DR. NICK KURZENKO / SCIENCE PHOTO LIBRARY DR. NICK KURZENKO / SCIENCE PHOTO LIBRARY
Monkshood flowers (Aconitum axilliflorum). This plant, also known as aconite, is a medicinal plant that is used as a sedative or as a painkiller (analgesic). It is also poisonous, being able to cause paralysis and even death. Photographed in Russia.
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