a lemon-scented evergreen mat-forming perennial. There has been a great deal of confusion over the plant's correct name and origin. Recent DNA analysis suggests that it is not a hybrid or cross, but a distinct species as it was first described in 1811. [...]
text from Wikipedia, licensed under Creative Commons - Attribution - Sharealike
I made a shift to creep on all fours, and shelter myself, by lying flat on my face, on the lee-side of a border of lemon-thyme, but so bruised from head to foot, that I could not go abroad in ten days.
Jonathan Swift. Gulliver's Travels Into Several Remote Regions of the World (1726)