Painkiller or pleasure? First conclusive evidence found for intentional use of black henbane in the Roman world
However, these seeds were not singed in any way ... deliberately collected and used the poisonous seeds of the black henbane ...
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Bone Stuffed With Henbane First Solid Evidence of The Plant's Use as a Drug
Deliberately hollowed out and plugged with birch tar, the bone – originally from a sheep or goat – was found to contain a large number of seeds of a plant called black henbane (Hyoscyamus niger).