#lettuce  leaves of any of various plants of Lactuca sativa
  supertype:  salad_green__saladgreen__salad_greens  greens suitable for eating uncooked as in salads
  subtype:  butterhead_lettuce  crisphead_lettuce  cos  loose-leaf_lettuce
  part of:  garden_lettuce__common_lettuce__Lactuca_sativa  annual or perennial garden plant having succulent leaves used in salads; widely grown

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