1973 Soviet postage stamp featuring an illustration of Mountain Arnica flowers. Mountain arnica is a poisonous plant, but it has been used in herbal medicines. Extracts of mountain arnica have been studied for their effectiveness in topical medications to treat pain, swelling, and bruising.
“Mountain Arnica (Arnica Montana) Postage Stamp, Soviet Union,” 1973. Witco Stamp Collection, Box 5. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/vf851h9.
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