 mm) wide. The rays are white or purplish and very small, only reaching 0.02-0.04 in (0.5-1.0 mm) in length.


Is Zelkovaserrata(Thunb.) Makino native to the United States?


Is Toxicodendronradicans(L.)Kuntze native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for stringy stonecrop?


What is the U.S. Department of Agriculture (USDA) plant symbol for beach vitex?


What is the invasive/noxious status of CallitrichestagnalisScop. and where is it classified as such?

Potentially Invasive, Prohibited (Connecticut)


Is rock dandelion native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for black bamboo?


What is the scientific name of black bindweed?

Polygonumconvolvulusvar. subulatumLej. & Court.


Is this plant invasive to the United States?


Is RosalucieaeFranch. & Rochebr. ex Crép. native to the United States?


What is the invasive/noxious status of PastinacasativaL. and where is it classified as such?

Invasive  (Michigan), Restricted (Wisconsin)


Is woodbine native to the United States?


Is GeraniumpurpureumVill. native to the United States?


Where can I view images of HeracleummantegazzianumSommier & Levier?


Describe the fruit of Bellardiatrixago(L.) All?

Fruits are ovoid capsules, containing many small, oblong, rigid seeds that can be 0.02-0.04 in. (0.5-1 mm) long


What is the growth habit of dixie silverback fern?


Describe the foliage of Oxalispes-capraeL.?

The trifoliate (clover-like) leaves arise from an enlarged basal stem tip, and are arranged in a loose basal rosette. Petioles are usually less than 4.7 in. (12 cm) long. Each leaflet measures less than 1.4 in. (3.5 cm) in length and are often spotted with hairy lower surfaces.


What is the common name of LactucacanadensisL.?


Is redfruit passionflower native to the United States?


Does Glyceriamaxima(Hartman) Holmb. pose any ecological threat?

Glyceria maximaoccurs in sunny to semi-shady wetlands, where it can form dense impenetrable monocultures that crowd out native species. It is native to northern Eurasia and was first found in North America in 1940 on the edge of Lake Ontario.


What is the common name of PopulustremuloidesMichx.?


What is the growth habit of bristle basketgrass?


Fruits are round, dark purple, and 0.25 in. (7 mm) in diameter.


Is RaphanusraphanistrumL. native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for Brachypodiumdistachyon(L.) Beauv.?


What is the U.S. Department of Agriculture (USDA) plant symbol for ArctiumminusBernh.?


Leaves are whorled, very narrow, up to 1.5 in. (3.8 cm) long, covered in short hairs, pointed, and found in groups of 8 to 12 leaves.


Is HederahelixL. native to the United States?


Is croftonweed native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for DelaireaodorataLem?


Does brittleleaf naiad pose any ecological threat?

Najas minorhas the ability to form thick stands that can cover or clog a lake or stream. This plant is extremely brittle, which allows it to fragment and get moved via boats, waterfowl and river channels. Waterfowl readily eat and move this plant from waterbody to waterbody. In North Carolina, this plant is reported to out-compete other exotics such asHydrilla verticillata. This plant needs to be watched, contained or removed if found.


Is big periwinkle native to the United States?


What is the growth habit of ChrysophyllumoliviformeL.?


What is the scientific name of osage-orange?


Fruits are narrow seed pods that are 2-4 in. (5-10 cm) long and contain more than 120 seeds.


Is this plant invasive to the United States?

The following species have been reported to be invasive in natural areas in the United States. Species native to the United States are included when they are invasive in areas well outside their known natural ranges, as a result of human activities.


What is the invasive/noxious status of PanicumrepensL. and where is it classified as such?


What is the scientific name of canistel?


What is the growth habit of BromussecalinusL.?


The flowering stem develops in the second year, from about 3.3-6.6 ft. (1-2 m) tall. The flowers are arranged in a showy, terminal, elongated cluster, and each flower is tubular and pendent. The flowers are typically purple but some plants, under cultivation, may be pink, rose, yellow, or white. The corolla is spotted inside the bottom of the tube. Flowers in early summer.


Is Malustoringo(Siebold) Siebold ex de Vriese native to the United States?


Where can I view images of Digitariaciliaris(Retz.) Koel?


Is Oenanthejavanica(Blume) DC. native to the United States?


Is pearl millet native to the United States?


Does winged burning bush pose any ecological threat?

Euonymus alatuscan invade not only a variety of disturbed habitats including forest edges, old fields, and roadsides but also in undisturbed forests. Birds and other wildlife eat and disperse the fruit. Once established, it can form dense thickets, displacing native vegetation. It is native to northeastern Asia and was first introduced into North America in the 1860s for ornamental purposes. This plant is still sold and planted as an ornamental.


Where can I view images of CuscutajaponicaChoisy?


Is GalinsogaparvifloraCav. native to the United States?


What is the growth habit of Centromadiapungensssp. pungens(Hook. & Arn.) Greene?


What is the U.S. Department of Agriculture (USDA) plant symbol for twoflower passionflower?


Is ElaeagnusangustifoliaL. native to the United States?


Where can I view images of RosarubiginosaL.?


What is the growth habit of yellow woodsorrel?


What is the U.S. Department of Agriculture (USDA) plant symbol for edible fig?


What is the growth habit of european crabapple?


Flowering occurs in late summer to fall, when small, pink or lilac flowers occur in clusters, either terminally or in leaf axils.


Does Leucaenaleucocephala(Lam.) de Wit pose any ecological threat?

In areas whereLeucaena leucocephalais considered an invasive weed, it will form dense thickets and displace the native vegetation. Disturbed, cleared areas, coastal strands, outskirts of forests and canopy gaps are some locations regularly invaded byLeucaena leucocephala.


What is the U.S. Department of Agriculture (USDA) plant symbol for mourningbride?


What is the common name of Salpichroaoriganifolia(Lam.) Thell.?


What is the U.S. Department of Agriculture (USDA) plant symbol for UtriculariainflataWalter?


Describe the foliage of SalsolatragusL.?

Leaves are alternate and narrow. Upper leaves have a sharp point at the apex and are 1.3-2 in. (3.3-5.1 cm) long.


What is the U.S. Department of Agriculture (USDA) plant symbol for ScolymushispanicusL.?


What is the common name of ApiumgraveolensL.?


Is false strawberry native to the United States?


Is coulter pine native to the United States?


Where can I view images of CarexpendulaHuds.?


Describe the foliage of Akebiaquinata(Houtt.) Dcne.?

The leaves are palmately compound with up to five, 1.5-3 in. (2.5-7.6 cm) long, oval leaflets.


What is the scientific name of jamaica feverplant?


What is the growth habit of toringo crab?


Describe the appearance of cultivated knotweed?

Persicaria wallichiiis a perennial plant that can grow from 23.6-78.7 in. (60-200 cm) tall.


What is the U.S. Department of Agriculture (USDA) plant symbol for Viciasativassp. nigra(L.) Ehrh.?


Does ivy gourd pose any ecological threat?

Coccinia grandisvines grow over and smother vegetation, and cover fences and power lines. Infestations ofCoccinia grandisthreatens both natural and managed areas. It is difficult to control because plants regrow from deep roots, even after treatment with herbicide. It is native to Africa and Asia.


Describe the foliage of common chickweed?

Leaves are opposite, oval, to 0.8 in. (2 cm) long and pointed at the tip. Older leaves are petiolate.


What is the U.S. Department of Agriculture (USDA) plant symbol for QuercusroburL.?


What is the U.S. Department of Agriculture (USDA) plant symbol for CentaureanigraL.?


Is Kalopanaxseptemlobus(Thunb.) Koidz native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for houndstongue?


What is the U.S. Department of Agriculture (USDA) plant symbol for SonchusL.?


Does Ludwigiapeploides(Kunth) Raven pose any ecological threat?

L. peploidesforms dense, fast-growing, floating mats that can displace native aquatic plants, wetland grasses, lower dissolved oxygen and pH of the water, reduce water quality for wildlife and increase sedimentation.


What is the common name of PhyllanthusurinariaL.?


What is the U.S. Department of Agriculture (USDA) plant symbol for Eleusineindica(L.) Gaertn.?


Where can I view images of longspine sandbur?


What is the scientific name of smooth barley?


Does Caulerpataxifolia(Vahl) C. Agardth pose any ecological threat?

The non-invasive form ofCaulerpa taxifoliais native to the Caribbean, Indo-Pacific and the Red Sea. A clone of the species was cultured for display at the Stuttgart Aquarium in Germany and provided to aquariums in France and Monaco. It either escaped from or was released from an aquarium into the Mediterranean Sea in 1984 where it spread rapidly, densely blanketing thousands of acres of underwater surfaces. Populations of the invasive Mediterranean aquarium strain were discovered in 2000 in California and threaten native kelp and eelgrass meadows. The invasive clone is genetically distinct from the native (DNA tests are necessary to distinguish them) and it tolerates cooler water, grows more rapidly, and grows at greater depth than the native species. Once established, this alga becomes the dominant species, altering native algal and marine animal communities. Infestations negatively affect tourism, commercial fishing, and recreational activities. The invasive clone was designated in 1999 as a prohibited species under the Federal Noxious Weed Act. Its current distribution includes Croatia, France, Italy, Monaco, Spain (Mediterranean Sea, Adriatic Sea), Australia and the United States.


Does shrubby lespedeza pose any ecological threat?

Lespedeza bicoloris an extremely aggressive invader of open areas, forming dense thickets, which displace native vegetation. Native to Asia and introduced into the United States in the late 1800s, it has been widely planted for wildlife habitat, especially for northern bobwhite quail.


Is annual ryegrass native to the United States?


Where can I view images of osage-orange?


Is AlhagimaurorumMedik native to the United States?


What is the invasive/noxious status of ArtemisiavulgarisL. and where is it classified as such?

Invasive (Connecticut), Prohibited (New York)


Is this plant invasive to the United States?


Describe the flowers of showy fly honeysuckle, bell's honeysuckle?

Flowering occurs from May through June. Paired flowers appear in the axils of the leaves. Flowers are usually pink and often turn yellow with age.


Describe the appearance of EhrhartacalycinaSm.?

Ehrharta calycinais a perennial grass that can grow up to 4 ft. (1.2 m) tall.


Does CentaureajaceaL. pose any ecological threat?

Centaurea jaceais an aggressive invader preferring moister, cooler conditions than other knapweed species. It can tolerate partial shade. It can invade grasslands, open woods, meadows, pastures, woodland clearings, and cutover areas of forest crowding out native plants or forage.Centaurea jaceais native to Europe.


What is the U.S. Department of Agriculture (USDA) plant symbol for white leadtree?


Describe the foliage of SaponariaofficinalisL.?

The plants possesses leafy, unbranched stems (often tinged with red). It grows in patches, attaining a height of 27.6 in. (70 cm). The broad, lanceolate, sessile leaves are opposite and between 1.6-4.7 in. (4-12 cm) long.


Where can I view images of CitharexylumcaudatumL.?


The following species have been reported to be invasive in natural areas in the United States. Species native to the United States are included when they are invasive in areas well outside their known natural ranges, as a result of human activities.


What is the scientific name of oriental lady's thumb?


Is jamaica feverplant native to the United States?


What is the common name of TamarixchinensisLour.?


What is the growth habit of Clerodendrumindicum(L.) Kuntze?


What is the scientific name of hyssop loosestrife?


Where can I view images of brazilian peppertree?


Green oval fruit ripen to black drupes which each contain a single seed. Fruit ripens in fall.


Describe the appearance of CentaureadiffusaLam.?

Centaurea diffusais a biennial, annual, or short-lived perennial that is 8-40 in. (20.3-101.6 cm) tall.


Where can I view images of peruvian groundcherry?


Describe the foliage of canadian horseweed?

The alternate leaves are elliptic, narrowly lanceolate, or narrowly oblanceolate, 0.8-3.1 in (2-8 cm) long and 0.08-0.31 in (2-8 mm) wide, with ciliate-serrate leaf margins. The leaves are sessile or almost sessile and are spaced closly together along the stem, appearing almost whorled.


What is the U.S. Department of Agriculture (USDA) plant symbol for Asparagusasparagoides(L.) Druce?


Is this plant invasive to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for Pinuscontortavar. latifoliaEngelm. ex S. Watson?


What is the common name of IsatistinctoriaL.?


Is saltmeadow cordgrass native to the United States?


Is LepidiumlatifoliumL. native to the United States?


What is the invasive/noxious status of hydrilla and where is it classified as such?

Category 1 (Alabama), Invasive (Delaware), Invasive (DOC) (Missouri), Invasive (North Carolina), Invasive, Prohibited (Connecticut), Noxious (United States), Prohibited (Minnesota), Prohibited (New York), Prohibited (Wisconsin), Watch List, Prohibited (Michigan)


Describe the foliage of MyriophyllumheterophyllumMichx.?

The submerged leaves are finely dissected, whorled, reddish/greenish-brown, and 0.5-2.5 in. (1.3-6.4 cm) long. The emergent leaves are small, oval, bright green, whorled and up to 0.25 in. (0.6 cm) wide. Emergent leaves stand 6-8 in. (15.2-20.3 cm) out of the water and may not be apparent until late summer.


What is the invasive/noxious status of Hygrophilapolysperma(Roxb.) T. Anders. and where is it classified as such?

Noxious (United States), Prohibited (Minnesota), Prohibited (Wisconsin)


What is the growth habit of PinusstrobusL.?


Where can I view images of bay biscayne creeping-oxeye?


What is the scientific name of texas blueweed?


Does SolanumtampicenseDunal pose any ecological threat?

Solanum tampicense, being tolerant of full sun and full shade, can invade many types of wetland ecosystems such as cypress swamps and river edges. It is capable of forming extensive, dense stands that displace native vegetation. It is native to the West Indies and Central America. It was accidentally introduced into Florida. The ability ofSolanum tampicenseto form dense thickets that are difficult for other species to penetrate suggests this noxious weed has the potential to invade and alter many of Florida’s wetland habitats as well as impede access to and use of water resources (Fox and Wigginton, 1996; Fox and Bryson, 1998)


Is jerusalem artichoke native to the United States?


What is the scientific name of onerow yellowcress?


What is the growth habit of Buglossoidesarvensis(L.) I.M. Johnston?


What is the common name of Asystasiagangetica(L.) T. Anders?


Describe the foliage of jointed goatgrass?

The leaves are alternate, up to 0.5 in. (1.2 cm) wide with thin hairs along the margins, sheath openings and auricles. The ligule is short and membranous.


Is this plant invasive to the United States?


What is the scientific name of intermediate wheatgrass?

Thinopyrumintermedium(Host) Barkworth & D.R. Dewey


Where can I view images of european red raspberry?


What is the U.S. Department of Agriculture (USDA) plant symbol for piedmont bedstraw?


What is the growth habit of CarexkobomugiOhwi?


Does Nymphoidespeltata(S.G. Gmel.) Kuntze pose any ecological threat?

AlthoughN. peltatahas the potential to shade and crowd out native aquatic plants. In warmer areas it has formed large stands that can block waterways.N. peltatais still commonly sold as a plant for water gardens, and can be carelessly disposed of into local waterbodies. It prefers the still waters found in lakes and ponds. It is often found in water gardens, which are the source of many of its introductions.


Is threeflower beggarweed native to the United States?


Describe the fruit of NymphaeaodorataAit.?

After flowering, the stalk will contract and create a globe shaped fruit with several seeds that matures under the water then the fruit will break away and float to the surface of the water to be eaten by wildlife.


What is the U.S. Department of Agriculture (USDA) plant symbol for BuddlejamadagascariensisLam.?


Describe the flowers of lilac chastetree?

Flowers are blue, lavender or white, about 1 in. (2.5 cm) across, five petals blunt at tip, arranged in spiral. It blooms in springtime.


Describe the foliage of creeping bellflower?

The rough, serrate leaves are alternate with hairs on the underside. Basal leaves are heart-shaped and 1-3 in (cm) long with long petioles. Upper leaves are narrow, lance-shaped and with little to no petiole. Leaves are reduced to bracts in inflorescence.


What is the U.S. Department of Agriculture (USDA) plant symbol for st. augustinegrass?


What is the common name of Landoltiapunctata(G.F.W. Mey.) D.H. Les & D.J. Crawford?


Fruit is a drupe that is ovoid, 0.8-1 in. (2-2.5 cm) long, and green to blackish violet in color. The edible fruit surrounds the dark violet round seed.


What is the U.S. Department of Agriculture (USDA) plant symbol for sericea lespedeza?


Describe the fruit of black dog-strangling vine, black swallowwort?

Fruit are pods, similar to milkweed pods, which are slender, 2-3 in. (5.1-7.6 cm) long and split to reveal small seeds with tufts of white hairs. The hairs allow the seeds to be readily dispersed by wind. Plants have rhizomes that sprout new plants.


What is the growth habit of LoniceracaprifoliumL.?


What is the U.S. Department of Agriculture (USDA) plant symbol for Centranthusruber(L.) DC.?


Describe the flowers of HeracleummantegazzianumSommier & Levier?

Heracleum mantegazzianumflowers from June-July. The inflorescence has many white florets (with petals about 0.4 in. [1 cm]) that form a flat-topped umbel. Each inflorescence can have a diameter of up to 2.5 ft. (0.72 m).


What is the U.S. Department of Agriculture (USDA) plant symbol for chayote?


What is the growth habit of lehmann lovegrass?


Describe the foliage of rush skeletonweed?

Coarse-looking, multiple stems appear leafless due to inconspicuous leaves and arise from a basal rosette of sharply lobed leaves. The lower 4-6 in. (10.2-15.2 cm) of stem is covered with coarse brown hairs. Both stem and leaves produce a milky sap when broken.


Where can I view images of AraujiasericiferaBrot.?


Describe the flowers of CaraganaarborescensLam.?

Flowers are yellow, tubular, and can be found in groups of up to four flowers. The blooming period occurs from May to June.


Where can I view images of beach wormwood?


Is Cayratiajaponica(Thunb.) Gagnepain native to the United States?


Is ArundodonaxL. native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for japanese ardisia?


What is the invasive/noxious status of mulberryweed and where is it classified as such?


What is the growth habit of BerberisdarwiniiHook.?


Is this plant invasive to the United States?

The following species have been reported to be invasive in natural areas in the United States. Species native to the United States are included when they are invasive in areas well outside their known natural ranges, as a result of human activities.


Describe the flowers of HieraciumglomeratumFroel.?

The small flower heads are often held in an umbel. The yellow ray flowers resemble dandelions.


Where can I view images of PanicumantidotaleRetz.?


What is the growth habit of GenistatinctoriaL.?


What is the U.S. Department of Agriculture (USDA) plant symbol for kangaroothorn?


Describe the fruit of ArctiumminusBernh.?

One plant typically produces 15,000 seeds. It reproduces by seeds.


Is RanunculusarvensisL. native to the United States?


What is the growth habit of smallflower tamarisk?


What is the U.S. Department of Agriculture (USDA) plant symbol for colocynth?


What is the growth habit of cypress spurge?


Describe the appearance of standish's honeysuckle?

Lonicera standishiiis an upright, shallow-rooted deciduous shrub that grows up to about 8 ft (2.4 m) tall. It has a solid, white pith. Branches are covered with stiff reddish-brown hairs. It has pale, shredding bark.L. standishiiis native to temperate Asia.


What is the common name of HouttuyniacordataThunb.?


What is the growth habit of common periwinkle?


What is the common name of CyperushaspanL.?


What is the U.S. Department of Agriculture (USDA) plant symbol for perilla mint?


Does EchiumplantagineumL. pose any ecological threat?

Echium plantagineumcan be found in pastures, vacant lands, and roadsides. It is native to Mediterranean and west Europe.


What is the common name of CerastiumtomentosumL.?


Describe the foliage of yellow groove bamboo?

The lanceolate, pointed, olive-green leaves are up to 7 in. long. Leaves are hairy at the bases and generally evergreen.


Does field brome pose any ecological threat?

Bromus arvensiscan be found on a wide variety of soils that include sand, silt, and clay, but thrives on fine-textured soils. Waste areas, disturbed sites, roadsides, pastures, rangelands, and wheat fields are areas whereBromus arvensiscan establish. The plant is a common component of many mixed prairie communities. It is an aggressive species that out-competes desirable vegetation for water and soil nutrients, thus reducing plant biodiversity. Forage production of perennial grasses and grazing performance is also reduced in areas infested withBromus arvensis.


Is etruscan honeysuckle native to the United States?


Does LespedezabicolorTurcz. pose any ecological threat?

Lespedeza bicoloris an extremely aggressive invader of open areas, forming dense thickets, which displace native vegetation. Native to Asia and introduced into the United States in the late 1800s, it has been widely planted for wildlife habitat, especially for northern bobwhite quail.


What is the invasive/noxious status of Puerariamontana(Lour.)Merr. and where is it classified as such?

Category 1 (Alabama), Watch List (Michigan)


What is the growth habit of AcerginnalaMaxim.?


Describe the foliage of CuscutajaponicaChoisy?

The many-branching stems are fleshy, circular, and pale yellow with red spots and striations. Leaves are minute and scale-like.


Is plumeless thistle native to the United States?


Is this plant invasive to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for Plucheaindica(L.) Less.?


What is the U.S. Department of Agriculture (USDA) plant symbol for european spindletree?


What is the scientific name of red mangrove?


What is the U.S. Department of Agriculture (USDA) plant symbol for PolygonumargyrocoleonSteud. Ex Kunze?


Does twoleaf watermilfoil pose any ecological threat?

Myriophyllum heterophyllumis native to the southern United States, but is considered invasive in much of the northeast. This species is listed as endangered or threatened in three states (Kentucky, Ohio, and Pennsylvania).


Is thymeleaf sandwort native to the United States?


What is the growth habit of EgeriadensaPlanch.?


Where can I view images of bristly foxtail?


What is the common name of Centromadiapungensssp. pungens(Hook. & Arn.) Greene?


Where can I view images of Cerastiumfontanumssp. vulgare(Hartman) Greuter & Burdet?


What is the growth habit of council tree?


What is the scientific name of molassesgrass?


Describe the foliage of coco yam, wild taro?

Leaves, supported by 3 ft. (1 m) long petioles, are arrowhead shaped, up to 2 ft. (0.6 m) long and 1.6 ft. (0.5 m) wide, peltate and velvety on the upper surface.


Does Torilisjaponica(Houtt.) DC. pose any ecological threat?

Torilis japonicathreatens woodlands and savannas. Spreading hedge parsley (Torilis arvensis) is very similar and invasive.


Is Synedrellanodiflora(L.) Gaertn. native to the United States?


What is the scientific name of garlic mustard?

Alliariapetiolata(Bieb.) Cavara & Grande


Is this plant invasive to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for winter vetch?


What is the growth habit of Morellafaya(Ait.) Wilbur?


Describe the appearance of common barberry?

Berberis vulgarisis a deciduous shrub that can reach 13 ft. (4 m) in height. Arching branches which come into contact with the soil can produce new plants.


Describe the foliage of peruvian peppertree?

Leaves are pinnately compound, linear, 6-12 in. (15.2-30.5 cm) long with 2.5 in. (6.4 cm) long, sessile, lanceolate to linear, entire leaflets.


Leaves are opposite, dark green, elliptic to obovate, 23.6-27.6 in. (60-70 cm) long with 3 prominent veins, rounded base, and entire or slightly toothed margins.


Where can I view images of Mirabilisnyctaginea(Michx.) MacM.?


What is the growth habit of AgrostisavenaceaJ.F. Gmel.?


Describe the fruit of Mahoniabealei(Fortune) Carr.?

The fruits are green berries, about 0.5 in. (1.3 cm) long, that turn bluish black with a grayish bloom. Fruits hang in grapelike clusters.


Where can I view images of Rhaponticumrepens(L.) Hidalgo?


The following species have been reported to be invasive in natural areas in the United States. Species native to the United States are included when they are invasive in areas well outside their known natural ranges, as a result of human activities.


Is DrabavernaL. native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for strawberry raspberry?


What is the U.S. Department of Agriculture (USDA) plant symbol for AndropogonvirginicusL.?


What is the U.S. Department of Agriculture (USDA) plant symbol for HelianthustuberosusL.?


Where can I view images of CenchrusciliarisL.?


Is african cornflag native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for Luzulaluzuloides(Lam.) Dandy & Wilmott?


Describe the fruit of CommelinacommunisL.?

Fruit are two-valved capsules that are elliptic from 2-3 in. (5–7 mm). The two seeds in each valve are brown-yellow, 0.08-0.12 in. (2–3 mm) long, irregularly pitted, flat-sided, and truncate at one end.


Describe the foliage of Sphaerophysasalsula(Pallas) DC.?

Leaves are compound with 15-23 leaflets. Leaflets are ovate, 0.2-0.75 in. (0.5-2 cm) long with short, white hairs on the lower surface.


What is the growth habit of chinese elm?


What is the growth habit of creeping waterprimrose?


Is CyperusiriaL. native to the United States?


What is the common name of ToonaciliataRoemer?


Is SalixpentandraL. native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for PistiastratiotesL.?


Describe the appearance of Caulerpataxifolia(Vahl) C. Agardth?

Caulerpa taxifoliais an invasive marine alga that is often referred to as "Killer Algae".


What is the U.S. Department of Agriculture (USDA) plant symbol for grecian foxglove?


What is the invasive/noxious status of bushkiller and where is it classified as such?

Invasive (North Carolina), Watch List (Alabama)


Where can I view images of SagittariagramineaMichx.?


Describe the foliage of SpartinaanglicaC.E. Hubbard?

Leaves are 13.8-17.7 in. (35-45 cm) long, linear, flat, smooth, firm, green-grey in color with a fine apex, pointed tips, and entire margins. Where the leaf meets the sheath is a dense row of hair.


What is the U.S. Department of Agriculture (USDA) plant symbol for Kummerowiastriata(Thunb.) Schindl.?


Is slender meadow foxtail native to the United States?


Is this plant invasive to the United States?


Describe the fruit of australian saltbush?

Fruits are 0.16-0.24 in. (4-6 mm) long, sessile, diamond-shaped, and red when mature. Seeds are black and 0.06-0.07 in. (1.5 -1.7 mm) long.


What is the growth habit of surinam cherry?


Describe the flowers of purple crown-vetch?

Flowering occurs in the summer. The pea-like, fragrant flowers are white to pink to purple and resemble a large clover flower because they are found in long-stalked clusters.


Is chinese catalpa native to the United States?


Leaves are whorled, dark green, 1-5 in. (2.5-12.7 cm) long, thick, smooth, and shiny. Stem bark is gray to yellowish in color.


Where can I view images of creeping yellow loosestrife, creeping jenny?


What is the growth habit of white leadtree?


What is the growth habit of turkeyberry?


Is jersey cudweed native to the United States?


Where can I view images of PanicumrepensL.?


What is the U.S. Department of Agriculture (USDA) plant symbol for douglas-fir?


What is the growth habit of CitharexylumspinosumL.?


What is the common name of Glyceriamaxima(Hartman) Holmb.?


What is the common name of StachytarphetaurticifoliaSims?


Does ArctiumminusBernh. pose any ecological threat?

Arctium minuscan become a problematic invader of pastures, hay fields and open prairie ecosystems. It acts as a secondary host for pathogens, such as powdery mildew and root rot, which affect economically important plants.Arctium minusis native to Europe and came to the United States via accidental introduction. Indirectly affects the development of economically important plants by hosting powdery mildew and root rot. Reduces the value of sheep’s wool due to the seed heads entangling in it. It is responsible for tainting milk products if grazed in large quantities.


What is the growth habit of AbrusprecatoriusL.?


Where can I view images of Hygrophilapolysperma(Roxb.) T. Anders.?


Is tall oatgrass native to the United States?


What is the scientific name of cup rosinweed?


Is TerminaliamuelleriBenth. native to the United States?


Is this plant invasive to the United States?


Describe the foliage of tussock paspalum?

Leaves are 5.9-15.7 in. (15-40 cm) long, 0.2-0.3 in. (5-8 mm) wide and glabrous. Leaf sheaths are keeled.


What is the growth habit of border privet?


What is the U.S. Department of Agriculture (USDA) plant symbol for ceara rubbertree?


What is the U.S. Department of Agriculture (USDA) plant symbol for CardariaDesv.?


What is the growth habit of mile-a-minute?


Is common buckthorn, european buckthorn native to the United States?


What is the common name of Sesbaniavesicaria(Jacq.) Ell.?


What is the scientific name of longfruited primrose-willow?


Is spring whitlowgrass native to the United States?


Describe the appearance of Cirsiumvulgare(Savi) Ten.?

Cirsium vulgareis an annual or biennial, herbaceous plant that invades disturbed areas throughout the United States. The spiny, spreading, winged stems are up to 7 ft. (2.1 m) tall.


Does SolanumrostratumDunal pose any ecological threat?

S. rostratumprefers moist soils and areas like pastures, waste ground, and roadsides. Although it is native to most of North America, it is considered a noxious weed in some states.


What is the U.S. Department of Agriculture (USDA) plant symbol for Cinnamomumburmanni(Nees & Th. Nees) Nees ex Blume?


Is longstalk cranesbill native to the United States?


Leaves are alternate, bluish to gray green in color, 1-4 in. (2.5-10.2 cm) long, pointed, and elliptic to oval shaped.


Does black dog-strangling vine, black swallowwort pose any ecological threat?

Vincetoxicum nigrumreadily invades upland areas. It tolerates a wide range of light and moisture conditions and can be found invading a wide variety of upland habitat types. It is native to Europe. The history of its introduction is uncertain, but it may have escaped from a botanical garden.


Is RosalaevigataMichx. native to the United States?


Does Loniceramaackii(Rupr.) Herder pose any ecological threat?

Lonicera maackiican form large stands that prevent native shrubs and herbaceous understory plants from growing. The fruits persist on the branches into the winter, when birds feed on them. In the spring,Lonicera maackiiis one of the first plants to leaf out, giving it a competitive advantage. This shrub can bear fruit when it is as young as 3 to 5 years old. ThoughLonicera maackiihas not yet become a major problem in New England, it is very troublesome in the southern and midwestern parts of the country.


Is squirreltail fescue native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for spiny emex?


Does EuphorbiaesulaL. pose any ecological threat?

Large infestations ofEuphorbia esulagive the landscape a yellowish tinge due to the yellow bracts. Leafy spurge invades prairies, pastures, and other open areas. It is a major pest of national parks and nature preserves in the western United States. It can completely overtake large areas of land and displace native vegetation. This plant is native to Europe and was introduced accidentally into North America in the early 1800s as a seed contaminate.


Describe the appearance of Microstegiumvimineum(Trin.) A. Camus?

Microstegium vimineumis a delicate, sprawling, annual grass that is 0.5-3.5 ft. (0.2-1.1 m) in height. The stems can root at the nodes.


What is the common name of Neonotoniawightii(Wight & Arn.)?


Is golden pothos native to the United States?


Is banana passionflower native to the United States?


Is brazilian peppertree native to the United States?


Is Mahoniabealei(Fortune) Carr. native to the United States?


Describe the flowers of LactucaserriolaL.?

In the mid-to-late summer, 0.5 in. (1.3 cm) wide, yellow flowers develop in a branched inflorescence at the apex of the stem.


Where can I view images of ViburnumplicatumThunb.?


Describe the flowers of Ailanthusaltissima(P. Mill.) Swingle?

Species is dioecious and flowering occurs in early summer when large clusters of yellow flowers develop above the foliage.


Where can I view images of broom teatree?


What is the U.S. Department of Agriculture (USDA) plant symbol for myrtle spurge?


Is this plant invasive to the United States?

The following species have been reported to be invasive in natural areas in the United States. Species native to the United States are included when they are invasive in areas well outside their known natural ranges, as a result of human activities.


Is slender russian thistle native to the United States?


What is the common name of EucalyptuscamaldulensisDehnhardt?


Describe the appearance of dwarf honeysuckle?

Lonicera xylosteumis a perennial shrub that can reach 8-10 ft. (2.4-3 m) tall.


What is the growth habit of LotuscorniculatusL.?


Is winter vetch native to the United States?


What is the growth habit of Cayratiajaponica(Thunb.) Gagnepain?


Is AnthoxanthumodoratumL. native to the United States?


Where can I view images of Callunavulgaris(L.) Hull?


What is the U.S. Department of Agriculture (USDA) plant symbol for GeraniumcolumbinumL.?


What is the U.S. Department of Agriculture (USDA) plant symbol for Chamaecristanictitans(L.) Moench?


Is Solenostemonscutellarioides(L.) Codd native to the United States?


Is lesser celandine, fig buttercup native to the United States?


Where can I view images of AdiantumhispidulumSw.?


What is the common name of PrunusspinosaL.?


What is the scientific name of evergreen clematis?


Where can I view images of Myriophyllumaquaticum(Vell.) Verdc.?


What is the invasive/noxious status of Taeniatherumcaput-medusae(L.) Nevski and where is it classified as such?


What is the growth habit of hairy fleabane?


Describe the fruit of canary island st. johnswort?

Fruits are dry capsules that release hundreds of very small seeds that are 0.04 in. (1 mm) in length from July through August.


Fruits are green, red or greenish-red, and is about 0.12 in. (3 mm) in diameter. The fruits are divided into three parts and their surface has raised scales.


Is norway maple native to the United States?


Is this plant invasive to the United States?


Is HaematoxylumcampechianumL. native to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for turnipweed?


Describe the flowers of mile-a-minute vine, asiatic tearthumb?

Small, white, inconspicuous flowers arise from the ocreae.


Describe the flowers of kahila garland-lily?

Hedychium gardnerianumhas huge inflorescences that contains bright yellow blooms with red-orange stamens. It has a delicate fragrance. Flowering will occur from July to October.


What is the common name of PinuspineaL.?


What is the growth habit of colombian bluestem?


What is the common name of Livistonachinensis(Jacq.) R. Br. ex Mart.?


What is the growth habit of RosamultifloraThunb.?


What is the scientific name of french rose?


Where can I view images of roundleaf toothcup?


What is the U.S. Department of Agriculture (USDA) plant symbol for lesser hawkbit?


Describe the appearance of SolanumdulcamaraL.?

Solanum dulcamarais a perennial vine or scrambling shrub with slender stems that can reach up to 6.6 ft. (2 m) tall, either erect or clambering.


What is the growth habit of waterpurslane?


Describe the flowers of largeleaf lantana?

Flowers are colorful, tubular, 4-petaled and occur nearly all year long. Flowers can be orange, pink or white with different colored flowers occurring in the same cluster.


Where can I view images of Cenchrusalopecuroides(L.) Thunb.?


What is the scientific name of tatarian honeysuckle?


Describe the foliage of AmbrosiaartemisiifoliaL.?

Stems and leaves are blue-green and covered with fine hairs. Leaves divided and bottom sides covered in fine hairs, giving a gray appearance.


What is the growth habit of jamaica feverplant?


What is the U.S. Department of Agriculture (USDA) plant symbol for ArtemisiaabsinthiumL.?


Is this plant invasive to the United States?


What is the U.S. Department of Agriculture (USDA) plant symbol for molassesgrass?


Does CarduusacanthoidesL. pose any ecological threat?

Carduus acanthoidesinfests open, disturbed areas such as pastures, roadsides, and railroad right-of-ways. It can form thick stands that reduce the forage potential of pastures and suppress the growth of desirable vegetation.


Describe the appearance of CelastrusorbiculatusThunb.?

Celastrus orbiculatusis a perennial deciduous, climbing, woody vine that can grow to lengths of 60 ft. (18.3 m) and up to 4 in. (10 cm) in diameter. The striated bark is brown to dark brown. The smooth glabrous twigs can range from light gray to dark brown in color.


Is queen-of-the-meadow native to the United States?


Where can I view images of meadow salsify?


What is the U.S. Department of Agriculture (USDA) plant symbol for RumexobtusifoliusL.?


What is the common name of EchiumcandicansL. f.?


What is the common name of PaspalumdilatatumPoir.?