Home›Flowering Plants›Taxonomy›PolygonaceaeTaxaPolygonaceaePlant FamiliesReference and ClassificationVerifiedPolygonaceae, commonly known as the knotweed family, or in the United States as the smartweed buckwheat family, is a family of flowering plants in the order Caryophyllales comprising approximately 1,200 species across roughly 48 genera. Its members are marked by swollen stem nodes and by an ochrea, a papery sheath formed from fused stipules at the base of each leaf, with small bisexual flowers bearing three to six sepals and no petals. The family includes buckwheat, rhubarb, common sorrel, and sea grape, as well as the invasive Japanese knotweed.FactsPolygonaceaeConnectionsSourcesComments (0)Reader Challenges (0)FactsTaxonomic RankWell-attestedFamily 2Member Count BandWell-attestedOver 1000 Species 3Era First AppearedWell-attestedPaleogene 4ClassificationLiving or ExtinctWell-attestedYes 1PolygonaceaeFilter Results7 entriesCommon GroupAllCarnations And Cacti (Caryophyllales) (7)Everyday GroupAllCarnations And Cacti (Caryophyllales) (7)HabitatAllGrassland (2)Steppe (1)Temperate Forest (1)Wetlands (1)Where It LivesAllAfghanistan (2)Albania (4)Algeria (1)Australia (1)Austria (6)Bahamas (1)Bangladesh (3)Belarus (4)Belgium (6)Bolivia (2)Botswana (1)Bulgaria (4)Canada (3)Chad (1)Colombia (1)Costa Rica (2)Cuba (1)Czechia (1)Denmark (6)Dominican Republic (1)Ecuador (1)Eswatini (1)Ethiopia (1)Finland (5)France (5)Georgia (3)Germany (5)Greece (1)Guatemala (1)Haiti (2)Hungary (4)Iceland (4)Iran (2)Iraq (1)Ireland (5)Italy (4)Jamaica (2)Japan (5)Kazakhstan (4)Kenya (2)Lithuania (1)Manchuria (5)Mongolia (4)Morocco (1)Mozambique (1)Myanmar (3)Nepal (3)Netherlands (4)North America (5)Norway (4)Pakistan (2)Poland (3)Portugal (2)Romania (3)Slovakia (1)Spain (2)Sweden (4)Switzerland (3)Taiwan (2)Ukraine (3)United States (2)Uzbekistan (1)Vietnam (1)Conservation StatusAllNot Evaluated (7)DietAllPhotosynthetic Autotroph (7)System (Realm)AllTerrestrial (7)Living or ExtinctAllYes (7)ThreatsAllInvasive and Other Problematic Species, Genes and Diseases (1)Relationship to PeopleAllDomesticated (1)Eaten or Drunk by People (1)Farmed or Commercially Raised (1)Invasive or Introduced Species (3)Used in Traditional Medicine (2)CITES AppendixAllNot Listed (7)NatureServe RankAllG5 Secure (1)GNR Unranked (6)EcosystemAllHeath (1)Show ResultsBrowseCompareSelect all 7Bistorta officinalisPolygonaceaeBuckwheatPolygonaceaeFagopyrum tataricumPolygonaceaeJapanese KnotweedPolygonaceaeRhubarbPolygonaceaeRumex acetosellaPolygonaceaeSorrelPolygonaceaeConnectionsParent Taxon OfBistorta officinalis, Species Well-attested Source Bistorta officinalis (Wikipedia)Buckwheat, Species Well-attested Source Wikidata: BuckwheatFagopyrum tataricum, Species Well-attested Source Wikidata: Fagopyrum tataricumJapanese Knotweed, Species Well-attested Source Wikidata: Japanese KnotweedRhubarb, Species Well-attested Source Wikidata: RhubarbRumex acetosella, Species Well-attested Source Wikidata: Rumex acetosellaSorrel, Species Well-attested Source Wikidata: SorrelSources1. Wikidata (taxon extant/extinct status)tier 2Wikimedia Foundation / Wikidata contributorsQ156117, descriptionView the Source2. Wikipedia: Polygonaceaetier 2WikipediaIntroductionThe Polygonaceae are a family of flowering plants known informally as the knotweed family or smartweed-buckwheat family in the United States.In Group: Other Eudicot Families, LeadThe Polygonaceae are a family of flowering plants known informally as the knotweed family or smartweed-buckwheat family in the United States.View the Source3. Catalogue of Life (ChecklistBank): Taxon metrics for PolygonaceaeCatalogue of Life (ChecklistBank)Taxon metrics, speciesExtantCountQuote, Taxon metrics, speciesExtantCount"speciesExtantCount": 1633View the Source4. Paleobiology Database: Taxon record for PolygonaceaePaleobiology DatabaseTaxon record, first appearance (firstapp_max_ma, early_interval)Quote, Taxon record, first appearance (firstapp_max_ma, early_interval)"taxon_name": "Polygonaceae" ... "firstapp_max_ma": 56 ... "early_interval": "Ypresian"View the SourceWikidata: PolygonaceaeWikidata Q156117, class allow-list match (w-wdresolver-0926)View the SourceWikidata: Japanese KnotweedParent Taxon Of: Japanese Knotweed, Wikidata parent-taxon (P171) chainView the SourceWikidata: RhubarbParent Taxon Of: Rhubarb, Wikidata parent-taxon (P171) chainView the SourceWikidata: SorrelParent Taxon Of: Sorrel, Wikidata parent-taxon (P171) chainView the SourceWikidata: Fagopyrum tataricumParent Taxon Of: Fagopyrum tataricum, Wikidata parent-taxon (P171) chainView the SourceWikidata: BuckwheatParent Taxon Of: Buckwheat, Wikidata parent-taxon (P171) chainView the SourceWikidata: Rumex acetosellaParent Taxon Of: Rumex acetosella, Wikidata parent-taxon (P171) chainView the SourceBistorta officinalis (Wikipedia)Parent Taxon Of: Bistorta officinalis, IntroductionQuote, Parent Taxon Of: Bistorta officinalis, IntroductionBistorta officinalis (synonym Persicaria bistorta), known as bistort, common bistort, European bistort, or meadow bistort, is a species of flowering plant in the dock family Polygonaceae native to Europe and northern and western Asia.View the SourceComments (0)No comments yet. 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