Texas Vascular Plant Checklist:  Polygonaceae
The Buckwheat Family
(Magnoliophyta, Magnoliopsida, Caryophyllidae)

 Antigonon
   leptopus Hook. & Arn. (queen's wreath, coamecatl)

 Brunnichia
   ovata (Walt.) Shinners (american buckwheat vine, eardrop vine)

 Emex
   spinosa (L.) Campd. (spiny threecorner jack)

 Eriogonum
   abertianum var. abertianum (abert wild buckwheat)
   abertianum var. cyclosepalum (Greene) Fosberg
   alatum var. alatum (wing wild buckwheat, winged eriogonum)
   alatum var. glabriusculum Torr.
   annuum Nutt. (annual wild buckwheat)
   correllii Reveal (correll's wild buckwheat)
   greggii Torr. & Gray (gregg wild buckwheat)
   havardii S. Wats. (havard wild buckwheat)
   hemipterum (Torr.) S. Stokes (chisos mountain wild buckwheat)
   hieraciifolium Benth. (hawkweed wild buckwheat)
   jamesii var. jamesii (james wild buckwheat, antelope sage, james eriogonum)
   jamesii var. undulatum (Benth.) S. Stokes ex M.E. Jones
   lachnogynum Torr. ex Benth. (woollycup wild buckwheat)
   lonchophyllum var. fendlerianum (Benth.) Reveal
   longifolium var. longifolium (longleaf wild buckwheat)
   multiflorum Benth. (heart-sepal wild buckwheat)
   nealleyi Coult. (neally wild buckwheat)
   polycladon Benth. (sorrel wild buckwheat, sorrel eriogonum)
   rotundifolium Benth. (roundleaf wild buckwheat)
   suffruticosum S. Wats. (bushy wild buckwheat)
   tenellum var. platyphyllum (Torr. ex Benth.) Torr.
   tenellum var. ramosissimum Benth.
   tenellum var. tenellum (tall wild buckwheat)
   wrightii var. wrightii (wright wild buckwheat, wright buckwheat brush, bastard-sage)

 Oxyria
   digyna (L.) Hill (mountain sorrel)

 Polygonella
   americana (Fisch. & C.A. Mey.) Small (southern jointweed, small jointweed)
   parksii Cory (park jointweed)
   polygama (Vent.) Engelm. & Gray (october-flower)

 Polygonum
   amphibium var. emersum Michx.
   arenastrum Jord. ex Boreau (oval leaf knotweed)
   argyrocoleon Steud. ex Kunze (silversheath knotweed)
   aviculare L. (prostrate knotweed)
   caespitosum var. longisetum (de Bruyn) A.N. Steward
   convolvulus var. convolvulus (dullseed cornbind, corn bindweed, black bindweed, wild buckwheat)
   densiflorum Meisn. (stout smartweed)
   erectum L. (erect knotweed)
   hydropiper L. (water smartweed)
   hydropiperoides Michx. (swamp smartweed)
   lacerum Kunth (fringed knotweed)
   lapathifolium L. (dock leaf smartweed)
   meisnerianum var. beyrichianum (Cham. & Schlecht.) Meisn.
   orientale L. (kiss me over the garden gate)
   pensylvanicum L. (pennsylvania smartweed, pink smartweed)
   persicaria L. (lady's thumb, moco de quajolote, hearts ease)
   punctatum var. confertiflorum (Meisn.) Fassett (water smartweed, dotted smartweed, water smartweed)
   punctatum var. punctatum
   ramosissimum var. prolificum Small (bushy knotweed)
   ramosissimum var. ramosissimum
   robustius (Small) Fernald (stout smartweed)
   sagittatum L. (arrowvine, arrowleaf, tearthumb)
   scandens var. cristatum (Engelm. & Gray) Gleason (thicket knotgrass)
   scandens var. scandens
   setaceum Baldw. (bog smartweed)
   striatulum B.L. Robins. (striped knotweed)
   tenue Michx. (pleatleaf knotweed, slender knotweed)
   virginianum L. (jumpseed)

 Rumex
   acetosella L. (sheep sorrel, sorrel)
   × acutus L. (pro sp.) [crispus × obtusifolius]
   altissimus Wood (pale dock, peachleaf dock, smooth dock)
   aquaticus var. fenestratus (Greene) Dorn
   chrysocarpus Moris (amnastla)
   conglomeratus Murr. (sharp dock)
   crispus subsp. crispus (curly dock, curlyleaf dock, indian tobacco, yellow dock)
   hastatulus Baldw. (heartwing sorrel, engelmann's dock)
   hymenosepalus Torr. (caraigre, wild rhubarb)
   maritimus L. (golden dock)
   obtusifolius L. (bitter dock)
   paraguayensis Parodi (paraguayan dock)
   pulcher L. (fiddle dock)
   salicifolius var. mexicanus (Meisn.) C.L. Hitchc.
   spiralis Small (winged dock)
   venosus Pursh (veiny dock)
   verticillatus L. (swamp dock)
   violascens Rech. f. (violet dock)