#family_Polygonaceae__Polygonaceae__buckwheat_family__buckwheatfamily  a family of plants of order Polygonales chiefly of the north temperate zone; includes the buckwheats
  supertype:  dicot_family__dicotfamily__magnoliopsid_family  family of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination
  member of:  order_Polygonales
  member:  genus_Polygonum__Polygonum  diverse genus of herbs or woody subshrubs of north temperate regions
     member:  silver_lace_vine__China_fleece_vine__Russian_vine__Polygonum_aubertii  twining perennial vine having racemes of fragrant greenish flowers; western China to Russia
     member:  Polygonum_fagopyrum__buckwheat__Fagopyrum_esculentum  or member of genus Fagopyrum; annual Asian plant with clusters of small pinkish white flowers and small edible triangular seeds which are used whole or ground into flour
     member:  prince's-feather__princess_feather__kiss-me-over-the-garden-gate__prince's-plume__Polygonum_orientale  annual with broadly ovate leaves and slender drooping spikes of crimson flowers; southeastern Asia and Australia; naturalized in North America
  member:  genus_Fagopyrum__Fagopyrum  buckwheat; in some classifications included in the genus Polygonum
  member:  genus_Eriogonum  North American herbs of the buckwheat family
     member:  eriogonum  any plant of the genus Eriogonum with small clustered flowers
  member:  genus_Rheum__Rheum  rhubarb
     member:  rhubarb_plant__rhubarbplant__rhubarb  plants having long green or reddish acidic leafstalks growing in basal clumps; stems (and only the stems) are edible when cooked; leaves are poisonous
     member:  Himalayan_rhubarb__Indian_rhubarb__red-veined_pie_plant__Rheum_australe__Rheum_emodi  Asian herb (Himalayas)
  member:  genus_Rumex__Rumex  docks: coarse herbs and shrubs mainly native to north temperate regions
     member:  sour_grass__dock__sorrel  any of certain coarse weedy plants with long taproots, sometimes used as table greens or in folk medicine

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