 Thereupon the “Indian immediately chaw'd some of this Contra Yerva, and put it into the wound, and it healed.”

Carolus Clusius described the root twice in his "Exoticorum libri decem" (1605), without making a link between the two.First he describes it as the "Drakena radix" and later on, in a translation from a Spanish work by Monardus or Nicolás Monardes, as contrayerva, 

The English herbalist Thomas Johnson linked the two roots (1633)