#sour_grass__dock__sorrel  any of certain coarse weedy plants with long taproots, sometimes used as table greens or in folk medicine
  supertype:  #herbaceous_plant__herb  a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
  member of:  #genus_Rumex
  subtype:  #sour_dock__garden_sorrel__Rumex_acetosa  European sorrel with large slightly acidic sagittate leaves grown throughout north temperate zone for salad and spring greens
  subtype:  #sheep_sorrel__sheepsorrel__sheep's_sorrel__sheep'ssorrel__Rumex_acetosella  small plant having pleasantly acid-tasting arrow-shaped leaves; common in dry places
  subtype:  #bitter_dock__broad-leaved_dock__yellow_dock__Rumex_obtusifolius  European dock with broad obtuse leaves and bitter rootstock common as a weed in North America
  subtype:  #garden_sorrel__French_sorrel__Rumex_scutatus  low perennial with small silvery-green ovate to hastate leaves

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