''Amethystea'' is a genus of plants in the family

Lamiaceae The Lamiaceae ( ) or Labiatae are a family (biology), family of flowering plants commonly known as the mint, deadnettle, or sage family. Many of the plants are aromatic in all parts and include widely used culinary herbs like basil (herb), ba ...

, first described for modern science by

Linnaeus Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné,#Blunt, Blunt (2004), p. 171. was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming o ...

in 1753. It has only one known species, ''Amethystea caerulea'', commonly known as blue amethystea. It is native to China, Japan, Korea,

Central Asia Central Asia is a region of Asia consisting of Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan. The countries as a group are also colloquially referred to as the "-stans" as all have names ending with the Persian language, Pers ...

(

Tibet Tibet (; ''Böd''; ), or Greater Tibet, is a region in the western part of East Asia, covering much of the Tibetan Plateau and spanning about . It is the homeland of the Tibetan people. Also resident on the plateau are other ethnic groups s ...

Xinjiang Xinjiang,; , SASM/GNC romanization, SASM/GNC: Chinese postal romanization, previously romanized as Sinkiang, officially the Xinjiang Uygur Autonomous Region (XUAR), is an Autonomous regions of China, autonomous region of the China, People' ...

, Kazakhstan, Tajikistan, Kyrgyzstan), and parts of Russia ( Altai, Chita,

Irkutsk Irkutsk ( ; rus, Иркутск, p=ɪrˈkutsk; Buryat language, Buryat and , ''Erhüü'', ) is the largest city and administrative center of Irkutsk Oblast, Russia. With a population of 587,891 Irkutsk is the List of cities and towns in Russ ...

Buryatiya Buryatia, officially the Republic of Buryatia, is a republic of Russia located in the Russian Far East. Formerly part of the Siberian Federal District, it has been administered as part of the Far Eastern Federal District since 2018. To its north ...

Primorye Primorsky Krai, informally known as Primorye, is a federal subject (a krai) of Russia, part of the Far Eastern Federal District in the Russian Far East. The city of Vladivostok on the southern coast of the krai is its administrative center, an ...

).Kew World Checklist of Selected Plant Families
/ref>Flora of China Vol. 17 Page 55, 水棘针 shui ji zhen, ''Amethystea caerulea'' Linnaeus, Sp. Pl. 1: 21. 1753.
/ref>

References

{{Taxonbar, from1=Q3752772, from2=Q15341827, from3=Q11130015 Lamiaceae Monotypic Lamiaceae genera Flora of China Flora of Japan Flora of Kazakhstan Flora of Korea Flora of Kyrgyzstan Flora of Russia Flora of Tajikistan Taxa named by Carl Linnaeus