Amethystea is a genus of plants in the family Lamiaceae, first described for modern science by Linnaeus in 1753.
It has only one known species, Amethystea caerulea, commonly known as blue amethystea.
[2] It is native to China, Japan, Korea, Central Asia (Tibet, Xinjiang, Kazakhstan, Tajikistan, Kyrgyzstan), and parts of Russia (Altai, Chita, Irkutsk, Buryatiya, Primorye).
[1][3][4][5]