#onion_plant__onionplant__onion__Allium_cepa  bulbous plant having hollow leaves cultivated worldwide for its rounded edible bulb
  supertype:  alliaceous_plant  bulbous plants having a characteristic pungent onion odor
  part:  onion.bulb
  substance:  isothiocyanate
  subtype:  eschalot__shallot__multiplier_onion__Allium_cepa_aggregatum__Allium_ascalonicum  type of onion plant producing small clustered mild-flavored bulbs used as seasoning
  subtype:  tree_onion__Egyptian_onion__top_onion__toponion__Allium_cepa_viviparum  type of perennial onion grown chiefly as a curiosity or for early salad onions; having bulbils that replace the flowers
  subtype:  Welsh_onion__Japanese_leek__Allium_fistulosum  Asiatic onion with slender bulbs; used as early green onions
  subtype:  red-skinned_onion__redskinnedonion__Allium_haematochiton  onion with white to deep red tunic; California

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