Dieffenbachia(redirected from Diefenbachia)
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Related to Diefenbachia: House plants
a genus of the plant family Araceae; contains insoluble raphide oxalate crystals, and possibly other toxins, which cause severe irritation of the oral mucosa, especially swelling of the tongue. Includes D. maculata, D. picta, D. seguinae. Called also dumbcane.