a tropical tree of the Americas with poisonous apple-like fruits that cause phytophotodermatitis. It is one of the most poisonous trees in the world (the Spanish name for the tree translates to "the little apple of death"), however the trees grow along coasts thereby providing excellent erosion control. They are listed as an endangered species in Florida.
It is not permitted to fall asleep, either in the shadow of a manchineel tree, nor in the shadow of an army.
Victor Hugo. Les Misérables
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once he has made his way through a hedge of giant aloes or manchineels, inhabitants who (sometimes indeed among the ruins of a Roman theatre and beneath a column dedicated to Venus) are engaged in reading Mérope or Alzire.
Marcel Proust. In Search of Lost Time [volume 3]
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Then the presence of the doctor transported him. He displayed his erudition, cited pell-mell cantharides, upas, the manchineel, vipers.