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FamilyScientific Name Common NameHabitatDistributionImage
PolygonaceaePersicaria amphibia ssp. laevimarginataWater SmartweedMarshes, wet disturbed areas.NL (Newfoundland), NU, and AK south to SC, TN, TX, and CA, and southward into the New World tropics.image of plant
PolygonaceaePersicaria arifoliaHalberd-leaf TearthumbMarshes, wet thickets.NS west to MN. south to se. GA, ne. FL (Slaughter 2014; Franck et al. 2016), w. NC, and w. TN.image of plant
PolygonaceaePersicaria careyiCarey's KnotweedMoist soils, disturbed areas.NB west to ON and MN, south to VA, KY, IL, seemingly widely scattered. Reported for sc. PA (Rhoads & Klein 1993; Rhoads & Block 2007), DE, NJ, and MD (Kartesz 1999).image of plant
PolygonaceaePersicaria densifloraDense-flower SmartweedSwamp forests.The Persicaria glabra complex is widespread in the Neotropics, in North America north to s. NJ, VA, KY, MO, and TX. The distribution of Persicaria densiflora is unclear.image of plant
PolygonaceaePersicaria hirsutaHairy SmartweedPondcypress savannas, depression ponds in pinelands.Se. NC south to c. peninsular FL, west to s. MS.image of plant
PolygonaceaePersicaria hydropiperCommon Smartweed, Waterpepper, Marshpepper SmartweedWet pastures, barnyards, ditches.Native of Europe.image of plant
PolygonaceaePersicaria hydropiperoidesWaterpepperSwamp forests, streams, ditches.NS, ON, and AK, south to FL, TX, and CA, and into the New World tropics.image of plant
PolygonaceaePersicaria lapathifoliaWillow-weed, Dockleaf Smartweed, Pale SmartweedBottomlands, bottomland fields, disturbed areas.Nearly cosmopolitan in current distribution, the original distributions hard to interpret, sometimes regarded as having both native and introduced elements in North America.image of plant
PolygonaceaePersicaria longisetaLongbristle Smartweed, Bristly Lady’s-thumb, Creeping SmartweedDisturbed areas, lawns, ditches.Native of Asia.image of plant
PolygonaceaePersicaria maculosaLady’s-thumb, Heart’s-easeDisturbed areas.Native of Eurasia.image of plant
PolygonaceaePersicaria meisneriana var. beyrichianaMexican TearthumbWet savannas, blackwater river floodplains, ditches; sometimes considered only introduced in southeastern North America, but probably native.E. SC south to FL, west to LA; Mexico (CHP, VER) and Central America south to n. South America; Brazil; se. Africa. Reported for Mobile County, AL (Barger et al. 2023).
PolygonaceaePersicaria minorSmall Water-pepperDisturbed moist areas, marshes.Native of Europe. Reported for Camden County, NJ by Schmidt (2023).
PolygonaceaePersicaria orientalisKiss-me-over-the-garden-gate, Prince’s-feather, Prince’s-plume, Princess-featherBarnyards, disturbed areas, garden edges.Native of Eurasia.image of plant
PolygonaceaePersicaria pensylvanicaPinkweed, Common Smartweed, Pennsylvania SmartweedDisturbed areas, bottomlands.NL (Newfoundland), ON, MT, and CA, south to FL, TX, AZ, and to c. Mexico; disjunct (perhaps only introduced?) in AK, Ecuador, Europe.image of plant
PolygonaceaePersicaria perfoliataMile-a-minute-vine, Asiatic Tearthumb, Devil's-tail TearthumbRoadsides, banks, powerline rights-of-way.Native of e. Asia. Introduced and spreading rapidly in n. VA, MD, PA, DC, and WV. Adler (1999) reports it as occurring in PA, MD, VA, WV, DE, OH, NJ, and DC. Poindexter (2010a) reports its discovery at three separate locations in Alleghany County, NC.image of plant
PolygonaceaePersicaria punctataDotted SmartweedSwamp forests, bottomlands, marshes.NS, ON, and BC south to FL, TX, and CA, south into the New World tropics.image of plant
PolygonaceaePersicaria robustiorWater SmartweedPeaty shores or semi-aquatic in water.NS, QC, MI, MO, south irregularly to s. FL and TX, and south into tropical America. Probably under-represented as to states of occurrence because of frequent synonymization.image of plant
PolygonaceaePersicaria sagittataArrowleaf Tearthumb, Arrowvine, Scratch-grassMarshes, bogs, beaver impoundments, wet thickets.NL (Newfoundland) west to MB, south to Panhandle FL and e. TX; China, Manchuria, India, Siberia, Korea, and Japan.image of plant
PolygonaceaePersicaria setaceaSwamp SmartweedSwamp forests, bottomland forests.MA, MI, MO, and OK south to s. FL and TX. Discovered in Ripley County, IN (S. Namestnik, pers.comm. 2022).image of plant
PolygonaceaePersicaria virginianaJumpseed, Virginia KnotweedFloodplains, moist forests.NH, QC, MN, and NE, south to n. peninsular FL and TX; disjunct in c. Mexico (PUE, VER).image of plant
PolygonaceaePersicaria chinensisChinese KnotweedDisturbed areas.Native of Asia. Introduced in MD and NJ.image of plant
PolygonaceaePersicaria extremiorientalisEast Asian SmartweedDisturbed areas, roadsides, roadsides.Native of Japan, China, Korea, and Sakhalin. Reported for Horry County, SC (Bradley et al. [in prep.]).image of plant
PolygonaceaePersicaria capitataPink-head KnotweedDisturbed blackland prairies, other disturbed areas.Native of s. Asia. See Singhurst, Mink, & Holmes (2013) for additional information about the naturalization of this species in TX. Reported for Orleans Parish, LA. Reported for Montgomery County, AL (Diamond & Keener 2021).
PolygonaceaePersicaria nepalensisNepalese SmartweedRiver banks, shores, other moist disturbed areas.Native of e. Asia.image of plant
PolygonaceaePersicaria bicornisPink SmartweedMoist disturbed areas, ditches.IL, IA, SD, and WY south to LA, TX, and NM.image of plant
PolygonaceaePersicaria posumbuAsian Lady's-thumb, Creeping Himalayan SmartweedFloodplains, other moist shaded forests.Native of e. Asia.image of plant
PolygonaceaePersicaria filiformisJapanese JumpseedSuburban woodlands, escaping from horticultural use.Native of e. Asia. Reported as naturalizing in Baltimore County, MD, and Arlington County, VA (Simmons et al. 2020), but probably more widespread than currently mapped.image of plant
PolygonaceaePersicaria coccineaRed-carelessShores, streams, sluggish water.Throughout North America.image of plant

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