ramsons vs wild garlic

ramsons

noun

  • A wild relative of chives, Allium ursinum, having edible leaves and roots. 

wild garlic

noun

  • ramsons (Allium ursinum) 

  • Allium vineale 

  • Allium canadense 

How often have the words ramsons and wild garlic occurred in a corpus of books? (source: Google Ngram Viewer )