Persicaria tinctoria

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Persicaria tinctoria
Persicaria tinctoria bergianska.JPG
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Core eudicots
Order: Caryophyllales
Family: Polygonaceae
Genus: Persicaria
Species: P. tinctoria
Binomial name
Persicaria tinctoria
(Aiton) Spach 1841
Synonyms[1]
  • Polygonum tinctorium Aiton 1789
  • Ampelygonum tinctorium (Aiton) Steud.
  • Persicaria tinctoria (Aiton) H. Gross
  • Pogalis tinctoria (Aiton) Raf.

Persicaria tinctoria is a species of flowering plant in the buckwheat family. Common names include Chinese indigo and "Japanese indigo."[2][3] It is native to Eastern Europe and Asia.

The leaves were a source of indigo dye. It was already in use in the Western Zhou period (ca. 1045-771 B.C.), and was the most important blue dye in East Asia until the arrival of Indigofera from the south.

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