henbane

noun2

1. •
   Any member of the species Hyoscyamus niger of poisonous plants, used sometimes as a drug that causes at least hallucinations, dilated pupils, restlessness, and flushed skin.

   • Deadly nightshade, henbane, hellebore and mandrakes were of evil reputation[.] — 1936
2. •
   Any other plant of the genus Hyoscyamus.