Ouren (Goldthread) - left (297 L)
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| Museum number | 297 |
|---|---|
| Uemura number / title | ; "Haze-some 25" |
| Folder location | 4th shelf |
| Sample location | left (297 L) |
| Fiber type | silk |
| Color | yellow (slightly blue tone) |
| Dyestuff (Japanese common name) | 黄蓮 : Ouren |
| Dye (English common name) | Goldthread |
| Dyestuff (botanical name) | Coptis japonica (Thunb.) Makino var. anemonifolia (Siebold et Zucc.) H.Ohba |
| Plant part | root / dried (?) |
| Dyestuff extraction | boiled in water |
| Auxiliary agent in dye bath | - |
| Mordant | copper |
| Other auxiliary agent | - |
| Uemura's notes | The resultant color was less red but more blue than any other ones treated with different kinds of mordant. |
| Uemura's date | Kyoto |