nettle-leaved horsemint vs spotted bee balm

nettle-leaved horsemint

noun
  • An aromatic herb of the western US in the mint family, Agastache urticifolia, used medicinally by the American Indians. 

spotted bee balm

noun
  • Monarda fruticulosa 

  • Monarda punctata, found in Quebec, Ontario, eastern and south-central United States, California, and northeastern Mexico. 

How often have the words nettle-leaved horsemint and spotted bee balm occurred in a corpus of books? (source: Google Ngram Viewer )