竜胆

Etymology 1
From. Metathesis with rendaku of the expected character reading, from りうたん *riutan (> modern りゅうたん *ryūtan) to りんだう rindau (> modern りんどう rindō).

Noun

 * 1) a perennial herb of the family ,
 * 2)  any plant of the genus  or other closely related species: gentian
 * 1)  any plant of the genus  or other closely related species: gentian

Noun

 * 1)  rhizome of