Poisonous House Plants - Dumbcane Poisonous House Plants Common names Dumbcane, Giant Dumbcane, Spotted Dumbcane, Leopard Lily Botanical name Dieffenbachia sp. The distinctive leaf pattern of the very popular Dieffenbachia sp. is seen in many homes. Painful and immediate swelling of the mouth and throat occurs after chewing on dumbcane.
Speech impediment can occur, sometimes lasting for several days.
This plant is useful for purifying our indoor air.