Plants of the Four Corners

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  Plantae
      Tracheophyta
            Magnoliopsida
                    Caryophyllales
                            Polygonaceae
                              Eriogonoideae
                                     Acanthoscyphus
                                             Acanthoscyphus parishii
                                                   [Oxytheca parishii]
                                               Acanthoscyphus parishii var. goodmaniana
                                                     [Oxytheca parishii var. goodmaniana]
                                     Antigonon
                                             Antigonon leptopus
                                     Centrostegia
                                             Centrostegia thurberi
                                                   [Chorizanthe thurberi]
                                     Chorizanthe
                                           [Acanthogonum]
                                             Chorizanthe brevicornu
                                             Chorizanthe corrugata
                                             Chorizanthe howellii
                                             Chorizanthe orcuttiana
                                             Chorizanthe pungens
                                               Chorizanthe pungens var. hartwegiana
                                             Chorizanthe rigida
                                                   [Acanthogonum rigidum]
                                             Chorizanthe robusta
                                               Chorizanthe robusta var. hartwegii
                                             Chorizanthe valida
                                             Chorizanthe watsonii
                                     Coccoloba
                                             Coccoloba uvifera
                                     Dodecahema
                                             Dodecahema leptoceras
                                     Eriogonum
                                           [Pterogonum]
                                             Eriogonum abertianum
                                                   [Eriogonum abertianum subsp. pinetorum]
                                                   [Eriogonum abertianum var. bracteatum]
                                                   [Eriogonum abertianum var. cyclosepalum]
                                                   [Eriogonum abertianum var. gillespiei]
                                                   [Eriogonum abertianum var. neomexicanum]
                                                   [Eriogonum abertianum var. ruberrimum]
                                                   [Eriogonum abertianum var. villosum]
                                                   [Eriogonum cyclosepalum]
                                                   [Eriogonum pinetorum]
                                             Eriogonum acaule
                                             Eriogonum alatum
                                                   [Eriogonum alatum var. macdougalii]
                                                   [Eriogonum triste]
                                                   [Pterogonum alatum]
                                               Eriogonum alatum var. glabriusculum
                                               Eriogonum alatum var. mogollense
                                             Eriogonum aliquantum
                                             Eriogonum allenii
                                             Eriogonum ammophilum
                                                   [Eriogonum nummulare var. ammophilum]
                                             Eriogonum ampullaceum
                                             Eriogonum androsaceum
                                             Eriogonum anemophilum
                                             Eriogonum angulosum
                                             Eriogonum annuum
                                             Eriogonum apricum
                                               Eriogonum apricum var. prostratum
                                             Eriogonum arcuatum
                                                   [Eriogonum bakeri]
                                                   [Eriogonum jamesii subsp. flavescens]
                                                   [Eriogonum jamesii var. flavescens]
                                                   [Eriogonum jamesii var. higginsii]
                                               Eriogonum arcuatum var. rupicola
                                                     [Eriogonum jamesii var. rupicola]
                                               Eriogonum arcuatum var. xanthum
                                                     [Eriogonum chloranthum]
                                                     [Eriogonum flavum subsp. chloranthum]
                                                     [Eriogonum flavum var. xanthum]
                                                     [Eriogonum jamesii var. xanthum]
                                                     [Eriogonum xanthum]
                                             Eriogonum aretioides
                                             Eriogonum arizonicum
                                             Eriogonum artificis
                                             Eriogonum atrorubens
                                                   [Eriogonum atrorubens var. pseudociliatum]
                                             Eriogonum baileyi
                                             Eriogonum batemanii
                                             Eriogonum bicolor
                                             Eriogonum bifurcatum
                                             Eriogonum brachypodum
                                                   [Eriogonum deflexum subsp. parryi]
                                                   [Eriogonum deflexum var. brachypodum]
                                                   [Eriogonum parryi]
                                             Eriogonum brandegeei
                                             Eriogonum brevicaule
                                                   [Eriogonum brevicaule subsp. grangerense]
                                                   [Eriogonum brevicaule var. leptothecum]
                                                   [Eriogonum brevicaule var. wasatchense]
                                                   [Eriogonum campanulatum subsp. leptothecum]
                                                   [Eriogonum campanulatum]
                                                   [Eriogonum nudicaule subsp. garrettii]
                                                   [Eriogonum nudicaule subsp. parleyense]
                                                   [Eriogonum wasatchense]
                                               Eriogonum brevicaule var. bannockense
                                               Eriogonum brevicaule var. caelitum
                                               Eriogonum brevicaule var. canum
                                                     [Eriogonum lagopus]
                                               Eriogonum brevicaule var. cottamii
                                                     [Eriogonum tenellum subsp. cottamii]
                                               Eriogonum brevicaule var. laxifolium
                                                     [Eriogonum brevicaule var. huberi]
                                                     [Eriogonum brevicaule var. promiscuum]
                                                     [Eriogonum brevicaule var. pumilum]
                                                     [Eriogonum chrysocephalum]
                                                     [Eriogonum kingii var. laxifolium]
                                                     [Eriogonum medium]
                                                     [Eriogonum ochrocephalum var. angustum]
                                               Eriogonum brevicaule var. micranthum
                                               Eriogonum brevicaule var. mitophyllum
                                                     [Eriogonum mitophyllum]
                                               Eriogonum brevicaule var. nanum
                                                     [Eriogonum grayi]
                                                     [Eriogonum nanum]
                                             Eriogonum caespitosum
                                                   [Eriogonum andinum]
                                             Eriogonum capillare
                                             Eriogonum cernuum
                                                   [Eriogonum cernuum subsp. tenue]
                                                   [Eriogonum cernuum var. psammophilum]
                                                   [Eriogonum cernuum var. tenue]
                                                   [Eriogonum cernuum var. viminale]
                                             Eriogonum clavatum
                                             Eriogonum clavellatum
                                             Eriogonum codium
                                             Eriogonum coloradense
                                             Eriogonum compositum
                                               Eriogonum compositum var. leianthum
                                             Eriogonum concinnum
                                             Eriogonum contortum
                                             Eriogonum corymbosum
                                                   [Eriogonum corymbosum var. divaricatum]
                                                   [Eriogonum corymbosum var. erectum]
                                                   [Eriogonum divergens]
                                                   [Eriogonum effusum var. durum]
                                                   [Eriogonum salinum]
                                               Eriogonum corymbosum var. aureum
                                               Eriogonum corymbosum var. glutinosum
                                                     [Eriogonum aureum var. glutinosum]
                                                     [Eriogonum crispum]
                                               Eriogonum corymbosum var. heilii
                                               Eriogonum corymbosum var. nilesii
                                               Eriogonum corymbosum var. orbiculatum
                                                     [Eriogonum effusum subsp. orbiculatum]
                                               Eriogonum corymbosum var. revealianum
                                                     [Eriogonum revealianum]
                                               Eriogonum corymbosum var. velutinum
                                             Eriogonum cronquistii
                                                   [Eriogonum corymbosum var. cronquistii]
                                             Eriogonum cusickii
                                             Eriogonum darrovii
                                             Eriogonum davidsonii
                                                   [Eriogonum juncinellum]
                                                   [Eriogonum vimineum subsp. juncinellum]
                                             Eriogonum deflexum
                                                   [Eriogonum deflexum subsp. insigne]
                                                   [Eriogonum deflexum var. turbinatum]
                                                   [Eriogonum insigne]
                                                   [Eriogonum turbinatum]
                                               Eriogonum deflexum var. baratum
                                                     [Eriogonum clutei]
                                               Eriogonum deflexum var. nevadense
                                             Eriogonum deserticola
                                             Eriogonum desertorum
                                                   [Eriogonum brevicaule var. desertorum]
                                             Eriogonum divaricatum
                                             Eriogonum domitum
                                             Eriogonum effusum
                                                   [Eriogonum microtheca var. effusum]
                                                   [Eriogonum myrianthum]
                                             Eriogonum elatum
                                             Eriogonum ephedroides
                                                   [Eriogonum brevicaule var. ephedroides]
                                             Eriogonum eremicum
                                                   [Eriogonum batemanii var. eremicum]
                                             Eriogonum ericifolium
                                                   [Eriogonum mearnsii]
                                             Eriogonum esmeraldense
                                                   [Eriogonum esmeraldense var. tayei]
                                             Eriogonum exaltatum
                                             Eriogonum exilifolium
                                             Eriogonum fasciculatum
                                               Eriogonum fasciculatum var. flavoviride
                                               Eriogonum fasciculatum var. foliolosum
                                                     [Eriogonum fasciculatum subsp. foliolosum]
                                               Eriogonum fasciculatum var. polifolium
                                                     [Eriogonum fasciculatum subsp. polifolium]
                                                     [Eriogonum polifolium]
                                             Eriogonum flavum
                                                   [Eriogonum aureum]
                                                   [Eriogonum crassifolium]
                                               Eriogonum flavum var. piperi
                                             Eriogonum foliosum
                                             Eriogonum fusiforme
                                                   [Eriogonum inflatum var. fusiforme]
                                             Eriogonum glandulosum
                                                   [Eriogonum trichopes subsp. glandulosum]
                                             Eriogonum gordonii
                                                   [Eriogonum trinervatum]
                                             Eriogonum gracile
                                                   [Eriogonum gracile var. effusum]
                                             Eriogonum graniticum
                                                   [Eriogonum tenellum var. ramosissimum]
                                             Eriogonum gypsophilum
                                             Eriogonum havardii
                                             Eriogonum heermannii
                                               Eriogonum heermannii var. argense
                                                     [Eriogonum apachense]
                                                     [Eriogonum heermannii subsp. argense]
                                                     [Eriogonum heermannii var. subracemosum]
                                                     [Eriogonum howellii var. subracemosum]
                                                     [Eriogonum sulcatum var. argense]
                                               Eriogonum heermannii var. floccosum
                                               Eriogonum heermannii var. subspinosum
                                               Eriogonum heermannii var. sulcatum
                                                     [Eriogonum heermannii subsp. sulcatum]
                                                     [Eriogonum sulcatum]
                                             Eriogonum heracleoides
                                                   [Eriogonum angustifolium]
                                                   [Eriogonum heracleoides var. angustifolium]
                                                   [Eriogonum heracleoides var. minus]
                                               Eriogonum heracleoides var. leucophaeum
                                             Eriogonum hieraciifolium
                                                   [Eriogonum pannosum]
                                             Eriogonum hookeri
                                                   [Eriogonum deflexum var. gilvum]
                                             Eriogonum howellianum
                                             Eriogonum hylophilum
                                                   [Eriogonum corymbosum var. hylophilum]
                                             Eriogonum incanum
                                             Eriogonum inflatum
                                                   [Eriogonum inflatum var. deflatum]
                                             Eriogonum jamesii
                                                   [Eriogonum jamesii var. neomexicanum]
                                               Eriogonum jamesii var. undulatum
                                             Eriogonum jonesii
                                                   [Eriogonum lanosum]
                                             Eriogonum kelloggii
                                             Eriogonum kennedyi
                                               Eriogonum kennedyi var. austromontanum
                                             Eriogonum lachnogynum
                                                   [Eriogonum tetraneuris]
                                               Eriogonum lachnogynum var. colobum
                                               Eriogonum lachnogynum var. sarahiae
                                                     [Eriogonum sarahiae]
                                             Eriogonum lancifolium
                                                   [Eriogonum corymbosum var. davidsei]
                                             Eriogonum leptocladon
                                               Eriogonum leptocladon var. papiliunculum
                                               Eriogonum leptocladon var. ramosissimum
                                                     [Eriogonum pallidum]
                                                     [Eriogonum ramosissimum]
                                             Eriogonum leptophyllum
                                                   [Eriogonum effusum var. leptophyllum]
                                               Eriogonum leptophyllum var. vallis-rubrum
                                             Eriogonum loganum
                                                   [Eriogonum brevicaule var. loganum]
                                             Eriogonum lonchophyllum
                                                   [Eriogonum effusum var. nudicaule]
                                                   [Eriogonum fendlerianum]
                                                   [Eriogonum humivagans]
                                                   [Eriogonum intermontanum]
                                                   [Eriogonum lonchophyllum var. fendlerianum]
                                                   [Eriogonum lonchophyllum var. intermontanum]
                                                   [Eriogonum lonchophyllum var. nudicaule]
                                                   [Eriogonum lonchophyllum var. saurinum]
                                                   [Eriogonum nudicaule]
                                                   [Eriogonum salicinum]
                                                   [Eriogonum sarothriforme]
                                                   [Eriogonum saurinum]
                                                   [Eriogonum scoparium]
                                                   [Eriogonum tristichum]
                                             Eriogonum longifolium
                                                   [Eriogonum longifolium var. lindheimeri]
                                               Eriogonum longifolium var. gnaphalifolium
                                             Eriogonum luteolum
                                               Eriogonum luteolum var. saltuarium
                                             Eriogonum maculatum
                                             Eriogonum marifolium
                                             Eriogonum microtheca
                                               Eriogonum microtheca var. ambiguum
                                               Eriogonum microtheca var. lapidicola
                                               Eriogonum microtheca var. laxiflorum
                                                     [Eriogonum confertiflorum var. stansburyi]
                                               Eriogonum microtheca var. phoeniceum
                                                     [Eriogonum phoeniceum]
                                               Eriogonum microtheca var. simpsonii
                                                     [Eriogonum effusum var. foliosum]
                                                     [Eriogonum friscanum]
                                                     [Eriogonum macdougalii]
                                                     [Eriogonum microtheca var. foliosum]
                                                     [Eriogonum nelsonii]
                                                     [Eriogonum simpsonii var. floccosolanatum]
                                                     [Eriogonum simpsonii]
                                             Eriogonum molestum
                                             Eriogonum mortonianum
                                             Eriogonum multiflorum
                                             Eriogonum natum
                                                   [Eriogonum spathulatum var. natum]
                                             Eriogonum nidularium
                                             Eriogonum nummulare
                                                   [Eriogonum dudleyanum]
                                                   [Eriogonum kearneyi]
                                             Eriogonum nutans
                                                   [Eriogonum rubiflorum]
                                             Eriogonum ordii
                                             Eriogonum ostlundii
                                                   [Eriogonum batemanii var. ostlundii]
                                                   [Eriogonum spathuliforme]
                                             Eriogonum ovalifolium
                                                   [Eriogonum ovalifolium var. multiscapum]
                                                   [Eriogonum ovalifolium var. nevadense]
                                               Eriogonum ovalifolium var. depressum
                                               Eriogonum ovalifolium var. nivale
                                               Eriogonum ovalifolium var. ochroleucum
                                                     [Eriogonum ovalifolium subsp. ochroleucum]
                                               Eriogonum ovalifolium var. purpureum
                                                     [Eriogonum orthocaulon]
                                                     [Eriogonum ovalifolium subsp. purpureum]
                                                     [Eriogonum ovalifolium var. orthocaulon]
                                               Eriogonum ovalifolium var. vineum
                                                     [Eriogonum ovalifolium subsp. vineum]
                                               Eriogonum ovalifolium var. williamsiae
                                             Eriogonum palmerianum
                                             Eriogonum panamintense
                                             Eriogonum panguicense
                                                   [Eriogonum pauciflorum var. panguicense]
                                               Eriogonum panguicense var. alpestre
                                                     [Eriogonum chrysocephalum subsp. alpestre]
                                             Eriogonum parishii
                                             Eriogonum pauciflorum
                                                   [Eriogonum multiceps]
                                                   [Eriogonum pauciflorum var. gnaphalodes]
                                             Eriogonum pelinophilum
                                             Eriogonum pharnaceoides
                                               Eriogonum pharnaceoides var. cervinum
                                             Eriogonum plumatella
                                                   [Eriogonum palmeri]
                                                   [Eriogonum plumatella var. jaegeri]
                                             Eriogonum polycladon
                                                   [Eriogonum densum]
                                                   [Eriogonum polycladon var. crispum]
                                                   [Eriogonum vimineum subsp. polycladon]
                                             Eriogonum pulchrum
                                                   [Eriogonum ericifolium var. pulchrum]
                                             Eriogonum pusillum
                                             Eriogonum pyrolifolium
                                               Eriogonum pyrolifolium var. coryphaeum
                                             Eriogonum racemosum
                                                   [Eriogonum obtusum]
                                                   [Eriogonum orthocladon]
                                                   [Eriogonum racemosum var. cordifolium]
                                                   [Eriogonum racemosum var. sagittatum]
                                             Eriogonum reniforme
                                                   [Eriogonum reniforme var. comosum]
                                             Eriogonum ripleyi
                                             Eriogonum roseum
                                             Eriogonum rotundifolium
                                                   [Eriogonum cernuum subsp. glaucescens]
                                             Eriogonum rupinum
                                             Eriogonum scabrellum
                                             Eriogonum shockleyi
                                                   [Eriogonum longilobum]
                                                   [Eriogonum pulvinatum]
                                                   [Eriogonum shockleyi subsp. candidum]
                                                   [Eriogonum shockleyi subsp. longilobum]
                                                   [Eriogonum shockleyi var. longilobum]
                                             Eriogonum smithii
                                                   [Eriogonum corymbosum var. smithii]
                                             Eriogonum soredium
                                             Eriogonum spathulatum
                                                   [Eriogonum nudicaule subsp. ochroflorum]
                                                   [Eriogonum spathulatum var. kayeae]
                                             Eriogonum spergulinum
                                             Eriogonum sphaerocephalum
                                             Eriogonum strictum
                                               Eriogonum strictum var. proliferum
                                             Eriogonum subreniforme
                                                   [Eriogonum filicaule]
                                             Eriogonum suffruticosum
                                             Eriogonum tenellum
                                               Eriogonum tenellum var. platyphyllum
                                                     [Eriogonum platyphyllum]
                                             Eriogonum ternatum
                                             Eriogonum terrenatum
                                             Eriogonum thomasii
                                             Eriogonum thompsoniae
                                                   [Eriogonum corymbosum var. thompsoniae]
                                               Eriogonum thompsoniae var. albiflorum
                                                     [Eriogonum corymbosum var. albiflorum]
                                                     [Eriogonum corymbosum var. matthewsiae]
                                                     [Eriogonum thompsoniae var. matthewsiae]
                                               Eriogonum thompsoniae var. atwoodii
                                                     [Eriogonum corymbosum var. atwoodii]
                                             Eriogonum thurberi
                                                   [Eriogonum thurberi var. acutangulum]
                                             Eriogonum tomentosum
                                             Eriogonum trichopes
                                                   [Eriogonum trichopodum var. minus]
                                                   [Eriogonum trichopodum]
                                             Eriogonum tumulosum
                                                   [Eriogonum villiflorum var. tumulosum]
                                             Eriogonum umbellatum
                                               Eriogonum umbellatum var. aureum
                                                     [Eriogonum neglectum]
                                                     [Eriogonum umbellatum var. umbelliferum]
                                                     [Eriogonum umbelliferum]
                                               Eriogonum umbellatum var. cognatum
                                                     [Eriogonum cognatum]
                                                     [Eriogonum umbellatum subsp. cognatum]
                                               Eriogonum umbellatum var. deserticum
                                               Eriogonum umbellatum var. dichrocephalum
                                                     [Eriogonum umbellatum var. aridum]
                                               Eriogonum umbellatum var. ellipticum
                                                     [Eriogonum stellatum]
                                                     [Eriogonum umbellatum subsp. stellatum]
                                                     [Eriogonum umbellatum var. stellatum]
                                               Eriogonum umbellatum var. juniporinum
                                               Eriogonum umbellatum var. majus
                                                     [Eriogonum subalpinum]
                                                     [Eriogonum umbellatum subsp. majus]
                                                     [Eriogonum umbellatum var. subalpinum]
                                               Eriogonum umbellatum var. modocense
                                               Eriogonum umbellatum var. mohavense
                                               Eriogonum umbellatum var. nevadense
                                               Eriogonum umbellatum var. polyanthum
                                                     [Eriogonum polyanthum]
                                               Eriogonum umbellatum var. porteri
                                                     [Eriogonum porteri]
                                               Eriogonum umbellatum var. ramulosum
                                               Eriogonum umbellatum var. subaridum
                                                     [Eriogonum biumbellatum]
                                                     [Eriogonum umbellatum subsp. subaridum]
                                               Eriogonum umbellatum var. torreyanum
                                             Eriogonum ursinum
                                             Eriogonum villiflorum
                                             Eriogonum vimineum
                                             Eriogonum viridulum
                                                   [Eriogonum brevicaule var. viridulum]
                                             Eriogonum viscidulum
                                             Eriogonum watsonii
                                             Eriogonum wetherillii
                                                   [Eriogonum filiforme]
                                             Eriogonum wootonii
                                                   [Eriogonum jamesii var. wootonii]
                                             Eriogonum wrightii
                                                   [Eriogonum wrightii subsp. glomerulum]
                                                   [Eriogonum wrightii var. floccosum]
                                               Eriogonum wrightii var. nodosum
                                                     [Eriogonum pringlei]
                                                     [Eriogonum wrightii subsp. nodosum]
                                                     [Eriogonum wrightii var. pringlei]
                                               Eriogonum wrightii var. trachygonum
                                             Eriogonum zionis
                                                   [Eriogonum racemosum var. nobilis]
                                                   [Eriogonum racemosum var. zionis]
                                               Eriogonum zionis var. coccineum
                                                     [Eriogonum racemosum var. coccineum]
                                             Eriogonum ×duchesnense
                                                   [Eriogonum corymbosum var. albogilvum]
                                             Eriogonum ×nebraskense
                                     Johanneshowellia
                                             Johanneshowellia puberula
                                                   [Eriogonum puberulum]
                                     Nemacaulis
                                             Nemacaulis denudata
                                               Nemacaulis denudata var. gracilis
                                     Oxytheca
                                             Oxytheca perfoliata
                                     Pterostegia
                                             Pterostegia drymarioides
                                     Stenogonum
                                             Stenogonum flexum
                                                   [Eriogonum flexum var. ferronis]
                                                   [Eriogonum flexum]
                                             Stenogonum salsuginosum
                                                   [Eriogonum salsuginosum]
                              Polygonoideae
                                     Bistorta
                                             Bistorta affinis
                                             Bistorta bistortoides
                                                   [Bistorta linearifolia]
                                                   [Polygonum bistortoides var. linearifolium]
                                                   [Polygonum bistortoides var. oblongifolium]
                                                   [Polygonum bistortoides]
                                             Bistorta officinalis
                                               Bistorta officinalis subsp. officinalis
                                                     [Persicaria bistorta]
                                                     [Polygonum bistorta]
                                             Bistorta vivipara
                                                   [Persicaria vivipara]
                                                   [Polygonum viviparum]
                                     Fagopyrum
                                             Fagopyrum esculentum
                                     Fallopia
                                           [Bilderdykia]
                                             Fallopia baldschuanica
                                                   [Fallopia aubertii]
                                                   [Polygonum aubertii]
                                                   [Polygonum baldschuanicum]
                                             Fallopia convolvulus
                                                   [Bilderdykia convolvulus]
                                                   [Polygonum convolvulaceum]
                                                   [Polygonum convolvulus]
                                                   [Tiniaria convolvulus]
                                             Fallopia dumetorum
                                                   [Polygonum dumetorum]
                                             Fallopia scandens
                                                   [Polygonum scandens]
                                     Knorringia
                                             Knorringia sibirica
                                               Knorringia sibirica subsp. sibirica
                                                     [Polygonum coarctatum]
                                     Koenigia
                                             Koenigia islandica
                                     Oxyria
                                             Oxyria digyna
                                     Parogonum
                                             Parogonum ciliinode
                                                   [Fallopia cilinodis]
                                     Persicaria
                                             Persicaria amphibia
                                                   [Polygonum amphibium var. aquaticum]
                                                   [Polygonum amphibium]
                                                   [Polygonum natans]
                                               Persicaria amphibia var. emersa
                                                     [Persicaria coccinea]
                                                     [Persicaria pratincola]
                                                     [Polygonum amphibium var. emersum]
                                                     [Polygonum emersum]
                                               Persicaria amphibia var. stipulacea
                                                     [Persicaria muriculata]
                                                     [Persicaria psychrophila]
                                                     [Persicaria rothrockii]
                                                     [Persicaria wardii]
                                                     [Polygonum amphibium var. natans]
                                                     [Polygonum amphibium var. stipulaceum]
                                                     [Polygonum coccineum f. natans]
                                                     [Polygonum coccineum]
                                                     [Polygonum natans f. hartwrightii]
                                                     [Polygonum oreganum]
                                             Persicaria bicornis
                                                   [Persicaria longistyla]
                                                   [Polygonum bicorne]
                                             Persicaria glabra
                                                   [Persicaria portoricensis]
                                                   [Polygonum densiflorum]
                                             Persicaria hirsuta
                                                   [Polygonum hirsutum]
                                             Persicaria hydropiper
                                                   [Polygonum hydropiper]
                                             Persicaria hydropiperoides
                                                   [Polygonum hydropiperoides]
                                               Persicaria hydropiperoides var. persicarioides
                                                     [Polygonum persicarioides]
                                             Persicaria lapathifolia
                                               Persicaria lapathifolia subsp. lapathifolia
                                                     [Persicaria nodosa]
                                                     [Polygonum incanum]
                                                     [Polygonum lapathifolium var. nodosum]
                                                     [Polygonum lapathifolium]
                                                     [Polygonum nodosum]
                                               Persicaria lapathifolia subsp. pallida
                                                     [Persicaria tomentosa]
                                                     [Polygonum tomentosum]
                                               Persicaria lapathifolia var. salicifolia
                                                     [Polygonum lapathifolium var. salicifolium]
                                             Persicaria maculosa
                                                   [Persicaria incana]
                                                   [Polygonum fusiforme]
                                                   [Polygonum persicaria]
                                             Persicaria nepalensis
                                                   [Polygonum punctatum]
                                             Persicaria orientalis
                                             Persicaria pensylvanica
                                                   [Persicaria maculata]
                                                   [Polygonum pensylvanicum]
                                             Persicaria posumbu
                                               Persicaria posumbu subsp. posumbu
                                                     [Polygonum cespitosum]
                                             Persicaria punctata
                                                   [Polygonum acre]
                                             Persicaria sagittata
                                                   [Polygonum sagittatum]
                                                   [Truellum sagittatum]
                                     Polygonella
                                             Polygonella americana
                                             Polygonella basiramia
                                             Polygonella myriophylla
                                     Polygonum
                                             Polygonum achoreum
                                                   [Polygonum erectum subsp. achoreum]
                                             Polygonum arenarium
                                             Polygonum arenastrum
                                               Polygonum arenastrum subsp. arenastrum
                                                     [Polygonum aviculare subsp. depressum]
                                                     [Polygonum procumbens]
                                             Polygonum austiniae
                                             Polygonum aviculare
                                               Polygonum aviculare subsp. aviculare
                                                     [Polygonum aviculare var. condensatum]
                                                     [Polygonum aviculare var. littorale]
                                                     [Polygonum aviculare var. procumbens]
                                                     [Polygonum buxifolium]
                                                     [Polygonum rubescens]
                                               Polygonum aviculare subsp. buxiforme
                                                     [Polygonum aviculare var. buxiforme]
                                                     [Polygonum buxiforme]
                                               Polygonum aviculare subsp. neglectum
                                                     [Polygonum neglectum]
                                               Polygonum aviculare subsp. rurivagum
                                                     [Polygonum aviculare var. angustissimum]
                                                     [Polygonum rurivagum]
                                             Polygonum bellardii
                                                   [Polygonum aviculare var. bellardii]
                                                   [Polygonum monspeliense]
                                             Polygonum brasiliense
                                             Polygonum douglasii
                                                   [Polygonum buxiforme f. montanum]
                                                   [Polygonum commixtum]
                                                   [Polygonum douglasii var. latifolium]
                                                   [Polygonum montanum]
                                                   [Polygonum tenue var. commune]
                                                   [Polygonum tenue var. latifolium]
                                                   [Polygonum vagans]
                                             Polygonum engelmannii
                                                   [Polygonum consimile]
                                                   [Polygonum douglasii subsp. engelmannii]
                                                   [Polygonum douglasii var. microspermum]
                                                   [Polygonum tenue var. microspermum]
                                             Polygonum erectum
                                             Polygonum graminifolium
                                             Polygonum hickmanii
                                             Polygonum kelloggii
                                                   [Polygonum polygaloides subsp. kelloggii]
                                                   [Polygonum unifolium]
                                             Polygonum majus
                                             Polygonum minimum
                                             Polygonum minutissimum
                                             Polygonum paronychia
                                             Polygonum patulum
                                             Polygonum polycnemoides
                                             Polygonum polygaloides
                                               Polygonum polygaloides subsp. confertiflorum
                                                     [Polygonum imbricatum]
                                                     [Polygonum kelloggii var. watsonii]
                                                     [Polygonum watsonii]
                                             Polygonum ramosissimum
                                               Polygonum ramosissimum subsp. prolificum
                                                     [Polygonum prolificum]
                                                     [Polygonum ramosissimum var. prolificum]
                                               Polygonum ramosissimum subsp. ramosissimum
                                                     [Polygonum latum]
                                             Polygonum sawatchense
                                               Polygonum sawatchense subsp. sawatchense
                                                     [Polygonum douglasii subsp. johnstonii]
                                                     [Polygonum douglasii var. johnstonii]
                                                     [Polygonum douglasii var. utahense]
                                                     [Polygonum triandrum]
                                                     [Polygonum utahense]
                                             Polygonum spergulariiforme
                                                   [Polygonum douglasii subsp. spergulariiforme]
                                                   [Polygonum emaciatum]
                                             Polygonum tenue
                                     Reynoutria
                                           [Tiniaria]
                                             Reynoutria japonica
                                                   [Fallopia japonica]
                                                   [Polygonum cuspidatum]
                                             Reynoutria sachalinensis
                                                   [Fallopia sachalinensis]
                                                   [Polygonum sachalinense]
                                     Rheum
                                             Rheum australe
                                             Rheum rhabarbarum
                                             Rheum rhaponticum
                                     Rumex
                                             Rumex acetosa
                                               Rumex acetosa subsp. acetosa
                                                     [Rumex triangularis]
                                             Rumex acetosella
                                               Rumex acetosella subsp. acetosella
                                                     [Acetosella vulgaris]
                                                     [Rumex acetosella var. vulgaris]
                                             Rumex alpinus
                                                   [Rumex pauciflorus]
                                             Rumex altissimus
                                             Rumex aquaticus
                                             Rumex californicus
                                             Rumex chrysocarpus
                                                   [Rumex berlandieri]
                                             Rumex conglomeratus
                                             Rumex crispus
                                             Rumex densiflorus
                                                   [Rumex polyrrhizus]
                                             Rumex dentatus
                                             Rumex ellipticus
                                                   [Rumex altissimus subsp. ellipticus]
                                             Rumex fueginus
                                                   [Rumex maritimus subsp. fueginus]
                                                   [Rumex maritimus var. athrix]
                                                   [Rumex maritimus var. fueginus]
                                             Rumex hastatulus
                                             Rumex hydrolapathum
                                                   [Rumex britannica]
                                             Rumex hymenosepalus
                                             Rumex lacustris
                                                   [Rumex salicifolius var. lacustris]
                                             Rumex longifolius
                                             Rumex maritimus
                                             Rumex nematopodus
                                             Rumex obtusifolius
                                               Rumex obtusifolius subsp. obtusifolius
                                                     [Rumex obtusifolius subsp. agrestis]
                                               Rumex obtusifolius subsp. subalpinus
                                                     [Rumex subalpinus]
                                             Rumex occidentalis
                                                   [Rumex aquaticus subsp. occidentalis]
                                                   [Rumex aquaticus var. fenestratus]
                                                   [Rumex bakeri]
                                                   [Rumex occidentalis var. fenestratus]
                                               Rumex occidentalis var. tomentellus
                                                     [Rumex tomentellus]
                                             Rumex orthoneurus
                                             Rumex patientia
                                             Rumex paucifolius
                                                   [Acetosella paucifolia]
                                             Rumex persicarioides
                                             Rumex praecox
                                             Rumex pulcher
                                             Rumex pycnanthus
                                                   [Rumex densiflorus var. pycnanthus]
                                             Rumex salicifolius
                                               Rumex salicifolius var. denticulatus
                                                     [Rumex hesperius]
                                                     [Rumex salicifolius var. montigenitus]
                                             Rumex spiralis
                                             Rumex stenophyllus
                                             Rumex triangulivalvis
                                                   [Rumex mexicanus]
                                                   [Rumex salicifolius subsp. mexicanus]
                                                   [Rumex salicifolius subsp. triangulivalvis]
                                                   [Rumex salicifolius var. mexicanus]
                                                   [Rumex salicifolius var. triangulivalvis]
                                                   [Rumex triangulivalvis var. oreolapathum]
                                             Rumex utahensis
                                                   [Rumex salicifolius var. utahensis]
                                             Rumex venosus
                                             Rumex verticillatus
                                             Rumex violascens