Itadori (Japanese knotweed) - right (318 R)

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Uemura 09-10-2009 318.jpg

Museum number 318
Uemura number / title ; "Haze-some 25"
Folder location 4th shelf
Sample location right (318 R)
Fiber type silk
Color light ochre
Dyestuff (Japanese common name) 虎杖 : Itadori
Dyestuff (English common name) Japanese knotweed
Dyestuff (botanical name) Fallopia japonica (Houtt.) Ronse Decr. var. japonica (Polygonum cuspidatum Siebold et Zucc.)
Plant part root / dried (?)
Dyestuff extraction boiled in water
Auxiliary agent in dye bath -
Mordant ash water
Other auxiliary agent -
Uemura's notes The concentration of the dye bath was lower than the previous experiment. The resultant colors became less red than those from the first experiment.
Uemura's date -