green dragon vs jimsonweed

green dragon

noun
  • Any of several plants in the family Araceae, including the North American species Arisaema dracontium and the Asian genus Pinellia. 

  • A tincture of cannabis, typically made by soaking the flowers, leaves, or stems in ethyl alcohol. 

  • Used other than figuratively or idiomatically: see green, dragon. 

jimsonweed

noun
  • A poisonous plant of the Datura stramonium species, part of the nightshade (Solanaceae) family. A hallucinogen occasionally ingested by those looking for a cheap high. 

  • Any poisonous plant of the genus Datura. 

How often have the words green dragon and jimsonweed occurred in a corpus of books? (source: Google Ngram Viewer )