[Kratylos]

It is not "δυόσμος" .
It is "basilika" (βασιλικός).

St. Constantine and Helen discovered the Holy Cross on Golgotha in 326 AD, the place where Christ was crucified.
On the spot where the Cross was discovered, St. Helen had found a hitherto unknown flower of rare beauty and fragrance, which has been named "Βασιλικος", or Basil, meaning the flower of royalty. Note that the word “Vasiliko” means “of the King,” since the word “Basileus” in Greek means "King"; so, the plant Vasilikos, Basil, is tied to the Precious Cross of the King of Glory, our Lord Jesus Christ.