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FamilyScientific Name Common NameHabitatDistributionImage
AmaranthaceaeAmaranthus albusTumbleweed AmaranthDisturbed areas, agricultural fields.Central North America, the native distribution difficult to determine.image of plant
AmaranthaceaeAmaranthus arenicolaSandhill AmaranthSandhills, dunes, other sandy areas; eastwards adventive in disturbed areas.Native from IA, SD, and WY south to TX, NM, and Mexico, adventive in a broader range (the boundaries of native and adventive hypothetical).image of plant
AmaranthaceaeAmaranthus australisSouthern Water-hemp, CarelessTidal marshes, freshwater wetlands (swamps, strands, sloughs, marshes), ditches, disturbed areas.E. NC, TN, LA, and TX south into West Indies, Gulf Coast of Mexico (CAM, ROO, TAB, TAM, VER), and n. South America; perhaps adventive in some of our range, from an original distribution on the Gulf Coast, in FL, and southward into the New World tropics.image of plant
AmaranthaceaeAmaranthus blitoidesMatweed Amaranth, Prostrate PigweedDisturbed areas, roadsides.Sc. United States and Mexico.image of plant
AmaranthaceaeAmaranthus blitum ssp. emarginatusPurple Amaranth, Livid AmaranthDisturbed habitats.Native of the tropics. First reported from South Carolina by Hill & Horn (1997). Reported for greenhouses and outdoor areas for c. KY (Adanick & Medley 2020).image of plant
AmaranthaceaeAmaranthus blitum ssp. pseudogracilisPurple Amaranth, Livid AmaranthDisturbed habitats.Native of the tropics.
AmaranthaceaeAmaranthus cannabinusSalt-marsh Water-hempSalt, brackish, and freshwater tidal marshes, especially along the banks of tidal guts.ME south to ne. FL (Duval County).image of plant
AmaranthaceaeAmaranthus caudatusLove-Lies-Bleeding, Tasselflower, Purple AmaranthDisturbed areas, cultivated as an ornamental.Native of Andean South America. Cultivated and rarely escaped or persistent, as in TN (Chester, Wofford, & Kral 1997), and scattered in PA (Rhoads & Klein 1993).image of plant
AmaranthaceaeAmaranthus crassipes var. crassipesSpreading AmaranthShores and wet areas.Probably introduced from tropical America.image of plant
AmaranthaceaeAmaranthus crispusCrisp-leaved AmaranthDisturbed areas, especially around seaports.Native of South America. Reported for VA by Massey (1961), but no documentation is known.
AmaranthaceaeAmaranthus cruentusRed Amaranth, Blood Amaranth, Purple AmaranthDisturbed areas, old gardens.Native of Central America.image of plant
AmaranthaceaeAmaranthus deflexusLarge-fruit Amaranth, Argentine AmaranthDisturbed areas, ballast.Native of South America. Reported for VA by Virginia Botanical Associates (2019).image of plant
AmaranthaceaeAmaranthus dubiusSpleen Amaranth, Southern Pigweed, CallalooDisturbed areas.Native of tropical America.
AmaranthaceaeAmaranthus floridanusFlorida AmaranthDunes, beaches.Native, endemic to FL peninsula, north to Duval and Alachua counties (Wunderlin & Hansen 2004).
AmaranthaceaeAmaranthus graecizans ssp. sylvestrisMediterranean AmaranthOn ballast, apparently only a waif.Native of Mediterranean Europe.
AmaranthaceaeAmaranthus greggiiGregg’s Amaranth, Josiah AmaranthDunes, beaches.Native from se. LA west through TX to se. Mexico.
AmaranthaceaeAmaranthus hybridus ssp. hybridusSmooth Amaranth, Slim Amaranth, Green Amaranth, Smooth PigweedDisturbed areas.Original distribution obscure because of its very weedy nature, but apparently native in eastern North America.image of plant
AmaranthaceaeAmaranthus hypochondriacusPrince's-featherDisturbed areas.Native of tropical America. The type locality is "Virginia", where apparently early introduced.image of plant
AmaranthaceaeAmaranthus muricatusMuricate AmaranthDisturbed areas, on ballast, probably only a waif.Native of s. South America.
AmaranthaceaeAmaranthus palmeriCareless-weed, Palmer’s AmaranthArroyos, riverbanks, and disturbed areas; eastwards adventive in fields and disturbed areas.Native of c. and sw. North America and Mexico.image of plant
AmaranthaceaeAmaranthus polygonoidesTropical Amaranth, Smartweed AmaranthDisturbed areas.Native of tropical America. C. TX s. NM, and s. FL (?) south into the Neotropics.image of plant
AmaranthaceaeAmaranthus powelliiGreen Amaranth, Powell's AmaranthDisturbed areas.Native of w. and sc. North America, south to Mexico. Widespread and common in PA (Rhoads & Klein 1993); many earlier reports of A. retroflexus may actually pertain to this species.image of plant
AmaranthaceaeAmaranthus pumilusSeabeach Amaranth, Dwarf AmaranthSea beaches, fore-dunes, island end flats, rarely on sound-side beaches.Se. MA south to c. SC; presently known to be extant only from NC, n. SC, e. MD, DE (McAvoy 2002), se. NY (Long Island), VA, and NJ.image of plant
AmaranthaceaeAmaranthus retroflexusRough Pigweed, Redroot, Redroot AmaranthDisturbed areas.Native of c. and e. North America, now nearly worldwide in distribution and the original native range difficult or impossible to determine.image of plant
AmaranthaceaeAmaranthus scleropoidesBonebract AmaranthSeasonally wet, sandy soils.OK south through TX to CHH, COA, and TAM.
AmaranthaceaeAmaranthus spinosusSpiny Amaranth, Quelite EspinosoFields, gardens, roadsides, barnyards, pastures.Native of tropical America.image of plant
AmaranthaceaeAmaranthus tamaulipensisTamaulipan AmaranthDisturbed areas.S. TX (Cameron County), TAM, SLP, and TAB
AmaranthaceaeAmaranthus thunbergiiThunberg's AmaranthCollected from near wool-combing mills in SC; probably not naturalized.Native of Africa.
AmaranthaceaeAmaranthus torreyi
AmaranthaceaeAmaranthus tricolorSummer Poinsettia, Joseph’s Coat, Chinese Spinach, Malabar SpinachCultivated as an ornamental and salad green, rarely persistent or escaped.Native of tropical Asia.image of plant
AmaranthaceaeAmaranthus tuberculatusInland Water-hempSwamps, bottomlands, fields, disturbed areas.The exact boundaries of its native distribution are now obscure, perhaps approximately OH west to ND south to MS and TX.image of plant
AmaranthaceaeAmaranthus viridisSlender Amaranth, Tropical Green AmaranthDisturbed areas.Native of South America.image of plant