"Curly mint" refers to several species of mint, peppermint different from the large leaves and the presence in the composition of the essential oil of large amounts of carvone . According to botanical classification, they belong to the species Mentha spicata, identical mean Mentha viridis L . (Regular spearmint) or species Mentha cardiaca Ger . (Scottish spearmint) . (Voitkevich)The plant owes its name spica form inflorescences . Plant height - about 90 centimeters, the flowers - purple . Unlike peppermint, mint in Kolosova not contain menthol .