#calamus  the aromatic root of the sweet flag used medicinally
  supertype:  root  the usually underground organ that lacks buds or leaves or nodes; absorbs water and mineral salts; usually it anchors the plant to the ground
  part of:  sweet_flag__sweetflag__calamus__sweet_calamus__sweetcalamu__myrtle_flag__flagroot__Acorus_calamus  perennial marsh plant having swordlike leaves and aromatic roots

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