Styphnolobium japonicum

Styphnolobium japonicum (L.) Schott is a dye plant.

Colors
It yields a yellow colour.

The tree contains five main flavonoids: rutin, quercetin, isorhamnetin, genistein and kaempferol.

Parts used
Colorants are extracted from the flowers, and it's preferred to get the buds before they open.

Synonyms
Sophora japonica L. In japanese the colour made by this plant is called enju.