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USA: Special Tax Stamp issued by the United States Internal Revenue for physicians licensed to dispense opium, New York, 1933

USA: Special Tax Stamp issued by the United States Internal Revenue for physicians licensed to dispense opium, New York, 1933

Opium poppy, Papaver somniferum, is the species of plant from which opium and poppy seeds are extracted. Opium is the source of many opiates, including morphine, thebaine, codeine, papaverine, and noscapine.

The Latin botanical name means the 'sleep-bringing poppy', referring to the sedative properties of some of these opiates.